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knocking crank

Old 06-03-08, 07:51 PM
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trek1000wizkid
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knocking crank

I have a knocking crank (the bike I bought sat for 15 years) and I am thinking about switching the bottom bracket to a campy and get a campy crank. am I getting in over my head? how hard of a swap would this be, I am pretty handy with tools
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Old 06-03-08, 08:01 PM
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http://www.parktool.com/repair/

that should cover a lot of it.
causes of a knocking crank is probably just a loose screw where the arm and BB meet. either that or it's the pedal.
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Old 06-03-08, 08:13 PM
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thanks it make kind of a clunk when I pedal really hard, clunk seems to only be on the right side. When I coast there seems to be a vibration coming from the crank
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Old 06-03-08, 08:18 PM
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It may just be loose? And or needs to be greased. Not sure what type of crank/ BB set up you have but check the crank bolts first. Then consider pulling the crank and BB to clean and lube. Not hard at all.
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Old 06-03-08, 08:31 PM
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the bike has suntour 4050 edge components
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Old 06-03-08, 08:50 PM
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also it is a 1988 trek 1000 I am thinking of upgrading brakes to campy dual pivots, is this something I can just bolt on?
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Old 06-03-08, 09:20 PM
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Also consider that your driveside crank arm may be hitting your front derailleur cage.
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Old 06-03-08, 11:47 PM
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Not an expert on "older" bikes, but I don't see why they wouldn't.
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