DT Swiss has added a brand new 38mm depth rim to its ARC Dicut aero highway wheel vary. Beforehand accessible 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 will likely 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 goals for the wheels and hit the load candy spot.
The brand new 38mm deep rims claimed to save lots of 180g when in comparison with the load of the 1100 Dicut 50 wheelset (Picture credit score: DT Swiss)
At low yaw angles, DT Swiss’s testing reveals 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 couple of watts distinction in drag, as a result of sail impact performing on the deeper rims.
We took ten wheelsets to the Silverstone wind tunnel final 12 months, 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, Light-weight and Fulcrum, concluding that the wheels with the bottom weights had the very best drag, with the Dicut 38s popping out with the bottom weighted drag of the seven wheelsets examined. All wheels had been examined with a Continental GP5000S 25mm TR tyre, based on the connected press launch.
Hub choices, weights and pricing
The brand new rim is out there on both DT Swiss 180 or 240 hubs (Picture credit score: DT Swiss)
The brand new ARC 38 rim is out there 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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Each the 180 and 240 Dicut hubs have a 36-tooth Ratchet EXP freehub and can be found with Shimano and SRAM XDR freehubs. There is no Campagnolo possibility.
The wheels differ within the hub shell design and the spokes used. Whereas 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 brand new wheels have already seen motion below the Tudor Professional Biking and Uno-X Mobility professional groups.
In accordance with Tudor Professional Biking’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 secure and safe on the wheels which helped me believe on quick descents.”
