#246b: SRM/FSA K-Force non-drive metal insert separation
Now onto the real problem, I have had problems with the non-drive crank arm wobbling and making noise. I figured it was a result of the BB creaking or a loose connection at the splines, so I redid that last weekend. Today, it seemed to be worse. I almost forgot about it after I figured out the 11t shifting issue, but after I took things apart, something seemed a bit off when pulling the bolt on the non-drive side.
[FSA K-Force crank non-drive side. Aluminum insert is loose in the carbon arm]
I put the drive arm back on to verify… sure enough, the metal insert was loose. When installed the amount of play results in a side-to-side movement of about 2-3 mm at the pedal end of the crank. The paint / coating has flaked off and the insert visibily moves about 0.2-0.3 mm. … I will do some checking around at local bike shops to see if I can get a compatibile part temporaly to put together my SRM again. For now, I have the Red crank (172,5 mm) installed. I might install Andrea’s SRM (also 172.5) for MSGP if I can’t get it straight by next weekend.
Update: 4/13. Talked to Excel Sports (reseller) and heard back from FSA… SRM is one to take care of it… and they will. Late today they told me that they are shipping out a replacement crankarm (used) to get me back whole again for the weekend. Mississippi Gran Prix! If that doesn’t work out, I can get the whole thing warrantied.
Comment by Ryan — April 13, 2009 @ 6:43 pm
decided to start to fail on the drive-side crankarm. Having been experienced with this issue (non-drive arm failed in April), I spotted it right away and stopped using the crank before it got scary. I mailed it off to
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