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Dura Ace Crank Arm Bolts (FC 7701)

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Dura Ace Crank Arm Bolts (FC 7701)

Old 06-21-10, 10:41 AM
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Dura Ace Crank Arm Bolts (FC 7701)

I have just built up a frame with a used DA 25th Anniversary edition group set. The crank arm is FC-7701.

After an initial test ride, I noticed that the crank arm bolts (into the bottom bracket) had loosened. I tightened them up, only to have them loosen out again.

Next time I used some teflon tape and increased the torque (although I do not yet have a torque wrench). Same result.

I can get a torque wrench (or go to my LBS) but I am surprised that the bolts back off so quickly. Can anyone suggest what I might be missing?


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Old 06-21-10, 10:55 AM
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