HUNT | MOUNTAIN

ALL-NEW TRAIL WIDE & ENDURO WIDE WHEELS

A new generation of wheels for the latest demands of trail riding and enduro racing

Lab Developed. Race Proven.

After almost three years of valiant service on local trails and EWS stages alike, with numerous awards and recognitions along the way, the restless design team at HUNT saw an opportunity to update the Trail and Enduro Wide wheelsets to meet the evolving demands of today’s riders.

By listening to customers and sponsored athletes, we set out with a clear understanding of the task ahead. Knowing front and rear wheels perform very different roles, we initially focused on the rear rim development of the Enduro wide. After a detailed review of rider feedback, we identified the potential benefit of creating a slightly narrower rear rim. With this change, the rider benefits from an improved tire profile with 2.3-2.5″ tires, as well as additional rim protection and the opportunity to redistribute the saved weight to further strengthening the profile.

Our vision was to improve the strength-to-weight ratio of the rim through rim profile optimization using new in-house testing equipment designed specifically for this project. The data gathered in our lab established the benchmarking for the damage analysis stage of the project, using two key criteria.

  • First damage energy – The amount of impact energy resulting in visible damage (dent) to the hook.
  • Failure damage energy – The amount of impact energy resulting in ride-ending rim damage.

The rim profile changes, when combined with new hubs and spoke configurations, resulted in all-new HUNT Trail Wide and Enduro Wide wheelsets that offer the rider similar system weights, but with significant improvements in impact resistance to denting.

Development Processes

Impact Testing
We recognized that the UCI impact tests, although key for ensuring safety standards, are not fully representative of the real-world impact performance of rims, which is of real benefit for riders when choosing a product. Our in-house testing equipment and protocol fills that gap and provides riders with the data they need to make the best decision for their riding.

Impacts experienced while riding are not often delivered uniformly or spread over the rim equally. In real-world riding conditions, rock strikes and impact forces are often transferred through a single side, at random incidence angles. To replicate these variables, the wheel is mounted at an angle in our lab equipment and impacted by a round-edged impactor on a single side of the rim (during development we tested a number of shapes to determine the most suitable).

The protocol for the test results described here ensures the isolation of rim profile performance data only, by controlling other variables such as tire, pressure, hub, and spokes used. The graph reflects two results for each rim; first the impact energy at which the initial equivalent sign of an impact is seen in the form of a visual ding, and the second being the energy at which a comparable ding would likely render a wheel unrideable.

*As impact energy levels increased, the damage was not isolated to rim dings but also compromised the integrity of the wheel with spoke de-tensioning and loss of trueness. For all wheels reaching160J, the damage to the overall wheel system was severe enough that as riders and engineers, our experience told us that these wheels would require mechanical attention beyond that of a ‘normal’ trailside repair.

FEA (Finite Element Analysis)
FEA is a numerical modelling method to visualize and analyze the structural behavior of components. When applied to rims, this enables us to perform simulations on the proposed profiles and under identical conditions compare stresses and deformations to the original.

We utilized the power of FEA to modify the material thickness distribution throughout the rim, focusing material in the key areas.

As pictured above, the new EW V2 (right) profile reduces the stresses transferred from the hook, to the tire-bed and rim sidewall, which means under the same load/impact the rim experiences less deformation (dinging).

Enduro Wide V2

 This is our all-out, hardest-hitting wheelset for your Enduro rig. Designed to take a beating on the most unforgiving trails, the Enduro Wide takes it all in stride.

27.5/29/Mullet | 33F/31R Wide Int. | 2041/2105g

Using the impact test protocol, the performance of the current Enduro Wide rim was assessed and validated against real-world impact damage. This highlighted some high-stress areas which could be strengthened with profile updates and by adding an internal support structure located to best dissipate energy.

From here initial concepts were sketched, focusing around a reduced 31mm internal width profile with an internal I-beam structure. FEA was utilised to confirm the high-stress areas in the original model and then to iteratively optimise material thickness distribution throughout the rim, focusing material in the key areas.

After seven consecutive design iterations, the final profile lovingly codenamed ‘Project Senduro’, was achieved.

TECH SPECS

  • Rims | 6069 T6 (490 MPa, + 69% Ultimate Tensile Strength over 6061-T6) welded construction, 33mm/31mm wide (internal), work-hardened shot-peened finish. Internal tubeless profile designed in conjunction with engineers at leading MTB tires brands for the best tubeless seal.
  • Spokes | 28F/32R Spoke Count, Triple Butted (2.2-1.6-2.0) PSR reinforced Pillar Spokes.
  • Hubs | Large body NDRO front hub and 5 degree RapidEngage rear hub, boost (110/148) and SuperBoost (157mm) spacing. Large double sealed cartridge bearings. Rock Shox Torque Caps for Boost hubs are available.
  • Axles | Extra thick 17mm 7075-T6 axles for increased strength and stiffness. Reducing flex in the hub also helps to increase bearing life.
  • Tires | Optimized for 2.35″-2.6″ tubeless tires, but also works very well with 2.25″-2.8″. Fully compatible with standard tires and tubes.
  • Included | Tubeless tape, valves and spokes.
  • Weights | 2041/2105g 27.5″/29″

Rims | Re-designed from the ground up so your wheels are the least of your worries as you focus on the stage ahead. Offering up mixed rim widths (33/31mm internal) to handle the different tasks front and rear wheels face.

Optimized for 2.35″-2.6″ tires, the EnduroWide rim provides support to the tire during hard cornering or hucking off that step-down you’ve been eyeing off for a few months!

Hubs | The demands of modern day Enduro riding are tougher than ever before, so the EnduroWide hubs have been designed with oversized 17mm axles to increase stiffness and bearing durability.

On the rear, the Hunt RapidEngage MTB hubs with a fast 5 degree engagement, means you will be able to put the power down straight out of the corners.

EnduroWide wheels will be available the first week of May 2021. Visit the EnduroWide webpage to get yours. 

MSRP: £399 / €509 / $549 USD

Trail Wide V2

The TrailWide is your go-to wheelset no matter the conditions. Optimized to still take the A-lines on the descents and not hold you back on the climbs.

27.5/29/Mullet | 30mm Wide Int. | 1761/1831G

Starting with what we learnt around profile optimisation from the burlier Enduro Wide project, we set out to improve upon its lighter sibling the Trail Wide, not an easy task with an Editor’s Choice-winning wheelset. Beyond simply taking the new Senduro rim and scaling it down to 30mm internal, we went back to the impact rig with its competitors.

Applying pinpointed design tweaks highlighted during the impact testing process, we optimized the material distribution for the desired strength-to-weight requirements. This trail-orientated profile produced a rim that visually appears the same as its predecessor, yet provides a 20% improvement in impact resistance.

TECH SPECS

  • Rims | 6069 T6 (490 MPa, + 69% Ultimate Tensile Strength over 6061-T6) welded construction, 30mm wide (internal), work-hardened shot-peened finish.
  • Spokes | 28h Spoke Count, Triple Butted (2.2-1.6-2.0) PSR reinforced Pillar Spokes.
  • Hubs | 5° RapidEngage, Boost (110/148 & 141QR), SuperBoost (157mm) or standard (100/142) spacing hubs available, large double sealed cartridge bearings. Rock Shox Torque Caps for Boost hubs and QR adapters for hubs are available.
  • Axles | 7075-T6 axles for strength and stiffness, reduced flex in the hub also helps to increase bearing life.
  • Tires | Optimized for 2.35″-2.6″ tubeless tires, but also works very well with 2.25″-2.8″. Fully compatible with standard tires and tubes.
  • Included | Tubeless tape, valve and spokes.
  • Weights | 1761/1831g 27.5″/29″

Rims | The TrailWide rim includes details that are high on the durability factor to make sure you finish every ride with a big grin.

Designed for 2.3″-2.5″ tires, the 30mm internal rim provides support to the tire when you drop into in a root strewn shoot or you’re throttling down a high-speed section and folding a tire is the last thing you need to happen!

Hubs | Suited to match the needs of the modern trail bike rider. The Trail Wide hubs have been chosen to increase stiffness, bearing durability, and overall strength of your wheelset.

On the rear, the RapidEngage MTB hubs with a fast 5 degree engagement, means you will be able to clear those janky tech climbs with ease.

TrailWide wheels will be available the first week of May 2021. Visit the TrailWide webpage to get yours. 

MSRP: £369 / €469 / $509 USD