38/TWENTYFOUR Clincher
38/TWENTYFOUR Clincher
Brake Performance
Specifically formulated to withstand the same heat our rims can take on, our brake pad compound is exclusive for TwentyFour Series wheelsets. Using a specially formulated rubber compound, durometer and friction agent, we developed a proprietary brake pad and reduced braking distances over that of other carbon fiber wheelsets.
"..the braking performance was virtually unchanged in transitions from dry to wet to monsoon left us all but astounded that these could be carbon brake track wheels, and yet they were. In this case, “impressed” is too light a word—we were floored." -Aerogeeks.com
Hub
TwentyFour Series hubs are forged from 6061-T6 Aluminum then precision machined with a tolerance of 100th of a millimeter increasing durability, strength and stiffness. The freehub body is machined from 7001-T6 Aluminum then shot peened hard anodized to create an 18% increase in material strength compared to standard aluminum freehubs. This prevents the cassette from digging into the freehub body resulting in better shift performance and increased power transfer.
Course Modelling
Wind tunnel tests can tell us how fast wheels are at different angles of attack – but how common are these angles in the courses most important to our athletes? Blindly applying tunnel data to the unpredictable force of Mother Nature did not add up to us. We took our tunnel data a step further, and worked with SpeedTheory to break down popular road and triathlon courses into thousands of segments, mapping the performance of our wheels against historical wind speeds, angles and race day conditions around the world. TwentyFour Series wheels continue to come out with distinct advantages across the yaws most commonly encountered not in a lab, but in the real world.
CFD Engineered Rim Profiles
We designed, tested and revised hundreds of rim shapes to find the very nuances that affect crosswind feedback and handling. Partnering with a team of technicians specializing in Computational Fluid Dynamics from golf equipment to race cars, we were able to merge their expansive CFD knowledge with our aerodynamic expertise. Manipulating width, width location, depth and conicity, we sorted through months of generated data to select the highest performing rim profiles.
Precision-Engineered Materials Every Step of the Way
Rather than use the consistently failing attempts at reducing the temperatures produced by braking, we rejected what has become acceptable practice and instead increased the heat capacity of our materials. Our proprietary high Tg point resin is 30% higher than other “high” Tg resins. A rim that can withstand more heat leads to braking performance unseen on other carbon rims.
Front
Front: 657g Rear: 808g Total: 1465g
220lbs
700c
125psi, 8.27 bar
38mm
24.5mm
17mm
UD Carbon
Stainless Steel
Straight Pull, Bladed
20
Radial
274mm
Black
7075 Alloy Polyax Double Square
Black
6061-T6 Alloy
699
Black
Rear:
808g
220lbs
700c
125psi, 8.27bar
38mm
24.5mm
17mm
UD Carbon
Stainless Steel
Straight Pull, Bladed
24
Radial/2 Cross
272mm/274mm
Black
7075 Alloy Polyax Double Square
Black
6061 T6 Alloy
6802
Black
Shimano/SRAM: 9/10sp, 11sp w/included spacer
Campagnolo: 10/11sp Freehub Available aftermarket
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"…rivaled the acceleration and overall performance of the lighter and significantly more expensive wheels." "On long descents, the quality of the braking was excellent. The pads weren't too grabby, and when a hard stop was required, the stopping distance was on par with an aluminum brake track." - Active.com |
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Featured 9/16/14 BICYCLING Magazine's Gear of the Day: “The TwentyFour series carbon clinchers are a light, aerodynamic wheel, with braking performance that is on par with wheelsets that are twice the price....they became my go-to, everyday wheelset.” |
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"Braking with the 38/TwentyFour wheels was solid and strong, while the modulation afforded by the included brake pads allowed me to gradually slow—or stop quickly—with confidence.” -Road Bike Action, July issue |
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"These wheels feel more planted to the ground more than any other carbon clincher I've ridden." -Road Bike Action, July issue |
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"Competitive weight, good braking, ‘fast’ to ride on, comes with everything you need to get going and all at a lower price – what’s not to like?" -BICYCLING Australia, September issue |
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"..the braking performance was virtually unchanged in transitions from dry to wet to monsoon left us all but astounded that these could be carbon brake track wheels, and yet they were. In this case, “impressed” is too light a word—we were floored." - AeroGeeks.com 'First Ride' |
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"Either Profile Design equipped these wheels with tiny motors or they’re naturally disconcertingly quick...We aren’t sure what mojo Profile Design has worked on the braking surface of the 24 Series, but we are reasonably certain that it involves black magic." - AeroGeeks.com 'Final Thoughts' |