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If you push sideways on the pedals, all of the systems with some end float can make a banging noise as they flop from side to side. Obviously the ones with wave washers have to overcome the spring preload before moving, but that seems to be something a lot of people with off axis pedal thrust can achieve.
I'm getting a double cra-crack noise under load, which none of my other BB30/Hollowgram crank installations have had, and I've previously had a lot more power to push the pedals round with.
Dammit
Yes, the design allows for a bit of end float which is resisted by spring pressure. Campag Ultra Torque is the same, as are Zipp Vumas. Coincidentally, I just found the instructions for a 20+ year old square taper CQP BB which has no wave washer to control end float, you just shim it until it has <0.030"
If you push sideways on the pedals, all of the systems with some end float can make a banging noise as they flop from side to side. Obviously the ones with wave washers have to overcome the spring preload before moving, but that seems to be something a lot of people with off axis pedal thrust can achieve.