Road Bike, Cycling Forums banner
1 - 6 of 6 Posts

·
Registered
Joined
·
7 Posts
Discussion Starter · #1 ·
I just installed a new Truvativ Team SL ISIS Bottom Bracket. The bearings feel really tight. Is this normal for a new BB? Will they loosen up after a few miles? The cranks will not spin freely more than a half of turn.

Thanks
 

·
Carbon Fiber = Explode!
Joined
·
3,438 Posts
Well it's not like it's an adjustable BB... so you really have no choice, right?
 

·
Registered
Joined
·
21,666 Posts
Seal drag

yarsec said:
I just installed a new Truvativ Team SL ISIS Bottom Bracket. The bearings feel really tight. Is this normal for a new BB? Will they loosen up after a few miles? The cranks will not spin freely more than a half of turn.
These BBs have contact seals. If the BB turns smoothly with no gritty feelings or binding, then you are just experiencing seal drag, which will diminish with time.
 
1 - 6 of 6 Posts
Top