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My LBS horror story.(4 posts)

My LBS horror story.VictorChan
Aug 17, 2001 1:45 PM
Man, my newly installed Dura Ace crankset went parallel on me (downward). I have my LBS installed the new Dura Ace crankset and BB for me. They got this kid to do the job. What can I say? I was worrying shit. I read the previous thread about the similar experience. Fortunately, I was only 5 minutes walk away from my home. I hopped into my car and drove to my LBS. They seemed to fix it up now. Now, I notice that the both crankarms are well inserted into the BB, almost touches the wall of the BB. Hammering the bike for 20 minutes and all seem fine.
read this, i had a similiar experiencepedalriot
Aug 17, 2001 2:03 PM
I recently replaced the bottom bracket and crank on my mountain bike, swapping the old spindle style for shimano's new spline drive. I ordered the same bottom bracket size, and found that the cranks seated themselves very near to the bottom bracket shell. The clearance was quite slim, but there was no contact. However, after a few days of hard riding, a noticable ring was worn around the bottom of the crank from contact with the bottom bracket cup.

Diagnosis: wrong bottom bracket. even though the one i ordered was the same as the old bracket, i still needed a longer spindle. thus, i ordered a new one, and everything has been great.

Keep an eye on the crank!
read this, i had a similiar experienceVictorChan
Aug 17, 2001 2:45 PM
Thanks for the tip. I think there is only one size for the Dura Ace BB though. Will keep my eyes on the crank.
not a problem on road applicationsMike K
Aug 17, 2001 5:33 PM
This is a big deal with MTB. When you go from a tapered spindle to a splined spindle BB you usually have to go to the next size up (e.g. 110mm to 113, etc).
I'm sure there have been exceptions but I have never seen this to be a problem on a road bike and the DA BB only comes in one (spindle) size.
Also, you may want to have another shop look at your crank arm (the one that slipped) and that side of the BB to make sure that the splines are OK on both. The inside of the crank arm is pretty easy to bugger up. If their was damage and they just shoved it back together on a hope and a prayer you may have problems down the road.