Hello guys, as some of you know, I am from Brazil. Here we have some kart axle manufactures, and we import some as well, for example, OTK.
Here in Brazil everybody talks about axle stiffness in numbers. Below I show an example:
Thunder is a local manufacturer brand. They sell Parolin axles as well.
My questions are:
What means these numbers?
What unit is it?
Do you measure axle stiffness in US and Europe like that?
If not, how do you compare stiffness between different axle manufactures?
I heard some axles have different stiffness along their length.
Is it true?
Why axle manufactures do that?
How to select a good mixed stiffness axle?
When harder axles just in the middle are useful?
When harder axles just at the ends are useful?