Singlespeed & Fixed Gear "I still feel that variable gears are only for people over forty-five. Isn't it better to triumph by the strength of your muscles than by the artifice of a derailer? We are getting soft...As for me, give me a fixed gear!"-- Henri Desgrange (31 January 1865 - 16 August 1940)

Opening up my bottom bracket.

Old 04-02-06, 02:02 PM
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DoshKel
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Opening up my bottom bracket.

I need some guidence on opening up my bottom bracket. Everytime I stand up and put pressure on my pedals, a nasty click happens on the downstroke. I tightened up my pedals and crank, but it still does so. So I thought I would open up the BB and clean it out to see if that helps. The thing is, I have never opened up my BB by myself, and am a little scared that I might ruin my ride.

Can someone explain to me how to do it safely, or should I just not mess with it and wait until my LBS opens tomorrow?
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Old 04-02-06, 02:08 PM
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Park tool has a great repair section on their site. It should help

http://www.parktool.com/repair/byreg...ageField2.y=10
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Old 04-02-06, 02:37 PM
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Nice. They have some good information on there.

Thanks a lot .
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Old 04-02-06, 03:07 PM
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and check your chainring bolts too!
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Old 04-02-06, 05:55 PM
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+2

I repacked my bottom bracket and when I put the cranks on saw that 2 of the bolts were loose.
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Old 04-02-06, 06:00 PM
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Matthew A Brown
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Did you grease the spindle arms?
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Old 04-03-06, 08:57 AM
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dosh,
What kind of frame do you have and what kind of BB?
Do you have the tools to open up your BB? You can do a lot with a big crescent wrench but only after you have removed the adjustable side, which needs more obscure tools.

Unless you like dealing with the BB it usually pays to installa shimano cartridge BB 110 spacing, and be done with it. They work great and are very cheap.

Problem is, this sounds like you might have a cracked BB shell.

Take it to the LBS and have them look for something. a hairline crack on the underside of the bike.

Don't grease the spindles, you are not supposed to, this pernicious rumour has given me the sad opportunity to inform several customers that they have just ruined a nice set of cranks. The spindle and cranks should be degreased and bone dry before installation. Greasing defeats the mechanism and only helps you to overspread the crank to the point of uselessness. A novice might not notice at first and it will work fine, but once they crank has been removed it cannot be replaced.

Ask Calvin at Park, he'll tell you.

You do however want to tape the threads of the BB with teflon tape (plumbers tool) as this will eliminate most creaky BB's.
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