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Bicycle Mechanics Broken bottom bracket? Tacoed wheel? If you're having problems with your bicycle, or just need help fixing a flat, drop in here for the latest on bicycle mechanics & bicycle maintenance.

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Old 07-28-11, 02:18 PM   #1
dave1701
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Cheap Schwinn going to hell

When I was riding my cheap Schwinn all of a sudden this happened:







I don't know a dang thing about bikes, so I need some help. If you can't tell, the crankshaft thingy is sliding around from side to side, taking with it the sprockets and the petals. This is near 3/4" of play. Can anyone help me fix this? I need to go for a ride on Friday with my family.

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Old 07-28-11, 02:21 PM   #2
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Looks like the bottom bracket has either come apart or failed, unless you have the tools, you will need to take it to a bike shop to have a new one fitted. http://www.parktool.com/blog/repair-...et-service-bbt
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Old 07-28-11, 02:42 PM   #3
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Old 07-28-11, 02:50 PM   #4
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What are the 2nd batch of photos showing that the orginals didnt?
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Old 07-28-11, 02:56 PM   #5
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Oh I don't know. I guess nothing. Excuse me because I'm not very smart, but you say the bearing is shot? What would a shop charge for a repair like this?
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Old 07-28-11, 03:45 PM   #6
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+1 the bottom bracket (bb) lockring looks loose, and maybe the bb is toast if you've been riding it loose for a while. I know from experience that if you don't have the proper spanner to tighten the lockring, you can never get it tight enough that it won't come loose again.

Just guessing off the top of my head, but maybe a new bb and installation at the store would be around $15-20 for the parts, $15 for labor? Pure guessing... When I had one replaced at my favorite store, they didn't charge me any labor but that's because I'm a nice guy.
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Old 07-28-11, 07:13 PM   #7
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u could tighten that ring w a screwdriver and a hammer but...
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Old 07-28-11, 07:17 PM   #8
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Well my dad was able to screw it back in with vice grips. I'll keep an eye to see if it gets loose again.
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Old 07-28-11, 08:18 PM   #9
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Sometimes the only tool to have is a pair of vice grips.
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Old 07-28-11, 11:22 PM   #10
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20:1 it's fine but the bearing needs to be adjusted and tightened into place. Don't ride it this way because you take a simple repair and make it much more expensive.

This can be done at home if you have the tools and knowledge. Given your lack on both fronts, I suggest letting a pro do the job. It's straightforward and shouldn't cost much at all, probably $10-15.
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Old 07-29-11, 07:40 AM   #11
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Is there any warranty on the bike?
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Old 07-29-11, 09:48 AM   #12
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Nope. This bike is 4 years old.
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