Old cranks on new BB squeak
05-23-11, 04:07 PM
#1
Rhythm is rhythm
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Old cranks on new BB squeak
Shimano 600 cranks from 1988 on new Sugino square taper bb are making a lot of squeaking noise. It's not the bb cups. Any suggestions besides tightening the crank arm bolt as hard as I can?
05-23-11, 05:26 PM
#3
Your cog is slipping.
Greasing a square-taper spindle isn't always the best idea.
05-23-11, 05:50 PM
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05-23-11, 05:50 PM
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05-23-11, 06:07 PM
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Your cog is slipping.
08-09-11, 11:29 PM
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I'm having the same trouble. IT IS THE CRANK BOLTS. I tighten them down, they loosen up, I tighten them down, they loosen up...............
After I tighten them, no creaking.
I was thinking of going back to the bolts from the old BB. They're tightened with a 14mm socket. There was never any creaking with the old BB with these bolts.
The new BB, Interloc Racing, has 8mm hex key bolts with rubber seals. I have a suspicion that the rubber seals may have something to do with the loosening. Before I put the old bolts back on I'll remove the rubber seals on the new hex bolts and see if that solves the problem.
After I tighten them, no creaking.
I was thinking of going back to the bolts from the old BB. They're tightened with a 14mm socket. There was never any creaking with the old BB with these bolts.
The new BB, Interloc Racing, has 8mm hex key bolts with rubber seals. I have a suspicion that the rubber seals may have something to do with the loosening. Before I put the old bolts back on I'll remove the rubber seals on the new hex bolts and see if that solves the problem.
08-11-11, 05:32 AM
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Its the bolts use the 14mm hex bolts .thats why I run cottered cranks YOU TIGHTEN THEM WITH A HAMMAH.NO NOISES EVER!!!!Lol
08-11-11, 09:58 AM
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I have had more problems with square taper BB's then most 
. Not to beat a dead horse, but from what I understand greasing spindle is a bad idea, and it makes sense why you shouldn't. Next time will definitely stick to external BB's.
. Not to beat a dead horse, but from what I understand greasing spindle is a bad idea, and it makes sense why you shouldn't. Next time will definitely stick to external BB's.
08-11-11, 11:08 AM
#12
Your cog is slipping.
08-11-11, 04:39 PM
#13
George Krpan
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I've had square taper setups that never creaked.
I think the problem I'm having is due to the plating on the spindle. The old spindle was not plated, super cheap, but the new BB is nicer, Interloc Racing, with a nicely plated spindle.
Next time I have it out of the bike I'll try roughing it up with some sandpaper. Although, I took some square taper BBs out of some old bikes and the spindles didn't have a scratch on them despite being well used.
They were Shimano BBs, a UN72 and a UN91, with pretty plated spindles.
The UN91 was in a "duraluminum" Alan cyclocross bike from the mid-90s and it creaked like crazy. I think it was due to the softness of the frame.
