For comment: "Why It's Impossible For Steel Frames To Be More Comfortable..."

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Originally Posted by flying

Simple test
You can stand on the side of a bike hold bar with one hand & with pedal/crank at 6 o'clock put a foot on pedal & push towards the crank. This shows how much BB lateral flex that bike has.

I grew up with that 'test'. But it really doesn't tell you anything..... almost all of the flex that you see comes from the tires and wheels.