Praxis has been developing Turn cranks in order to offer OEM solutions for brands that want to spec their chainrings on production bikes. The cranks are all hollow cold forged in their own factory.
For mountain bikes, the cranks will be offered with a 30mm spindle or a massive 35mm spindle for ultimate stiffness. The 30mm option, like the road one, will fit in any BSA/BB30/PF30 frame. The 35mm crankset will only fit in BB30/PF30 frames.
Why 35mm? Praxis’ marketing director Adam Haverstock says it allows them to make the spindle from thinner walled alloy, which makes them stiffer for approximately the same overall weight. Combine that with the wider stance of their outboard bearing bottom bracket conversions and you get something massively stiff.
Check the comparison and plenty more below…
When the MTB cranksets launch, they’ll have new 2x chainrings to go with them. They wanted to introduce both at the same time because it allows them to control the chain line, and thus the shifting experience.
For road, they’ll be in the Force/Ultegra level, and at SLX/XT level in terms of weight, performance and price. Weights are still TBD, they just finished tooling and are finalizing production methods and such.
The road R-Series has a 30mm spindle designed around a 68mm BB shell, but it can be used with any frame. They use their own outboard bottom bracket to fit the larger spindle in a BSA 68 threaded frame. Or, you could use their outboard 30mm BB to fit it in a BB30 or PF30 frame. One crankset, most frames (not BBright or BB386. Yet.)
They’re doing a ton of testing this summer and should have final versions shown at the fall tradeshows.
For Campagnolo fans, they’ll have Ultra-Torque crankset conversion kits to run Campy cranksets on BB30/PF30 or Specialized OSBB 61mm bottom bracket shells. The silver clip spring is for bearing retention a la Campagnolo’s design.
One particularly cool bottom bracket they’ve had in their line for a while is the outboard BSA-to-BB30 model. Using external cups with oversized bearings and larger, 30mm ID, they let you run BB30/PFBB30 cranksets on any standard 68mm threaded BB frame.
