DT Swiss has added a brand new 38mm depth rim to its ARC Dicut aero highway wheel vary. Previously obtainable in 50mm, 62mm and 80mm depths, it calls the brand new, shallower wheel the final word climbing wheel, with a claimed weight of 1,292 grams. That’s 180g lower than its next-lightest ARC 1100 Dicut 50.
DT says that it’s needed to hit the stability between aero and low weight. A shallow rim will weigh much less however be much less aero, whereas a deeper rim might be extra aero however heavier.
It settled on the 38mm depth, hooked bead rim because it’s nonetheless aero-efficient whereas permitting the load of the top-spec wheels to drop beneath 1,300g. The model needed to develop a brand new carbon lay-up to fulfill its design targets for the wheels and hit the load candy spot.
The new 38mm deep rims claimed to save lots of 180g when in comparison with the load of the 1100 Dicut 50 wheelset (Image credit score: DT Swiss)
At low yaw angles, DT Swiss’s testing exhibits that the brand new 38mm depth has near the aero efficiency of the deeper Dicut 50 wheels. It’s solely at greater yaw angles that there’s a number of watts distinction in drag, because of the sail impact performing on the deeper rims.
We took ten wheelsets to the Silverstone wind tunnel final yr, with the 62mm deep ARC 1100 Dicut wheels probably the most aero in our personal assessments.
DT has additionally examined its wheels in opposition to the competitors from the likes of Enve, Hunt, Lightweight and Fulcrum, concluding that the wheels with the bottom weights had the best drag, with the Dicut 38s popping out with the bottom weighted drag of the seven wheelsets examined. All wheels have been examined with a Continental GP5000S 25mm TR tyre, based on the hooked up press launch.
Hub choices, weights and pricing
The new rim is on the market on both DT Swiss 180 or 240 hubs (Image credit score: DT Swiss)
The new ARC 38 rim is on the market on two totally different hubs, the DT 180 hub, designated ARC 1100 Dicut 38 and priced at £2,499.98 / $2,999.80 / €2,499.80 and the DT 240 hub, designated ARC 1400 Dicut 38 and costing £1,864.98 / $2,399.80 / €2,049.80.
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Both the 180 and 240 Dicut hubs have a 36-tooth Ratchet EXP freehub and can be found with Shimano and SRAM XDR freehubs. There’s no Campagnolo choice.
The wheels differ within the hub shell design and the spokes used. While the claimed weight for the ARC 1100 Dicut 38 is 1,292g, for the ARC 1400 Dicut 38 wheels, weight will increase to 1,361g.
The new wheels have already seen motion underneath the Tudor Pro Cycling and Uno-X Mobility professional groups.
According to Tudor Pro Cycling’s Michael Storer, who used the brand new wheels on the 2024 Giro d’Italia: “The distinction in weight is instantly noticeable, particularly on the steep climbs such because the Mortirolo. I additionally really feel very steady and safe on the wheels which helped me trust on quick descents.”
