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Forum: Bicycle Mechanics

11-22-20, 01:08 PM

Replies: 8

Wobbling crank

Views: 696

Posted By dabac

By the pic, I’d say those are steel crank arms....

By the pic, I’d say those are steel crank arms. IME, they rarely come loose. If they do, they don’t self-destruct quite as fast as aluminium crank arms.

Forum: Bicycle Mechanics

11-22-20, 10:16 AM

Replies: 8

Wobbling crank

Views: 696

Posted By curbtender

A friend got one of these to get some exercise....

A friend got one of these to get some exercise. At 260, he bent the spindle pretty quick. Some bikes are cheap for a reason.

Forum: Bicycle Mechanics

11-21-20, 07:18 PM

Replies: 8

Wobbling crank

Views: 696

Posted By JohnDThompson

Is it one arm wobbling on the spindle, or the...

Is it one arm wobbling on the spindle, or the whole assembly (both arms and spindle) that wobble together as a unit?

If the former, the arm has worked loose on the spindle. Unfortunately, that...

Forum: Bicycle Mechanics

11-21-20, 11:46 AM

Replies: 8

Wobbling crank

Views: 696

Posted By dabac

That’s a square taper cup&cone BB. I’d try to...

That’s a square taper cup&cone BB.
I’d try to tap the lockring loose, screw in the NDS cup a little and tighten the lockring again.
Anything beyond that, odds are you’ll be spending a fair amount...

Forum: Bicycle Mechanics

11-21-20, 11:33 AM

Replies: 8

Wobbling crank

Views: 696

Posted By HillRider

What make and model of bike? What make and model...

What make and model of bike? What make and model of crank?

Park Tool's web site has a large number of tutorials on all aspects of bike repair so see if you can find the type of crank you have...

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