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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 07-28-05, 03:07 PM   #1
TehArrow
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lbs cant find it after a quick look. i cant find it. but i recently noted that it only happens on my down stroke.
if your bottom bracket was broken would it click when power is applied or somthing? cause i hate when there is a noise i dont know what where its from.

edit: its a very high picthed "ping" like if you took the end of a cable and sprung it into the frame kinda
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Old 07-28-05, 04:17 PM   #2
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1) is the cable end crimp from your FD hitting your crank? Hmm? Is it??

2) If not, start here:

http://www.parktool.com/repair_help/...queaking.shtml

Good luck!
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Old 07-28-05, 07:24 PM   #3
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no its not the cable hitting it happens every down stroke for both feet though.. im going to the bike shop next week and ill take it up further
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Old 07-28-05, 09:47 PM   #4
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What about BB flex under pressure? Could then be your chain rubbing the inner side of the Front Derailleur.
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Old 07-29-05, 06:17 AM   #5
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he adjusted the front derailer thinking that was it(and the fd was off by a good amount) but its still making the sound. and it's in every gear
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Old 07-29-05, 10:16 AM   #6
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Similar thing was happening to me recently. I originally suspected the BB.

I spoke to my LBS and they suggested looking at the chain ring bolts. They were right. I took my chain ring apart, put a thin smear of grease on the surfaces (not the threads) and re-assembled. Now the noise is gone.
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Old 07-29-05, 11:04 AM   #7
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Saddle rails?
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Old 07-29-05, 01:15 PM   #8
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I had a similar pinging, only on the downstroke when pushing hard, turned out I had a spoke problem.
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Old 07-29-05, 05:04 PM   #9
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Your chain ring bolts are probably loose. You don't need to take anything apart just tighten the nuts and hit them with a LITTLE lock tight.
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Old 07-30-05, 02:19 AM   #10
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I had a similar problem that was caused by the spokes rubbing against each other where they cross. I bit of chain lube at each cross fixed it.
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Old 07-30-05, 04:52 PM   #11
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not loose checked. if its every down stroke wouldnt it def be the crank somewhere?
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Old 07-30-05, 06:38 PM   #12
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Check the spoke tension. I just did a roadside fix on my last club ride...Guy's bike was making a strange noise, wouldn't make it in the stand at the shop. New bike, under 100 miles on it, I tightened all the spokes in the rear wheel 1/4 turn, and the noise is gone. Low spoke tension from the factory, or it loosened up from riding, I'll keep an eye on it.
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