Friday, February 12, 2010

Continuing the Crank Saga

The bottom bracket fix seemed to do the trick on the Zipp cranks, but check out this latest problem:

video

If you look closely you'll see the threaded sleeve moves back and forth as I try to tighten/loosen the pedal. It only takes about 0.5Nm of force to make this happen. I'll be having an interesting conversation with Zipp on this problem.

I've since gone back to the old aluminum SRAM Rival cranks. Today will be the first ride with the old crankset and I'm hoping it will be enlightening particularly around the stiffness and lack of chainring flex. I did notice a bunch of flex with the Zipps and recently confirmed that their new chainring design due out in March would fix this problem. Too bad I won't be running your cranks Zipp to let you know if the problem was fixed.

No comments: