Originally Posted by
Psimet2001
+1 - the PF30 setups I have worked with so far leave a lot to be desired, but I would be very interested in an expanding delrin collet style system. I am also a big fan of Enduro's angular contact cartridge bearing setup (retrofit all of my 38w cross system wheels with these for cross) in their bb30 system. It is a serviceable setup and angular contact. Capture the outer race in delrin and make it pf30.......you might have something
It will really come down to just how invasive any solution is. Repeated press be it BB30 or PF30 induces wear as you stated earlier. C-bear for example now offers press in captured bearings for PF30 which work much better than plastic bushings with BB30 bearings pressed in. But again, the issue here is abrasive wear during installation. One doesn't want to replace them repetitively...although wear to a virgin carbon shell should be managable and a break away epoxy could also be used which has low shear for removal. So there are many options moving forward. I believe the Praxis solution to be least invasive and most effective...on three levels:
1. It is through sleeve which connects both sides of the BB which is the most stable.
2. It expands radially to BB bores, not inducing wear.
3. Bearings are captured and won't move or shift and have great sealing.