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Hunt Bike Wheels 42 Limitless Gravel Disc
Hunt Bike Wheels 42 Limitless Gravel Disc
Hunt Bike Wheels 42 Limitless Gravel Disc
<h1>WIND TUNNEL TESTED</h1><i> Developed by Luisa Grappone, with years in the wind tunnel spent testing every last detail. We've left no stone unturned in designing this wheelset from the ground up to be very fastest in the world within its class.</i>
<h1>Wind tunnel proven</h1><i>Proven to offer the lowest aerodynamic drag among tested gravel-specific wheelsets under 50mm depth, offering the rider up to .12 Watt savings over renowned competitors, and 16.8 Watt savings over non-aero gravel wheels</i>
<h1>Tyre Compatability</h1><i>Designed around a 24.5mm internal rim width optimized aerodynamically for 38-42c gravel tyres but will work with any tyre up to 54c. Also works excellently with clincher tyres and tubes. Naturally, as with all of our rims, they feature a hooked tyre retention design for safety, and are both fully ETRTO-compatible and tubeless-ready.</i>
<h1>Wing Spokes</h1><i>After considerable testing across multiple spoke types (including analysis against  competitor spokes), we found that the aerofoil profile of Pillar's Wing 20 spokes offer even further aerodynamic advantages over flat/bladed options.</i>
<h1>Patented Limitless Technology</h1><i>In order to create the most aerodynamic & stable shape for the tire, a rim bed of 24.5mm is needed. With the tire profile this creates, the ideal shape of the rim curves out to an external width of 36mm. To overcome the weight penalty associated with this, we use a (non-structural) low density expanding polymer insert, inside a channel carved out during pre-preg.</i>
<h1>Patented Limitless Technology</h1><i>This is bonded to the carbon during the curing process, resulting in an exceptionally strong bond. The density of carbon is 1.6g per cubic centimeter, whereas the polymer inserts weigh just 0.7g per cubic centimeter, resulting in a (rotational) mass loss of just over 50g per rim. This patented technology enables us to consider the limits of material properties, and smash right past them. </i>
<h1>CeramicSpeed Coated Bearings</h1><i>The 42 Limitless Gravel Disc will come fully equipped with CeramicSpeed's coated bearings are a further 75% tougher than their standard hardened steel races, and it's this enhanced strength that makes for a bearing solution that boasts an average lifetime 7.5 times longer than other non-coated solutions. CeramicSpeed’s coated bearing solutions are designed and tested extensively to ensure that failure due to corrosion is negligible.</i>
<h1>Freehub Body</h1><i>Featuring 3 multi-point pawls with 3 teeth each and a 48t ratchet ring. The result an impressively low 7.5 deg engagement angle. Durability is a theme for HUNT, and so all our freehub bodies have Steel Spline Insert re-enforcements to provide excellent durability against cassette sprocket damage often seen on standard alloy freehub bodies. Includes 2 CeramicSpeed bearings in the body.</i>
<h1>Nipples</h1><i>Despite designing a wheelset with aerodynamic supremacy in mind, serviceability and usability has always been a core philosophy of how we put wheels together. External spoke nipples are absolutely the right choice with this in mind, especially when running tubeless tires as you would have to remove the tubeless tape to access the nipples were, they to be internal.</i>
<h1>In the Box</h1><ul><li>HUNT Black Shield tubeless tape fitted to wheels.</li><li>The axle adapters needed for your bike, just fill in the simple form shown after order completion, the form is also included in your order confirmation page.</li><li>Cassette spacer for 8/9/10 speed</li><li>Tubeless Valves</li><li>HUNT spoke key for hex and square fitment</li><li>Pair 6 bolt disc adapters</li><li>Spare of each spoke plus nipples</li><li>Quality control card signed by your wheel builder</li></ul>
Hunt Bike Wheels 42 Limitless Gravel Disc
Hunt Bike Wheels 42 Limitless Gravel Disc
Hunt Bike Wheels 42 Limitless Gravel Disc
Hunt Bike Wheels 42 Limitless Gravel Disc
<h1>WIND TUNNEL TESTED</h1><i> Developed by Luisa Grappone, with years in the wind tunnel spent testing every last detail. We've left no stone unturned in designing this wheelset from the ground up to be very fastest in the world within its class.</i>
<h1>Wind tunnel proven</h1><i>Proven to offer the lowest aerodynamic drag among tested gravel-specific wheelsets under 50mm depth, offering the rider up to .12 Watt savings over renowned competitors, and 16.8 Watt savings over non-aero gravel wheels</i>
<h1>Tyre Compatability</h1><i>Designed around a 24.5mm internal rim width optimized aerodynamically for 38-42c gravel tyres but will work with any tyre up to 54c. Also works excellently with clincher tyres and tubes. Naturally, as with all of our rims, they feature a hooked tyre retention design for safety, and are both fully ETRTO-compatible and tubeless-ready.</i>
<h1>Wing Spokes</h1><i>After considerable testing across multiple spoke types (including analysis against  competitor spokes), we found that the aerofoil profile of Pillar's Wing 20 spokes offer even further aerodynamic advantages over flat/bladed options.</i>
<h1>Patented Limitless Technology</h1><i>In order to create the most aerodynamic & stable shape for the tire, a rim bed of 24.5mm is needed. With the tire profile this creates, the ideal shape of the rim curves out to an external width of 36mm. To overcome the weight penalty associated with this, we use a (non-structural) low density expanding polymer insert, inside a channel carved out during pre-preg.</i>
<h1>Patented Limitless Technology</h1><i>This is bonded to the carbon during the curing process, resulting in an exceptionally strong bond. The density of carbon is 1.6g per cubic centimeter, whereas the polymer inserts weigh just 0.7g per cubic centimeter, resulting in a (rotational) mass loss of just over 50g per rim. This patented technology enables us to consider the limits of material properties, and smash right past them. </i>
<h1>CeramicSpeed Coated Bearings</h1><i>The 42 Limitless Gravel Disc will come fully equipped with CeramicSpeed's coated bearings are a further 75% tougher than their standard hardened steel races, and it's this enhanced strength that makes for a bearing solution that boasts an average lifetime 7.5 times longer than other non-coated solutions. CeramicSpeed’s coated bearing solutions are designed and tested extensively to ensure that failure due to corrosion is negligible.</i>
<h1>Freehub Body</h1><i>Featuring 3 multi-point pawls with 3 teeth each and a 48t ratchet ring. The result an impressively low 7.5 deg engagement angle. Durability is a theme for HUNT, and so all our freehub bodies have Steel Spline Insert re-enforcements to provide excellent durability against cassette sprocket damage often seen on standard alloy freehub bodies. Includes 2 CeramicSpeed bearings in the body.</i>
<h1>Nipples</h1><i>Despite designing a wheelset with aerodynamic supremacy in mind, serviceability and usability has always been a core philosophy of how we put wheels together. External spoke nipples are absolutely the right choice with this in mind, especially when running tubeless tires as you would have to remove the tubeless tape to access the nipples were, they to be internal.</i>
<h1>In the Box</h1><ul><li>HUNT Black Shield tubeless tape fitted to wheels.</li><li>The axle adapters needed for your bike, just fill in the simple form shown after order completion, the form is also included in your order confirmation page.</li><li>Cassette spacer for 8/9/10 speed</li><li>Tubeless Valves</li><li>HUNT spoke key for hex and square fitment</li><li>Pair 6 bolt disc adapters</li><li>Spare of each spoke plus nipples</li><li>Quality control card signed by your wheel builder</li></ul>

HUNT 42 Limitless Gravel Disc Wheelset

42 Deep | 36 Wide | 1548g | CeramicSpeed

Aerodynamically optimised for maximum speed & crosswind stability

42 DEEP | 36 WIDE EXT | 25 WIDE INT | 1548G

The Purpose

With the 42 Limitless Gravel Disc, HUNT set out to develop the premier performance gravel wheelset, optimizing gravel-specific aerodynamics through patented Limitless technology, and balancing those against another critically important attribute for riders moving fast over inconsistent surfaces: crosswind stability (steering moment). The recent proliferation of gravel races across the globe means riders are now rethinking their equipment selections and employing aerodynamically designed skinsuits, helmets, frames and wheels.

With industry-leading engineering and design talent in-house, HUNT aims to set a new standard for gravel-specific wheel performance.

Key Features

  • Wind tunnel proven to offer the lowest aerodynamic drag among tested gravel-specific wheelsets under 50mm depth, offering the rider up to .12 Watt savings over renowned competitors, and 16.8 Watt savings over non-aero gravel wheels.
  • Rims | Designed by HUNT Product Engineering Manager, Luisa Grappone (MSc Aerospace Engineering), HUNT Limitless Technology delivers industry-leading cross wind stability verified by smooth steering moment data proven in wind tunnel testing. 25mm internal and 36mm external widths, and a 42mm u-shape profile.
  • Bearings | Featuring CeramicSpeed's new world-renowned low-friction Coated Bearings, designed for off road use. The leaders in low friction bearings, CeramicSpeed have again partnered with us on the hubs for the 42 Limitless Gravel Disc wheels. CeramicSpeed's new coated bearings are a further 75% tougher than their standard hardened steel races, and it's this enhanced strength that makes for a bearing solution that boasts an average lifetime 7.5 times longer than other non-coated solutions.
  • Tyres | Designed around a 25mm internal rim width optimised aerodynamically for 38-42c gravel tyres, these will work with any tyre up to 54c. Feature a hooked tyre retention design for safety, fully ETRTO-compliant and tubeless-ready. Work excellently with both clincher and tubeless-ready tyres.
  • FastEngage 7.5 Hubs |Β SPRINT straight-pull centre-lock hubs, boasting an engagement rate of just 7.5Β° owing to the leaf-sprung, multi-point pawls and 48 ratchets in the hub shell.
  • Elliptical Wing Spokes | Pillar Wing 20 spokes with aerofoil profile. Tested and proven to provide aerodynamic advantage over flat or bladed options both from Pillar and other competitors.
  • Axles | Easily adaptable & we fit them for you. Fit all current axle sizes and are easy to change; Front - QR, Bolt thru 12/9mm, Rear - QR, Bolt thru 12x142, 12x135, 10x135.
  • Included | Tubeless tape & valves, spare spokes, spoke key, axle adapters (please fill in the simple form after checkout to select your required size), pair of 6bolt disc adapters..
  • Weight | 1548g
  • H_CARE lifetime crash replacement included for first owners

Wind Tunnel Proven

The wind tunnel data we recorded in February 2020 and August 2020 is shown against the full range of world-class aero wheels. The results below depict HUNT's standing among the range (the 3T Discus 45|40 was not available to test, as it was not released to the public when testing occurred).
Further results are shown in the white paper attached; the 42 Limitless Gravel Disc wheelset offers riders the benefit of industry-leading aerodynamics ahead of industry incumbents but balanced against the clearly superior stability as measured above.

Full Wind tunnel results

Looking Beyond Drag

As a general rule, when comparing two aerodynamically profiled rims, deeper shapes will provide greater aerodynamic benefits. When studying equipment choices at premier gravel events, it was apparent that riders generally favoured shallower rims, presumably to achieve light weight, compliant ride characteristics and crosswind stability; all at the expense of substantive aerodynamic gains. The vibrational losses associated with deep rim profiles, along with the energy lost fighting hours of crosswinds, can cause fatigue over long racing distances. After testing a number of shapes and depths, HUNT identified the opportunity to develop the ideal solution: an extra-wide, aerodynamically optimised 42mm profile with outstanding crosswind performance and low relative weight.

Understanding Crosswind Stability

During testing, we monitor various elements of aerodynamic performance, including side forces that act on the rims, and the effect those forces have on the steering moment (a tool for measuring crosswind stability). As with our previous projects, our wheels are tested through a range of effective yaw angles between negative 20 degrees and positive 20 degrees.

In real world riding conditions, wind does not distribute forces evenly. The frequency of effective yaw angles experienced by a rider follows Gaussian distribution (bell curve), based on the variables of wind direction and speed, as well as rider direction and speed. Simply stated, low yaw angles have a greater probability of occurring in real world riding conditions than high yaw angles. According to well-referenced data from scientific and industry sources, "a vehicle will spend at least 70% of the time at yaw angles below 10 degrees." (Cooper, 2003). In the context of riding, the rider will spend approximately 42 minutes experiencing yaw angles between negative and positive 10 degrees over the course of an average one-hour ride.

In the chart below, the steering moment is tracked on the Y-axis, while the Yaw Angle is tracked on the X-axis. A flatter curve across the X-axis represents less impact on the rider's steering and stability. We are able to deduce from these results that the 42 Limitless Gravel Disc has the smoothest steering moment relative to the other wheels tested. Whether descending or going flat out on unsheltered roads, the rider will spend less energy fighting against crosswinds, leading to a faster, more comfortable, and more efficient ride.





Wind Tunnel Data

The wind tunnel results below depict the performance of HUNT 42 Limitless Gravel Disc wheels among a range of world class aero wheels commonly used in competitive gravel racing. The data suggests that the HUNT 42 Limitless Gravel Disc is the most aerodynamic gravel wheelset, offering the rider a small power gain of 0.05W, or 6 seconds of advantage when compared to the next best ranked offering over the course of a 200-mile race averaging a speed of 32 km/h and power output of 317W (Note: the 3T Discus 45|40 was not available to test, as it was not released to the public when testing occurred).

With the use of patented Limitless construction, HUNT was able to create a wheelset that offers an extremely wide rim profile with a truncated edge (blunted spoke bed) to help airflow remain attached to the system, while maintaining low overall weight and providing day-in and day-out performance and durability on the harshest gravel roads.

HUNT 42 Limitless Gravel Disc Schwalbe G-One Wind Tunnel Data

HUNT 42 Limitless Gravel Disc Teravail Cannonball Wind Tunnel Data

The wind tunnel data HUNT recorded is shown against the full range of reputable aero wheels in the chart below. The results below depict the performance of the 42 Limitless Gravel Disc wheelset among the range.

Using the aerodynamic force data from wind tunnel testing sessions, it is possible to calculate the average aerodynamic power to derive the time needed to cover a certain distance. In this case, the authors have calculated the time loss based on 200-mile race.

When it comes to quantifying performance, the use of Power (Watts) has become the norm, calculated in its simplest form, this is:

𝑃 = 𝐹𝑣 (1)
Where,
F = force acting against the forward motion
v = velocity of object

The Aerodynamic Force to overcome drag obtained from the wind tunnel being:
𝐹d = (p * cd * v2 * A) / (2)
p = density of fluid
Cd = coefficient of drag
A = reference Area (often frontal area)
However, the power required to maintain a rider’s speed is dependent on many other forces:
π‘‡π‘œπ‘‘π‘Žπ‘™ π‘ƒπ‘œπ‘€π‘’π‘Ÿ = 𝑃! (π‘‘π‘Ÿπ‘Žπ‘”) + 𝑃) (π‘Ÿπ‘œπ‘™π‘™π‘–π‘›π‘” π‘Ÿπ‘’π‘ π‘–π‘ π‘‘π‘Žπ‘›π‘π‘’) + 𝑃* (π‘“π‘Ÿπ‘–π‘π‘‘π‘–π‘œπ‘›) + 𝑃+ (π‘ π‘™π‘œπ‘π‘’) + 𝑃, (π‘Žπ‘π‘π‘’π‘™π‘’π‘Ÿπ‘Žπ‘‘π‘–π‘œπ‘›) (3)

This is now a complicated equation that is very dependent on the conditions and not possible to solve from wind tunnel data alone.

Calculation of Power and Time Loss
Hyp: a 32km/h (8.88 m/s in S.I. units) speed is considered and a professional rider producing an average power of 317W over the 200 mile (321 km in S.I. Units) Dirty Kanza Course.
Therefore, the propulsive force on the pedals is:
𝑃=317 π‘Š
𝐹= 𝑃𝑣= 3178.88=35.7𝑁 (1)
In terms of grams of force 1g = 0.00981 N, so:

36 𝑁=3638,96 𝑔
Assuming aerodynamic drag (Fd from wind tunnel results) as the only resistive force, the propulsive force (Ftot) to maintain the rider’s speed can be calculated using:

Ftot = Ξ”Fd + F (4)
The values of F and P are now known. Therefore, by manipulating equation (1) it is possible to calculate the time it would take to complete 321 km:

𝑃=𝐹 𝑣=πΉπ‘‘π‘œπ‘‘βˆ— 𝑠 / 𝑑

𝑑= (πΉπ‘‘π‘œπ‘‘βˆ—π‘ ) / 𝑃
Where s is the distance (m)



Read Less

The Purpose

With the 42 Limitless Gravel Disc, HUNT set out to develop the premier performance gravel wheelset, optimizing gravel-specific aerodynamics through patented Limitless technology, and balancing those against another critically important attribute for riders moving fast over inconsistent surfaces: crosswind stability (steering moment). The recent proliferation of gravel races across the globe means riders are now rethinking their equipment selections and employing aerodynamically designed skinsuits, helmets, frames and wheels.

With industry-leading engineering and design talent in-house, HUNT aims to set a new standard for gravel-specific wheel performance.

Key Features

  • Wind tunnel proven to offer the lowest aerodynamic drag among tested gravel-specific wheelsets under 50mm depth, offering the rider up to .12 Watt savings over renowned competitors, and 16.8 Watt savings over non-aero gravel wheels.
  • Rims | Designed by HUNT Product Engineering Manager, Luisa Grappone (MSc Aerospace Engineering), HUNT Limitless Technology delivers industry-leading cross wind stability verified by smooth steering moment data proven in wind tunnel testing. 25mm internal and 36mm external widths, and a 42mm u-shape profile.
  • Bearings | Featuring CeramicSpeed's world-renowned low-friction Coated Bearings, designed for off road use. These coated bearings are a further 75% tougher than their standard hardened steel races, and boast an average lifetime 7.5 times longer than other non-coated solutions.
  • Tyres | Designed around a 25mm internal rim width optimised aerodynamically for 38-42c gravel tyres, these will work with any tyre up to 54c. Feature a hooked tyre retention design for safety, fully ETRTO-compliant and tubeless-ready. Work excellently with both clincher and tubeless-ready tyres.
  • FastEngage 7.5 Hubs |Β SPRINT straight-pull centre-lock hubs, boasting an engagement rate of just 7.5Β° owing to the leaf-sprung, multi-point pawls and 48 ratchets in the hub shell.
  • Elliptical Wing Spokes | Pillar Wing 20 spokes with aerofoil profile. Tested and proven to provide aerodynamic advantage over flat or bladed options both from Pillar and other competitors.
  • Axles | Easily adaptable & we fit them for you. Fit all current axle sizes and are easy to change; Front - QR, Bolt thru 12/9mm, Rear - QR, Bolt thru 12x142, 12x135, 10x135.
  • Included | Tubeless tape & valves, spare spokes, spoke key, axle adapters (please fill in the simple form after checkout to select your required size), pair of 6bolt disc adapters..
  • Weight | 1548g
  • H_CARE lifetime crash replacement included for first owners


Wind Tunnel Proven

The wind tunnel data we recorded in February 2020 and August 2020 is shown against the full range of world-class aero wheels. The results below depict HUNT's standing among the range (the 3T Discus 45|40 was not available to test, as it was not released to the public when testing occurred).

Further results are shown in the white paper attached; the 42 Limitless Gravel Disc wheelset offers riders the benefit of industry-leading aerodynamics ahead of industry incumbents but balanced against the clearly superior stability as measured above.

Full Wind tunnel results

Looking Beyond Drag

As a general rule, when comparing two aerodynamically profiled rims, deeper shapes will provide greater aerodynamic benefits. When studying equipment choices at premier gravel events, it was apparent that riders generally favoured shallower rims, presumably to achieve light weight, compliant ride characteristics and crosswind stability; all at the expense of substantive aerodynamic gains. The vibrational losses associated with deep rim profiles, along with the energy lost fighting hours of crosswinds, can cause fatigue over long racing distances. After testing a number of shapes and depths, HUNT identified the opportunity to develop the ideal solution: an extra-wide, aerodynamically optimised 42mm profile with outstanding crosswind performance and low relative weight.

Understanding Crosswind Stability

During testing, we monitor various elements of aerodynamic performance, including side forces that act on the rims, and the effect those forces have on the steering moment (a tool for measuring crosswind stability). As with our previous projects, our wheels are tested through a range of effective yaw angles between negative 20 degrees and positive 20 degrees.

In real world riding conditions, wind does not distribute forces evenly. The frequency of effective yaw angles experienced by a rider follows Gaussian distribution (bell curve), based on the variables of wind direction and speed, as well as rider direction and speed. Simply stated, low yaw angles have a greater probability of occurring in real world riding conditions than high yaw angles. According to well-referenced data from scientific and industry sources, "a vehicle will spend at least 70% of the time at yaw angles below 10 degrees." (Cooper, 2003). In the context of riding, the rider will spend approximately 42 minutes experiencing yaw angles between negative and positive 10 degrees over the course of an average one-hour ride.

In the chart below, the steering moment is tracked on the Y-axis, while the Yaw Angle is tracked on the X-axis. A flatter curve across the X-axis represents less impact on the rider's steering and stability. We are able to deduce from these results that the 42 Limitless Gravel Disc has the smoothest steering moment relative to the other wheels tested. Whether descending or going flat out on unsheltered roads, the rider will spend less energy fighting against crosswinds, leading to a faster, more comfortable, and more efficient ride.




Wind Tunnel Data

The wind tunnel results below depict the performance of HUNT 42 Limitless Gravel Disc wheels among a range of world class aero wheels commonly used in competitive gravel racing. The data suggests that the HUNT 42 Limitless Gravel Disc is the most aerodynamic gravel wheelset, offering the rider a small power gain of 0.05W, or 6 seconds of advantage when compared to the next best ranked offering over the course of a 200-mile race averaging a speed of 32 km/h and power output of 317W (Note: the 3T Discus 45|40 was not available to test, as it was not released to the public when testing occurred).

With the use of patented Limitless construction, HUNT was able to create a wheelset that offers an extremely wide rim profile with a truncated edge (blunted spoke bed) to help airflow remain attached to the system, while maintaining low overall weight and providing day-in and day-out performance and durability on the harshest gravel roads.

HUNT 42 Limitless Gravel Disc Schwalbe G-One Wind Tunnel Data

HUNT 42 Limitless Gravel Disc Teravail Cannonball Wind Tunnel Data

The wind tunnel data HUNT recorded is shown against the full range of reputable aero wheels in the chart below. The results below depict the performance of the 42 Limitless Gravel Disc wheelset among the range.

Using the aerodynamic force data from wind tunnel testing sessions, it is possible to calculate the average aerodynamic power to derive the time needed to cover a certain distance. In this case, the authors have calculated the time loss based on 200-mile race.

When it comes to quantifying performance, the use of Power (Watts) has become the norm, calculated in its simplest form, this is:

𝑃 = 𝐹𝑣 (1)
Where,
F = force acting against the forward motion
v = velocity of object

The Aerodynamic Force to overcome drag obtained from the wind tunnel being:
𝐹d = (p * cd * v2 * A) / (2)
p = density of fluid
Cd = coefficient of drag
A = reference Area (often frontal area)
However, the power required to maintain a rider’s speed is dependent on many other forces:
π‘‡π‘œπ‘‘π‘Žπ‘™ π‘ƒπ‘œπ‘€π‘’π‘Ÿ = 𝑃! (π‘‘π‘Ÿπ‘Žπ‘”) + 𝑃) (π‘Ÿπ‘œπ‘™π‘™π‘–π‘›π‘” π‘Ÿπ‘’π‘ π‘–π‘ π‘‘π‘Žπ‘›π‘π‘’) + 𝑃* (π‘“π‘Ÿπ‘–π‘π‘‘π‘–π‘œπ‘›) + 𝑃+ (π‘ π‘™π‘œπ‘π‘’) + 𝑃, (π‘Žπ‘π‘π‘’π‘™π‘’π‘Ÿπ‘Žπ‘‘π‘–π‘œπ‘›) (3)

This is now a complicated equation that is very dependent on the conditions and not possible to solve from wind tunnel data alone.

Calculation of Power and Time Loss
Hyp: a 32km/h (8.88 m/s in S.I. units) speed is considered and a professional rider producing an average power of 317W over the 200 mile (321 km in S.I. Units) Dirty Kanza Course.
Therefore, the propulsive force on the pedals is:
𝑃=317 π‘Š
𝐹= 𝑃𝑣= 3178.88=35.7𝑁 (1)
In terms of grams of force 1g = 0.00981 N, so:

36 𝑁=3638,96 𝑔
Assuming aerodynamic drag (Fd from wind tunnel results) as the only resistive force, the propulsive force (Ftot) to maintain the rider’s speed can be calculated using:

Ftot = Ξ”Fd + F (4)
The values of F and P are now known. Therefore, by manipulating equation (1) it is possible to calculate the time it would take to complete 321 km:

𝑃=𝐹 𝑣=πΉπ‘‘π‘œπ‘‘βˆ— 𝑠 / 𝑑

𝑑= (πΉπ‘‘π‘œπ‘‘βˆ—π‘ ) / 𝑃
Where s is the distance (m)



Read Less

Full Specs

  • Rims

    • Wind tunnel tested, aerodynamically optimised for 38-42c tyres
    • 20 front and 24 rear interlaced
    • H-lock bead-seat up-kicks for easy and secure tubeless installation
    • Unidirectional T24/30 carbon fiber with 3K weave re-enforced spoke holes
    • 36mm outer and 24.5mm inner width
    • 42mm depth
    • Matt black base finished with matt white contrasting graphics
  • Spokes

    • Pillar Wing 20 with Aerofoil
    • 20 front and 24 rear interlaced
    • Aero Butted 2.0-2.2/0.95-2.0 then PSR section is 2.2
    • Straight-pull for excellent torsional strength and direct power transfer
    • Cold drawn from high grade T302 (18/10) stainless steel wire by Sandvik Sweden
    • Patented Pillar Spoke Re-enforcement, butted again just before the spoke head providing more durability in high stress area
    • Black stainless treatment
  • Nipples

    • Alloy square body for external adjustment and square head for easy internal adjustment/tensioning. square spoke key included
    • 16mm length with washer for a strong connection to the spoke added durability
    • 14 gauge
    • Black anodized finish
  • Tyres Info

    • Maximum tyre pressure for this rim is 45psi when used with 35-45mm tyres. Click here to listen to a podcast exploring the science of why lower pressures were found to be faster by pro teams.
    • Maximum tyre pressures for other tyre sizes: 30mm do not exceed 70psi, 33mm do not exceed 50psi, 35-45mm do not exceed 40psi, 45-50mm do not exceed 35psi.
    • Please do not exceed the maximum pressure stated on your tyre and follow all tyre manufacturer instructions.
    • Suitable for tyres from 30mm up to 50mm wide.
    • Suitable tubeless gravel tyres are available from a huge range of companies including Schwalbe, Hutchinson, Panaracer, Maxxis and many more.
  • Axle Size

    • These wheels are available with all existing disc brake road bike axle adapter sizes. All our axle adapters are easy to swap but we'll fit the adapters your bike needs to save you the work. After your order checkout is completed a simple form will show, as well as being sent to you in your confirmation email. The form allows you to select the axle size your bike needs, don't worry it also includes the option to tell us your bike model and we will find out and then fit the correct axles, plus we're happy to change them later at our cost if you don't quite get it right. Please note; this form is shown after you have completed your order. Please click on the Front Hub and Rear Hub tabs to see which sizes are available.
  • Front Hub

    • All existing road/CX disc front axle standards are available including:
      • Quick Release (skewers included)
      • 12mm Bolt Thru
    • All axle adapters are also available separately.
    • Forged and CNC’d 6061-T6 heat treated aluminium alloy body.
    • 7075-T6 aluminium alloy axles.
    • Centre-lock disc mount.Β 
    • Polished anodized black finish with laser graphics.
    • Hunt Race Season Disc straight-pull super-light alloy.
  • Rear Hub

    • We fit the axles you need, just complete the simple form shown after checkout - all existing road/CX disc rear axle standards are available including:
      • Quick Release (Quick release skewers included)
      • 12x142 Bolt Thru
      • 12x135 Bolt Thru (uncommon)
      • 10x135 Bolt Thru (uncommon)
    • All axle adapters are also available separately.
    • 7075-T6 heat-treated aluminium alloy freehub body.
    • Steel Spline Insert freehub body reinforcement provides excellent durability against cassette sprocket damage to the freehub often seen on standard alloy freehub bodies.
    • 3x treble-tooth individually leaf sprung pawls with 48 teeth on the ratchet ring for fast 7.5 degree engagement and instant acceleration.
    • All freehub standards accounted for, including:
      • Shimano/SRAM
      • Campagnolo
      • SRAM XD Driver
      • SRAM XDR Driver
    • Hunt Race Season Disc straight-pull super-light alloy.
    • Forged and CNC’d 6061-T6 heat treated aluminium alloy body.
    • 7075-T6 aluminium alloy axles.
    • Centre-lock disc mount. 6 bolt disc adaptors included.
    • Polished anodized black finish with laser graphics.
  • Bearings

    • Industry leading CeramicSpeed ceramic coated bearings.
    • 75% tougher than their standard hardened steel races, boasting an average lifetime seven and a half times longer than other non-coated solutions
    • CeramicSpeed bearing balls are of the highest quality, featuring the highest achievable surface finish and roundness
    • 6 year warranty
  • Warranty, HUNT Rolling Road Tests & Weight Limits

    H_CARE Logo

    As most of you will already know, we design our wheels to take a pretty impressive amount of hammering under all sorts of conditions. Whether you're hitting out at your local crit or road race, or taking the long way home on the paths less travelled, you can do so with the confidence that you're rolling on hoops designed to take the lot in their stride.

    Accordingly, we now offer free lifetime crash replacement for the first owners of these wheels.

    Read all about it here.

    A full 3 years from purchase date warranty is offered to the original purchaser only on all Hunt bike wheels against material or workmanshipΒ defects, please click here to read full details.

    All HUNT wheels models have to pass our harsh cobbled-rolling-road testsΒ for rider weight limits,Β please see here for more details.Β 115kgsΒ is the upper recommended rider weight limit for these wheels.Β PleaseΒ include the weight of any luggage in your total rider weight when choosing the correct wheels.Β If a rider is overΒ 90KgsΒ then an experienced bike mechanic should check the wheel regularly and it is advisable to useΒ tyres at max 90psiΒ as this will reduce the fatigue on the wheelset. We are cyclists ourselves and do of course go above and beyond to offer excellent service if you ever do experience any issues. We carry full spares at very reasonable prices and offer complete support.

    60 Day Ride & Return Period. We are certain you'll be impressed by the acceleration, low-weight, speed and durability of our wheels. We are cyclists and as such strive to offer class leading service and support. Buy with confidence, if for any reason you wish to return the wheels for a full refund of your order you can do so up to a full 60 days after you receive them whether they have been ridden or not. Please note we cannot offer refunds on wheels that have suffered from crash damage but do offer H_CARE (Free Lifetime Crash Replacement) on these wheels.

    Tubeless Tyre Options

    These are only some of the options you can have fitted on your wheels. To see the full range, click here

    We can supply or fit tubeless tyres (including sealant) to your wheels which are also designed to work excellently with clincher tyres and tubes. See recommended tyre options here.

    Maximum tyre pressure for this rim is 45psi when used with 35-45mm tyres. Maximum tyre pressures for other tyre sizes: 30mm do not exceed 70psi, 33mm do not exceed 50psi, 45-50mm do not exceed 40psi. 100psi is more than enough for any rider on road. Please do not exceed the maximum pressure stated on your tyre and follow all tyre manufacturer instructions. Click here to listen to a podcast exploring the science of why lower pressures were found to be faster by pro teams.

    Schwalbe G One Tubeless Tyres

    Schwalbe G-One Allround 700c (35/38mm) & 650B (1.5") Tubeless Gravel Tyres (pair)

    Schwalbe One goes gravel! The Schwalbe One family provides the perfect tyre for the latest gravel bike trend. The smooth rolling G-One profile and Tubeless Easy technology make it a pleasure to ride over forest paths and rolling fields.

    panaracer-gravel-king-sk-tyres-pair-fitted-to-your-hunt-wheels-with-sealant

    Panaracer GravelKing SK Plus Tubeless Gravel Tyres (pair)

    "Bring is on! The GravelKing SK Plus does it all! Low profile tread patterns means this King is quick and comfortable on and off road. The perfect tyre for those multi surface adventures

    Schwalbe G One Bite Tubeless Tyres

    Schwalbe G-One Bite 700c (38mm) and 650B (2.1") Tubeless Gravel Tyres - 30mm

    The G-One Bite feels good on road, but off-road is where it shows its real strength. The Bite version is made for more off-road use than its stablemates. The open tread and strong outer blocks give stability when cornering and great control in the toughest of gravel terrains

    In the Box

    Contents

    • HUNT Black Shield tubeless rim tape fitted to wheels.
    • The axle adapters needed for your bike, just fill in the simple form shown after order completion, the form is also included in your order confirmation page.
    • Cassette spacer for 8/9/10 speed
    • Tubeless Valves
    • HUNT spoke key for hex and square fitment
    • Pair 6 bolt disc adapters
    • Spare of each spoke plus nipples
    • Quality control card signed by your wheel builder

    Aerodynamically optimised for maximum speed & crosswind stability

    42 DEEP | 36 WIDE EXT | 25 WIDE INT | 1548G

    The Purpose

    With the 42 Limitless Gravel Disc, HUNT set out to develop the premier performance gravel wheelset, optimizing gravel-specific aerodynamics through patented Limitless technology, and balancing those against another critically important attribute for riders moving fast over inconsistent surfaces: crosswind stability (steering moment). The recent proliferation of gravel races across the globe means riders are now rethinking their equipment selections and employing aerodynamically designed skinsuits, helmets, frames and wheels.

    With industry-leading engineering and design talent in-house, HUNT aims to set a new standard for gravel-specific wheel performance.

    Key Features

    • Wind tunnel proven to offer the lowest aerodynamic drag among tested gravel-specific wheelsets under 50mm depth, offering the rider up to .12 Watt savings over renowned competitors, and 16.8 Watt savings over non-aero gravel wheels.
    • Rims | Designed by HUNT Product Engineering Manager, Luisa Grappone (MSc Aerospace Engineering), HUNT Limitless Technology delivers industry-leading cross wind stability verified by smooth steering moment data proven in wind tunnel testing. 25mm internal and 36mm external widths, and a 42mm u-shape profile.
    • Bearings | Featuring CeramicSpeed's new world-renowned low-friction Coated Bearings, designed for off road use. The leaders in low friction bearings, CeramicSpeed have again partnered with us on the hubs for the 42 Limitless Gravel Disc wheels. CeramicSpeed's new coated bearings are a further 75% tougher than their standard hardened steel races, and it's this enhanced strength that makes for a bearing solution that boasts an average lifetime 7.5 times longer than other non-coated solutions.
    • Tyres | Designed around a 25mm internal rim width optimised aerodynamically for 38-42c gravel tyres, these will work with any tyre up to 54c. Feature a hooked tyre retention design for safety, fully ETRTO-compliant and tubeless-ready. Work excellently with both clincher and tubeless-ready tyres.
    • FastEngage 7.5 Hubs |Β SPRINT straight-pull centre-lock hubs, boasting an engagement rate of just 7.5Β° owing to the leaf-sprung, multi-point pawls and 48 ratchets in the hub shell.
    • Elliptical Wing Spokes | Pillar Wing 20 spokes with aerofoil profile. Tested and proven to provide aerodynamic advantage over flat or bladed options both from Pillar and other competitors.
    • Axles | Easily adaptable & we fit them for you. Fit all current axle sizes and are easy to change; Front - QR, Bolt thru 12/9mm, Rear - QR, Bolt thru 12x142, 12x135, 10x135.
    • Included | Tubeless tape & valves, spare spokes, spoke key, axle adapters (please fill in the simple form after checkout to select your required size), pair of 6bolt disc adapters..
    • Weight | 1548g
    • H_CARE lifetime crash replacement included for first owners

    Wind Tunnel Proven

    The wind tunnel data we recorded in February 2020 and August 2020 is shown against the full range of world-class aero wheels. The results below depict HUNT's standing among the range (the 3T Discus 45|40 was not available to test, as it was not released to the public when testing occurred).
    Further results are shown in the white paper attached; the 42 Limitless Gravel Disc wheelset offers riders the benefit of industry-leading aerodynamics ahead of industry incumbents but balanced against the clearly superior stability as measured above.

    Full Wind tunnel results

    Looking Beyond Drag

    As a general rule, when comparing two aerodynamically profiled rims, deeper shapes will provide greater aerodynamic benefits. When studying equipment choices at premier gravel events, it was apparent that riders generally favoured shallower rims, presumably to achieve light weight, compliant ride characteristics and crosswind stability; all at the expense of substantive aerodynamic gains. The vibrational losses associated with deep rim profiles, along with the energy lost fighting hours of crosswinds, can cause fatigue over long racing distances. After testing a number of shapes and depths, HUNT identified the opportunity to develop the ideal solution: an extra-wide, aerodynamically optimised 42mm profile with outstanding crosswind performance and low relative weight.

    Understanding Crosswind Stability

    During testing, we monitor various elements of aerodynamic performance, including side forces that act on the rims, and the effect those forces have on the steering moment (a tool for measuring crosswind stability). As with our previous projects, our wheels are tested through a range of effective yaw angles between negative 20 degrees and positive 20 degrees.

    In real world riding conditions, wind does not distribute forces evenly. The frequency of effective yaw angles experienced by a rider follows Gaussian distribution (bell curve), based on the variables of wind direction and speed, as well as rider direction and speed. Simply stated, low yaw angles have a greater probability of occurring in real world riding conditions than high yaw angles. According to well-referenced data from scientific and industry sources, "a vehicle will spend at least 70% of the time at yaw angles below 10 degrees." (Cooper, 2003). In the context of riding, the rider will spend approximately 42 minutes experiencing yaw angles between negative and positive 10 degrees over the course of an average one-hour ride.

    In the chart below, the steering moment is tracked on the Y-axis, while the Yaw Angle is tracked on the X-axis. A flatter curve across the X-axis represents less impact on the rider's steering and stability. We are able to deduce from these results that the 42 Limitless Gravel Disc has the smoothest steering moment relative to the other wheels tested. Whether descending or going flat out on unsheltered roads, the rider will spend less energy fighting against crosswinds, leading to a faster, more comfortable, and more efficient ride.





    Wind Tunnel Data

    The wind tunnel results below depict the performance of HUNT 42 Limitless Gravel Disc wheels among a range of world class aero wheels commonly used in competitive gravel racing. The data suggests that the HUNT 42 Limitless Gravel Disc is the most aerodynamic gravel wheelset, offering the rider a small power gain of 0.05W, or 6 seconds of advantage when compared to the next best ranked offering over the course of a 200-mile race averaging a speed of 32 km/h and power output of 317W (Note: the 3T Discus 45|40 was not available to test, as it was not released to the public when testing occurred).

    With the use of patented Limitless construction, HUNT was able to create a wheelset that offers an extremely wide rim profile with a truncated edge (blunted spoke bed) to help airflow remain attached to the system, while maintaining low overall weight and providing day-in and day-out performance and durability on the harshest gravel roads.

    HUNT 42 Limitless Gravel Disc Schwalbe G-One Wind Tunnel Data

    HUNT 42 Limitless Gravel Disc Teravail Cannonball Wind Tunnel Data

    The wind tunnel data HUNT recorded is shown against the full range of reputable aero wheels in the chart below. The results below depict the performance of the 42 Limitless Gravel Disc wheelset among the range.

    Using the aerodynamic force data from wind tunnel testing sessions, it is possible to calculate the average aerodynamic power to derive the time needed to cover a certain distance. In this case, the authors have calculated the time loss based on 200-mile race.

    When it comes to quantifying performance, the use of Power (Watts) has become the norm, calculated in its simplest form, this is:

    𝑃 = 𝐹𝑣 (1)
    Where,
    F = force acting against the forward motion
    v = velocity of object

    The Aerodynamic Force to overcome drag obtained from the wind tunnel being:
    𝐹d = (p * cd * v2 * A) / (2)
    p = density of fluid
    Cd = coefficient of drag
    A = reference Area (often frontal area)
    However, the power required to maintain a rider’s speed is dependent on many other forces:
    π‘‡π‘œπ‘‘π‘Žπ‘™ π‘ƒπ‘œπ‘€π‘’π‘Ÿ = 𝑃! (π‘‘π‘Ÿπ‘Žπ‘”) + 𝑃) (π‘Ÿπ‘œπ‘™π‘™π‘–π‘›π‘” π‘Ÿπ‘’π‘ π‘–π‘ π‘‘π‘Žπ‘›π‘π‘’) + 𝑃* (π‘“π‘Ÿπ‘–π‘π‘‘π‘–π‘œπ‘›) + 𝑃+ (π‘ π‘™π‘œπ‘π‘’) + 𝑃, (π‘Žπ‘π‘π‘’π‘™π‘’π‘Ÿπ‘Žπ‘‘π‘–π‘œπ‘›) (3)

    This is now a complicated equation that is very dependent on the conditions and not possible to solve from wind tunnel data alone.

    Calculation of Power and Time Loss
    Hyp: a 32km/h (8.88 m/s in S.I. units) speed is considered and a professional rider producing an average power of 317W over the 200 mile (321 km in S.I. Units) Dirty Kanza Course.
    Therefore, the propulsive force on the pedals is:
    𝑃=317 π‘Š
    𝐹= 𝑃𝑣= 3178.88=35.7𝑁 (1)
    In terms of grams of force 1g = 0.00981 N, so:

    36 𝑁=3638,96 𝑔
    Assuming aerodynamic drag (Fd from wind tunnel results) as the only resistive force, the propulsive force (Ftot) to maintain the rider’s speed can be calculated using:

    Ftot = Ξ”Fd + F (4)
    The values of F and P are now known. Therefore, by manipulating equation (1) it is possible to calculate the time it would take to complete 321 km:

    𝑃=𝐹 𝑣=πΉπ‘‘π‘œπ‘‘βˆ— 𝑠 / 𝑑

    𝑑= (πΉπ‘‘π‘œπ‘‘βˆ—π‘ ) / 𝑃
    Where s is the distance (m)



    Read Less

    The Purpose

    With the 42 Limitless Gravel Disc, HUNT set out to develop the premier performance gravel wheelset, optimizing gravel-specific aerodynamics through patented Limitless technology, and balancing those against another critically important attribute for riders moving fast over inconsistent surfaces: crosswind stability (steering moment). The recent proliferation of gravel races across the globe means riders are now rethinking their equipment selections and employing aerodynamically designed skinsuits, helmets, frames and wheels.

    With industry-leading engineering and design talent in-house, HUNT aims to set a new standard for gravel-specific wheel performance.

    Key Features

    • Wind tunnel proven to offer the lowest aerodynamic drag among tested gravel-specific wheelsets under 50mm depth, offering the rider up to .12 Watt savings over renowned competitors, and 16.8 Watt savings over non-aero gravel wheels.
    • Rims | Designed by HUNT Product Engineering Manager, Luisa Grappone (MSc Aerospace Engineering), HUNT Limitless Technology delivers industry-leading cross wind stability verified by smooth steering moment data proven in wind tunnel testing. 25mm internal and 36mm external widths, and a 42mm u-shape profile.
    • Bearings | Featuring CeramicSpeed's world-renowned low-friction Coated Bearings, designed for off road use. These coated bearings are a further 75% tougher than their standard hardened steel races, and boast an average lifetime 7.5 times longer than other non-coated solutions.
    • Tyres | Designed around a 25mm internal rim width optimised aerodynamically for 38-42c gravel tyres, these will work with any tyre up to 54c. Feature a hooked tyre retention design for safety, fully ETRTO-compliant and tubeless-ready. Work excellently with both clincher and tubeless-ready tyres.
    • FastEngage 7.5 Hubs |Β SPRINT straight-pull centre-lock hubs, boasting an engagement rate of just 7.5Β° owing to the leaf-sprung, multi-point pawls and 48 ratchets in the hub shell.
    • Elliptical Wing Spokes | Pillar Wing 20 spokes with aerofoil profile. Tested and proven to provide aerodynamic advantage over flat or bladed options both from Pillar and other competitors.
    • Axles | Easily adaptable & we fit them for you. Fit all current axle sizes and are easy to change; Front - QR, Bolt thru 12/9mm, Rear - QR, Bolt thru 12x142, 12x135, 10x135.
    • Included | Tubeless tape & valves, spare spokes, spoke key, axle adapters (please fill in the simple form after checkout to select your required size), pair of 6bolt disc adapters..
    • Weight | 1548g
    • H_CARE lifetime crash replacement included for first owners


    Wind Tunnel Proven

    The wind tunnel data we recorded in February 2020 and August 2020 is shown against the full range of world-class aero wheels. The results below depict HUNT's standing among the range (the 3T Discus 45|40 was not available to test, as it was not released to the public when testing occurred).

    Further results are shown in the white paper attached; the 42 Limitless Gravel Disc wheelset offers riders the benefit of industry-leading aerodynamics ahead of industry incumbents but balanced against the clearly superior stability as measured above.

    Full Wind tunnel results

    Looking Beyond Drag

    As a general rule, when comparing two aerodynamically profiled rims, deeper shapes will provide greater aerodynamic benefits. When studying equipment choices at premier gravel events, it was apparent that riders generally favoured shallower rims, presumably to achieve light weight, compliant ride characteristics and crosswind stability; all at the expense of substantive aerodynamic gains. The vibrational losses associated with deep rim profiles, along with the energy lost fighting hours of crosswinds, can cause fatigue over long racing distances. After testing a number of shapes and depths, HUNT identified the opportunity to develop the ideal solution: an extra-wide, aerodynamically optimised 42mm profile with outstanding crosswind performance and low relative weight.

    Understanding Crosswind Stability

    During testing, we monitor various elements of aerodynamic performance, including side forces that act on the rims, and the effect those forces have on the steering moment (a tool for measuring crosswind stability). As with our previous projects, our wheels are tested through a range of effective yaw angles between negative 20 degrees and positive 20 degrees.

    In real world riding conditions, wind does not distribute forces evenly. The frequency of effective yaw angles experienced by a rider follows Gaussian distribution (bell curve), based on the variables of wind direction and speed, as well as rider direction and speed. Simply stated, low yaw angles have a greater probability of occurring in real world riding conditions than high yaw angles. According to well-referenced data from scientific and industry sources, "a vehicle will spend at least 70% of the time at yaw angles below 10 degrees." (Cooper, 2003). In the context of riding, the rider will spend approximately 42 minutes experiencing yaw angles between negative and positive 10 degrees over the course of an average one-hour ride.

    In the chart below, the steering moment is tracked on the Y-axis, while the Yaw Angle is tracked on the X-axis. A flatter curve across the X-axis represents less impact on the rider's steering and stability. We are able to deduce from these results that the 42 Limitless Gravel Disc has the smoothest steering moment relative to the other wheels tested. Whether descending or going flat out on unsheltered roads, the rider will spend less energy fighting against crosswinds, leading to a faster, more comfortable, and more efficient ride.




    Wind Tunnel Data

    The wind tunnel results below depict the performance of HUNT 42 Limitless Gravel Disc wheels among a range of world class aero wheels commonly used in competitive gravel racing. The data suggests that the HUNT 42 Limitless Gravel Disc is the most aerodynamic gravel wheelset, offering the rider a small power gain of 0.05W, or 6 seconds of advantage when compared to the next best ranked offering over the course of a 200-mile race averaging a speed of 32 km/h and power output of 317W (Note: the 3T Discus 45|40 was not available to test, as it was not released to the public when testing occurred).

    With the use of patented Limitless construction, HUNT was able to create a wheelset that offers an extremely wide rim profile with a truncated edge (blunted spoke bed) to help airflow remain attached to the system, while maintaining low overall weight and providing day-in and day-out performance and durability on the harshest gravel roads.

    HUNT 42 Limitless Gravel Disc Schwalbe G-One Wind Tunnel Data

    HUNT 42 Limitless Gravel Disc Teravail Cannonball Wind Tunnel Data

    The wind tunnel data HUNT recorded is shown against the full range of reputable aero wheels in the chart below. The results below depict the performance of the 42 Limitless Gravel Disc wheelset among the range.

    Using the aerodynamic force data from wind tunnel testing sessions, it is possible to calculate the average aerodynamic power to derive the time needed to cover a certain distance. In this case, the authors have calculated the time loss based on 200-mile race.

    When it comes to quantifying performance, the use of Power (Watts) has become the norm, calculated in its simplest form, this is:

    𝑃 = 𝐹𝑣 (1)
    Where,
    F = force acting against the forward motion
    v = velocity of object

    The Aerodynamic Force to overcome drag obtained from the wind tunnel being:
    𝐹d = (p * cd * v2 * A) / (2)
    p = density of fluid
    Cd = coefficient of drag
    A = reference Area (often frontal area)
    However, the power required to maintain a rider’s speed is dependent on many other forces:
    π‘‡π‘œπ‘‘π‘Žπ‘™ π‘ƒπ‘œπ‘€π‘’π‘Ÿ = 𝑃! (π‘‘π‘Ÿπ‘Žπ‘”) + 𝑃) (π‘Ÿπ‘œπ‘™π‘™π‘–π‘›π‘” π‘Ÿπ‘’π‘ π‘–π‘ π‘‘π‘Žπ‘›π‘π‘’) + 𝑃* (π‘“π‘Ÿπ‘–π‘π‘‘π‘–π‘œπ‘›) + 𝑃+ (π‘ π‘™π‘œπ‘π‘’) + 𝑃, (π‘Žπ‘π‘π‘’π‘™π‘’π‘Ÿπ‘Žπ‘‘π‘–π‘œπ‘›) (3)

    This is now a complicated equation that is very dependent on the conditions and not possible to solve from wind tunnel data alone.

    Calculation of Power and Time Loss
    Hyp: a 32km/h (8.88 m/s in S.I. units) speed is considered and a professional rider producing an average power of 317W over the 200 mile (321 km in S.I. Units) Dirty Kanza Course.
    Therefore, the propulsive force on the pedals is:
    𝑃=317 π‘Š
    𝐹= 𝑃𝑣= 3178.88=35.7𝑁 (1)
    In terms of grams of force 1g = 0.00981 N, so:

    36 𝑁=3638,96 𝑔
    Assuming aerodynamic drag (Fd from wind tunnel results) as the only resistive force, the propulsive force (Ftot) to maintain the rider’s speed can be calculated using:

    Ftot = Ξ”Fd + F (4)
    The values of F and P are now known. Therefore, by manipulating equation (1) it is possible to calculate the time it would take to complete 321 km:

    𝑃=𝐹 𝑣=πΉπ‘‘π‘œπ‘‘βˆ— 𝑠 / 𝑑

    𝑑= (πΉπ‘‘π‘œπ‘‘βˆ—π‘ ) / 𝑃
    Where s is the distance (m)



    Read Less

    Full Specs

  • Rims

    • Wind tunnel tested, aerodynamically optimised for 38-42c tyres
    • 20 front and 24 rear interlaced
    • H-lock bead-seat up-kicks for easy and secure tubeless installation
    • Unidirectional T24/30 carbon fiber with 3K weave re-enforced spoke holes
    • 36mm outer and 24.5mm inner width
    • 42mm depth
    • Matt black base finished with matt white contrasting graphics
  • Spokes

    • Pillar Wing 20 with Aerofoil
    • 20 front and 24 rear interlaced
    • Aero Butted 2.0-2.2/0.95-2.0 then PSR section is 2.2
    • Straight-pull for excellent torsional strength and direct power transfer
    • Cold drawn from high grade T302 (18/10) stainless steel wire by Sandvik Sweden
    • Patented Pillar Spoke Re-enforcement, butted again just before the spoke head providing more durability in high stress area
    • Black stainless treatment
  • Nipples

    • Alloy square body for external adjustment and square head for easy internal adjustment/tensioning. square spoke key included
    • 16mm length with washer for a strong connection to the spoke added durability
    • 14 gauge
    • Black anodized finish
  • Tyres Info

    • Maximum tyre pressure for this rim is 45psi when used with 35-45mm tyres. Click here to listen to a podcast exploring the science of why lower pressures were found to be faster by pro teams.
    • Maximum tyre pressures for other tyre sizes: 30mm do not exceed 70psi, 33mm do not exceed 50psi, 35-45mm do not exceed 40psi, 45-50mm do not exceed 35psi.
    • Please do not exceed the maximum pressure stated on your tyre and follow all tyre manufacturer instructions.
    • Suitable for tyres from 30mm up to 50mm wide.
    • Suitable tubeless gravel tyres are available from a huge range of companies including Schwalbe, Hutchinson, Panaracer, Maxxis and many more.
  • Axle Size

    • These wheels are available with all existing disc brake road bike axle adapter sizes. All our axle adapters are easy to swap but we'll fit the adapters your bike needs to save you the work. After your order checkout is completed a simple form will show, as well as being sent to you in your confirmation email. The form allows you to select the axle size your bike needs, don't worry it also includes the option to tell us your bike model and we will find out and then fit the correct axles, plus we're happy to change them later at our cost if you don't quite get it right. Please note; this form is shown after you have completed your order. Please click on the Front Hub and Rear Hub tabs to see which sizes are available.
  • Front Hub

    • All existing road/CX disc front axle standards are available including:
      • Quick Release (skewers included)
      • 12mm Bolt Thru
    • All axle adapters are also available separately.
    • Forged and CNC’d 6061-T6 heat treated aluminium alloy body.
    • 7075-T6 aluminium alloy axles.
    • Centre-lock disc mount.Β 
    • Polished anodized black finish with laser graphics.
    • Hunt Race Season Disc straight-pull super-light alloy.
  • Rear Hub

    • We fit the axles you need, just complete the simple form shown after checkout - all existing road/CX disc rear axle standards are available including:
      • Quick Release (Quick release skewers included)
      • 12x142 Bolt Thru
      • 12x135 Bolt Thru (uncommon)
      • 10x135 Bolt Thru (uncommon)
    • All axle adapters are also available separately.
    • 7075-T6 heat-treated aluminium alloy freehub body.
    • Steel Spline Insert freehub body reinforcement provides excellent durability against cassette sprocket damage to the freehub often seen on standard alloy freehub bodies.
    • 3x treble-tooth individually leaf sprung pawls with 48 teeth on the ratchet ring for fast 7.5 degree engagement and instant acceleration.
    • All freehub standards accounted for, including:
      • Shimano/SRAM
      • Campagnolo
      • SRAM XD Driver
      • SRAM XDR Driver
    • Hunt Race Season Disc straight-pull super-light alloy.
    • Forged and CNC’d 6061-T6 heat treated aluminium alloy body.
    • 7075-T6 aluminium alloy axles.
    • Centre-lock disc mount. 6 bolt disc adaptors included.
    • Polished anodized black finish with laser graphics.
  • Bearings

    • Industry leading CeramicSpeed ceramic coated bearings.
    • 75% tougher than their standard hardened steel races, boasting an average lifetime seven and a half times longer than other non-coated solutions
    • CeramicSpeed bearing balls are of the highest quality, featuring the highest achievable surface finish and roundness
    • 6 year warranty
  • Warranty, HUNT Rolling Road Tests & Weight Limits

    H_CARE Logo

    As most of you will already know, we design our wheels to take a pretty impressive amount of hammering under all sorts of conditions. Whether you're hitting out at your local crit or road race, or taking the long way home on the paths less travelled, you can do so with the confidence that you're rolling on hoops designed to take the lot in their stride.

    Accordingly, we now offer free lifetime crash replacement for the first owners of these wheels.

    Read all about it here.

    A full 3 years from purchase date warranty is offered to the original purchaser only on all Hunt bike wheels against material or workmanshipΒ defects, please click here to read full details.

    All HUNT wheels models have to pass our harsh cobbled-rolling-road testsΒ for rider weight limits,Β please see here for more details.Β 115kgsΒ is the upper recommended rider weight limit for these wheels.Β PleaseΒ include the weight of any luggage in your total rider weight when choosing the correct wheels.Β If a rider is overΒ 90KgsΒ then an experienced bike mechanic should check the wheel regularly and it is advisable to useΒ tyres at max 90psiΒ as this will reduce the fatigue on the wheelset. We are cyclists ourselves and do of course go above and beyond to offer excellent service if you ever do experience any issues. We carry full spares at very reasonable prices and offer complete support.

    60 Day Ride & Return Period. We are certain you'll be impressed by the acceleration, low-weight, speed and durability of our wheels. We are cyclists and as such strive to offer class leading service and support. Buy with confidence, if for any reason you wish to return the wheels for a full refund of your order you can do so up to a full 60 days after you receive them whether they have been ridden or not. Please note we cannot offer refunds on wheels that have suffered from crash damage but do offer H_CARE (Free Lifetime Crash Replacement) on these wheels.

    Tubeless Tyre Options

    These are only some of the options you can have fitted on your wheels. To see the full range, click here

    We can supply or fit tubeless tyres (including sealant) to your wheels which are also designed to work excellently with clincher tyres and tubes. See recommended tyre options here.

    Maximum tyre pressure for this rim is 45psi when used with 35-45mm tyres. Maximum tyre pressures for other tyre sizes: 30mm do not exceed 70psi, 33mm do not exceed 50psi, 45-50mm do not exceed 40psi. 100psi is more than enough for any rider on road. Please do not exceed the maximum pressure stated on your tyre and follow all tyre manufacturer instructions. Click here to listen to a podcast exploring the science of why lower pressures were found to be faster by pro teams.

    Schwalbe G One Tubeless Tyres

    Schwalbe G-One Allround 700c (35/38mm) & 650B (1.5") Tubeless Gravel Tyres (pair)

    Schwalbe One goes gravel! The Schwalbe One family provides the perfect tyre for the latest gravel bike trend. The smooth rolling G-One profile and Tubeless Easy technology make it a pleasure to ride over forest paths and rolling fields.

    panaracer-gravel-king-sk-tyres-pair-fitted-to-your-hunt-wheels-with-sealant

    Panaracer GravelKing SK Plus Tubeless Gravel Tyres (pair)

    "Bring is on! The GravelKing SK Plus does it all! Low profile tread patterns means this King is quick and comfortable on and off road. The perfect tyre for those multi surface adventures

    Schwalbe G One Bite Tubeless Tyres

    Schwalbe G-One Bite 700c (38mm) and 650B (2.1") Tubeless Gravel Tyres - 30mm

    The G-One Bite feels good on road, but off-road is where it shows its real strength. The Bite version is made for more off-road use than its stablemates. The open tread and strong outer blocks give stability when cornering and great control in the toughest of gravel terrains

    In the Box

    Contents

    • HUNT Black Shield tubeless rim tape fitted to wheels.
    • The axle adapters needed for your bike, just fill in the simple form shown after order completion, the form is also included in your order confirmation page.
    • Cassette spacer for 8/9/10 speed
    • Tubeless Valves
    • HUNT spoke key for hex and square fitment
    • Pair 6 bolt disc adapters
    • Spare of each spoke plus nipples
    • Quality control card signed by your wheel builder

    HUNT 42 Limitless Gravel Disc Wheelset

    42 Deep | 36 Wide | 1548g | CeramicSpeed

    Regular price Β£1,289.00 GBP

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    Subject to financial circumstances. You must be at least 18. Credit provided by Klarna Bank AB (publ), SveavΓ€gen 46, 111 34, Stockholm, Sweden. If you already have a Klarna Credit account, this purchase will be added to your balance. Not paying according to terms may cause your interest rate to increase as described in the representative example below.

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    Subject to financial circumstances. You must be at least 18. Credit provided by Klarna Bank AB (publ), SveavΓ€gen 46, 111 34, Stockholm, Sweden. If you already have a Klarna Credit account, this purchase will be added to your balance. Not paying according to terms may cause your interest rate to increase as described in the representative example below.

    Representative example: Representative APR (variable) 18.9% APR with an assumed credit limit of Β£1,200 and a purchase rate of 18.9% p.a.

    By continuing I accept the Klarna Services Terms, and confirm that I have read the Privacy Notice and the Cookie Notice

    Terms and Conditions

    Pre-Order Now. Shipping Jan Wk 2 Wheels are scheduled to ship from us in the week stated. Delivery time is 1 day*
    We will ask for axle info after checkout.

    FREE UK shipping on wheels
    Order by 3pm for Next Day delivery** (if shown in-stock)
    60 day ride & return period



    Please don't miss out, order now. Our wheels are in high demand due to their unique superior specifications and excellent reviews. Please be aware that we are working hard to meet demand. Unfortunately sales often outstrip supply, so please order now to avoid disappointment.

    *UK if shown in-stock, International orders 2-7 days. Please allow 3 working days for tyre fitting if required.

    HUNT 42 Limitless Gravel Disc Wheelset Β£1,289.00 GBP