Originally Posted by seely
They do. When I stand and pedal hard in a big gear the chain will rub the derailleur cage when I am mashing the drive-side. Sitting or going easy it wont.
You're flexing the crank and not the frame I would think. I can do that with my Giant OCR Elite with a TruVativ Rouluer crank on the trainer and I can see the chainring flexing. Not an issue to me becuase I usually do high cadence low torque ridding. Try looking down when you hear that, but on a trainer not the road
