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new Mavic E-Deemax S30 und S35-wheels – E-bike specific wheels with 180 kg clearance!

30.11.2020
by Rudolf Fischer

We would not like to swap places with an E-MTB wheel. The loads are enormous and the wheels must be able to withstand a lot. Mavic wants to prevent premature wear and tear and launches the new E-MTB specific E-Deemax S wheels with an incredible 180 kg trail clearance. To find out what this means exactly, read our news.

The bike industry has been dealing with stresses and strains on components since the first e-bike, causing manufacturers chronic headaches. The customer’s desire for ever greater weight clearance and a higher permissible total weight is becoming more acute. The wheel specialists at Mavic know the problem and want to meet the real-world needs of e-mountain bikers with the new Mavic E-Deemax S 30 and S35 wheels. The new aluminum wheelset is certified according to the ASTM 5 standard for e-bikes and has to withstand a further 12% higher load than a standard wheel with ASTM 5 certification under in-house test conditions. Expressed in measurable quantities, this means that the wheels are approved for a maximum system weight (rider + e-bike + equipment) of 180 kg. 180 kg alone would not be a reliable indicator of the load during the ride, but in combination with the ASTM 5 and the Bikepark approval, the new Mavic wheels promise to be among the most robust on the E-MTB market.

The new Mavic E-Deemax S30 and E-Deemax S35 wheels in detail

In addition to the high ASTM 5 certification for e-bikes on paper, the Mavic E-Deemax S30 and S35 wheels are characterized by increased wall thickness in particularly stressed areas. On the other hand, material was removed in places where the load peaks do not reach critical values. Mavic calls this technology Inter Spoke Milling (ISM for short), which thins out the wall thickness of the rim on the inside in the areas between each spoke hole. According to Mavic, this allows weight savings of up to 17%. In the case of the E-Deemax S wheels, this represents a 10% saving compared to unmachined rims. Another e-bike specific improvement is the increased flange diameter on the hub to withstand the increased loads from the motor. The new Mavic E-Deemax S wheels are of course compatible with tubeless tires. Thanks to the Fore-technology used by Mavic, a tubeless setup does not even require rim tape, according to Mavic. The spokes are screwed directly into the spoke holes from the outside, leaving the lower rim bridge intact. This is to make the rim more rigid and prevent material fatigue. Another advantage: If a spoke nipple has to be changed, no rim tape has to be removed from the rim. The rim has an additional and wider shoulder. According to Mavic, the increased contact area with the tire should reduce the risk of pinch-flats by 20%.

The spokes are directly screwed to the Mavic E-Deemax S30 rims.
The increased flange diameter should better withstand the increased loads from the engine.

The Mavic E-Deemax S will be available early next year for € 650 per wheelset, both in a version with a 6-hole mount for brake discs and a center-lock mount. The Mavic E-Deemax S30 wheel with 30 mm inner width will initially be available in 29″ only, the set will then weigh 2,070 g according to the manufacturer. The Mavic E-Deemax S35 wheelset with 35 mm inner width will only be available in 27.5″ and will weigh 2,030 g according to Mavic. The hubs comply with the Boost standard and will be available with SRAM XD freehub as well as with Shimano MICRO SPLINE and the old Shimano HG freehub.

Modern e-bikes are at home on tours as well as downhill tracks and appeal to a broad target group. The stress on the material is enormous, especially in connection with a high permissible total weight of the bike. The new Mavic E-Deemax S30 and S35 wheels do everything right on paper and could help bike manufacturers in the future to increase the total permissible weight of E-MTBs. Whether they will withstand the stresses and strains under real test conditions remains to be seen. With an attractive price of 650 € per wheelset we are confident that they will find their way to many E-MTBs.

For more information visit Mavic.com

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Words: Rudolf Fischer Photos: Mavic

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About the author

Rudolf Fischer

In his previous life Rudolf was a dab hand at promoting innovation, putting his brain behind big-ticket patent assessments that easily ran into six-or-seven-plus figures. These days, the self-confessed data nerd’s role as editor at DOWNTOWN and E-MOUNTAINBIKE is no less exciting. Given his specialism in connectivity, Rudolf’s often placed on the front line of future mobility conversations, but he’s also big into testing new bikes–both on the daily as a committed commuter and intensively for our group tests. The business economist graduate is as versatile as a Swiss penknife, and that’s no hyperbole. Away from two wheels, his background in parkour means he’s a master of front, side and backflips, plus he speaks German, English, French, Russian and a touch of Esperanto. Japanese remains woefully unmastered, despite his best home-learning attempts. Good to know: Rudolf’s sharp tongue has made him a figure of fear in the office, where he’s got a reputation for flexing a dry wittiness à la Ricky Gervais... interestingly, he's usually the one laughing hardest.