Bicycle Mechanics - Think my crank arm is cracked

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View Full Version : Think my crank arm is cracked


adlai
07-08-09, 03:04 PM
Specialized Allez 2006 that I'm using as a commuter/touring bicycle

I think the crank arm has a crack in it. This is the best photo I can manage

http://img224.imageshack.us/i/crack.jpg/

You can't see it in the photo (camera phone), but there is a tiny little hairline crack right around where I drew the orange line.

I think it's a crack. it's along a pressure-bearing part of the bicycle. It tends to accumulate dirt, and when I run my finger along it, I can feel it, although I can't like put anything inside, and the bike still pedals as strong as every.

What should I do? About how long do I have before it falls off? Is it a problem? What should I do about replacement?


kycycler
07-08-09, 03:10 PM
The area of the crank that you refer to should be smooth. If you can feel a ridge with your finger I would suspect a crack. Remove the crank and send it back to the manufacturer. They may cover on warranty. You will probably have to work through your LBS.

adlai
07-08-09, 04:03 PM
yikes, so I don't know how I can cheaply replace just the arm. Suggestions for parts suppliers?


adlai
07-08-09, 06:01 PM
http://cgi.ebay.com/CAMPAGNOLO-MIRAGE-CT-9-SPEED-ROAD-CRANKSET-34-50_W0QQitemZ370213088911QQcmdZViewItemQQptZCycling_Parts_Accessories?hash=item56326b6e8f&_trksid=p3286.c0.m14&_trkparms=65:12|66:4|39:1|72:1205|293:1|294:200

thoughts?

miamijim
07-08-09, 06:04 PM
Jeez, for $25, as long as its compatible with what you have, how can you go wrong?

adlai
07-08-09, 06:10 PM
Uses Square Taper 111 mm bottom bracket

wtf?

adlai
07-08-09, 06:45 PM
wow, this is bad.

Okay, lastly, what's the length of the Sugino warranty?

adlai
07-10-09, 07:51 AM
bump