Wobbly race face cranks
First the good news, Shimano, Middleburn and FSA cranks fit Race Face Bottom brackets.
If you’re lucky it’s just the spacer that needs replacing (for about £5) and it’ll be fine.
If you’re not then it’ll be worn splines, however is the spacer is missing then the chances are that the cranks will wobble anyway.Posted 6 years agoJImmAwelonMember
There is this little bikeshop just over the Irish Sea from me:
I think it does mail order. I don’t know what the different colours mean though.Posted 6 years ago
I think I already know the answer.. But recently I fitted a new bb to some deus cranks. In doing this a rubber washer/ o ring thing behind the crank disintegrated.
Now the cranks have a wobble even with the bolts done up monkey arm tight
Are the cranks knackered?
If so will any other non race face crank fit that bb?
Is there a quick fix?
Thanks!Posted 6 years agoDiscJockeyMember
I think the idea of this design is that the 8mm bolt tightens up against the axle, thus pushing the crank to exactly the right position to get correct bearing pre-load. This seems odd compared to other systems where you’re always tightening against the crank, and therefore have to be careful not to over tighten. So with RF cranks done up very tight, if you don’t have the correct amount spacers and a well faced BB shell, you will crush the bearings or not apply the correct load, i.e. tightening up more doesn’t keep pushing the crank arm inwards. Grinding a few mm off the axle might work, but you’d need to remove chainline spacers to compensate otherwise you’ll crush the bearings.
My Atlas crank did come loose the other day, simply because I’d not tightened the 8mm bolt after refitting it. I only noticed after an hour of hammering up and down Jacob’s Ladder, so I expected the worst. However, once back home, I completely degreased the axle and bolt threads and all splines, dried it all, refitted it with loads of loctite and did up the 8mm bolt with a huge amount of torque (it’s all steel, so won’t break). It’s been OK since then, so I think I may have saved it all. If this fails, I will resort to grinding back the axle a bit.Posted 6 years agokaesaeMember
Hey, I run a diabolus crank that I bought for £10 on feebay, it had damaged splines, I have simply installed two small grub screws via helicoils and thread locked them and the end cap that comes loose, they seem to be working fine!
I think it would work for most xtype raceface cranks!Posted 6 years agonallen132Member
UK Bikestore list them but waiting for stockPosted 6 years ago
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