Hello all,
I’m not sure if this is normal or not, but when I backpedal the cranks, there seems to be a little bit of resistance and it doesn’t spin hardly at all compared to my trail bikes. This is the first downhill bike we have owned.
Is there some sort of preload adjustment for the Shimano Saint drivetrain?
Saint cranks won’t spin freely
byu/randomipadtempacct inbikewrench
by randomipadtempacct
6 Comments
That doesn’t seem right to me they should move with little to no issue
Take the chain off the chainring and test it again, but it seems like your bottom bracket is most likely seized and needs replaced
You can reduce the preload by loosening the pinch bolts on the crank then loosening the gold preload bolt a bit and re tighten the crank pinch bolts.
Also check if your crank spacer is missing, there should be a small spacer/ring on the non drive side between the BB and crank arm.
If you correctly adjusted your preload but it still doesn’t spin freely it is likely the BB shell is not faced properly causing the BB to be not aligned binding up the spindle. But it’s likely just over preloaded.
Is it a fresh build? Loosen the crank arm fixing bolt.
There’s far too many unseen possibilities here. Is it actually in gear? Or has the chain moved to a different cog in the back? Is it a fresh build? Is the cassette installed correctly? Is the BB installed with the correct spacers? Does it behave the same without a chain?
Maybe a 74mm BB and you put the Spacers for 68mm?