Originally Posted by
rpenmanparker
I don't believe it. Why would a bike break on a trainer? What could be gentler on a bike than being mounted on a trainer. The only part that's fixed is the rear wheel axle, and that is able to swivel up and down. (My trainer doesn't clamp the wheel to the roller spindle. It is held there just by rider weight.) Urban legend crap.
Because if you're putting down power to the point it flexes the frame and it's locked in a trainer, that strain has to go somewhere. On the road, it just flexes. In the trainer it flexes with part of it unable to flex. I've even seen manufacturers say their bikes can't be ridden in trainers. Do not recall the name though...