How to compare axles from different manufacturers?

[KartingIsLife (James McMahon)]

Have you had an opportunity to read through this? It doesn’t quite answer all of your questions, but it does have valuable information in it.

Do different stiffness axles do anything?

This definatley worth more discussion. It is great to see you guy’s have a good handle on material elastic/ plastic characteristics. This could also segway nicely into a discussion on axle stiffeness vs hardness as the stress-strain diagrams play there part in explaining soft axles dont flex more than hard axles of a same thickness…I know this statement will stir some emotions Engineer waiting for robust discussion…