I have a bike with the TruVativ SS crank/outboard bearing setup and it feels like I'm pedaling through mud all the time. I checked the free spin on the cranks and it seems to be dragging, (parasitic drag) and I was wondering if this is common or if it needs a breaking in period, or what.
That said, the old Cooks Bros. cranks and UN-73 BB combo is pretty awesome, and the old Race Face square taper with UN-73 is just as good. Yes, they are hard to find cranks, but they work great.
Modern equivilent would be the White Brothers ENO set up.
We just set another Surly KM up with that crankset an it spins great. We use a lot of RF and Truvativ product at the shop and the only time we have run in to any kind of drag or binding issues were when the customer spaced the bb wrong or the bb not being faced properly.
I sold that XXIX to a friend. Partially because he really wanted a 29"er SS. Partially to fund my wife's Christmas gift and to get a couple goodies for te Haro Mary XC.
Before I sent it down the road, I took off the chain and spun the cranks. No where close to being free! There was some pretty significant drag in those bearings. I would try to spin the cranks and they would turn six maybe seven times before stopping. Not very good!
If I get into some outboard bearing cranks in the future, I may take you up on that offer, Ben. Thanks!
In fact, there is something bright and orange on the way, but it's not what you think it might be!
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.