NCAA - DUAL CHAMPIONS!
Join Date: Mar 2000
Location: From Sarasota, FL sitting in front of a computer spewing random thoughts!
Bikes: Intense Uzzi SL, Masi Speciale, Trek 3700 Nashbar Single Speed, Old Cilo Road frame
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First of all, Yes there is a special tool to remove the crank arms. Your LBS should have one, I would suggest buying one. Park Tools is the standard issue, but other companies make them as well. Make sure you get one that will work with hollow spindles (newer 105 and better), there is a little metal button (Cap??) that fits into the spindle and lets the crank puller push against it!
Secondly, are you sure it's your crank? It may be just the pedal. If the sound is more of a click, I would start with the pedals. Grab the pedal in your hand and twist (sideways) it. See if there is any sloppiness to it. Also, spin the cranks holding the pedal, if a bearing is worn you should be able to feel it as it goes around.
Is the sound more of a clunk? If so, then it could also be your bottom bracket. Grap a pedal in each hand and try moving them sideways. (tangent to the rotation of the cranks) if there is significant play, your bb is shot!
If it's a scrapping sound, it could be the chain rubbing the front derailleur. This sometimes happens when standing up and cranking hard with a lot of force. The bottom bracket assembly (meaning frame) will flex and the chain will rub the outer cage of the front derailleur. If this is the case, turn your limit screw out 1/4 to 1/2 turn and you're done.
"Life is not a journey to the grave with the intention of arriving safely in a pretty and well preserved body, but rather to skid in broadside, thoroughly used up, totally worn out, and loudly proclaiming, "WOW, What a Ride!" - unknown
"Your Bike Sucks" - Sky Yaeger
Last edited by a2psyklnut; 07-11-02 at 02:25 PM.