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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)

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Old 05-24-07, 07:59 PM   #1
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bottom bracket issues

3 out of 4 singlespeed bicycles that I have needs bottom bracket replacements. These BBs were all new. Shimano UN-53. (All square tapered) I'm about 170lbs. Anyone else notice that you wear out bottom bracket faser by going singlespeed? I climb some hills on my singlespeeds. Not super steep, but hills that will force someone fit to break a sweet.
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Old 05-24-07, 08:01 PM   #2
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How many miles are you getting out of a BB?
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Old 05-24-07, 10:39 PM   #3
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500 max
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Old 05-24-07, 11:10 PM   #4
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500 max
This has got to be a joke.
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Old 05-25-07, 12:08 AM   #5
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chain too tight?
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Old 05-25-07, 12:29 AM   #6
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chain too tight?
I got my first FG last year and killed my BB after 2 months, had the chain very tight at first.
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Old 05-25-07, 05:48 AM   #7
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500 max
Something is wrong. I would expect more than that with a BB on a department store bike. Are you installing them?
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Old 05-25-07, 06:05 AM   #8
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You are doing it wrong. You should be getting 5000 and then some.
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Old 05-25-07, 07:35 AM   #9
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i bet your chain tension is hella tight.

i did the same thing- i rigged up a fg with vert drop outs by filing them down a little, and i always rode with the chain tension rock solid. my chainring bolts kept coming loose, but the real problem was after a while i got this creak that wouldnt go away. i found out i had crushed at least half the bearings in the bb, because my chain was pulling on the thing with about 100 n/m of force.
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Old 05-25-07, 09:13 AM   #10
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500 is weak. I've been running a campy veloce BB for over a year, and it's a pretty cheap one. I ride about 50mi/week.

I'm going with those who cry chain tension.
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Old 05-25-07, 10:33 PM   #11
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Yes, I am running tight chains. I'll look into half links or just position the rear wheel a bit closer.

thanks for the input!
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Old 05-25-07, 10:36 PM   #12
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trackstar your signature is making me very anxious. NOT digging it.
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