Lightweight Axles

[Stick Racing]

Originally Posted by Bill Edgeworth

Listen to Wade.

Lightest AND smallest diameter.
Taking two rotating parts of the same weight lets say a solid axle verses a larger diameter gun drilled axle the larger diameter part of the same weight takes more energy to accelerate to the same speed. In fact a lighter part that is significantly larger in diameter can take more energy to accelerate.

Here is some casual reading on the subject;

http://en.wikipedia.org/wiki/Moment_of_inertia

Now when it comes to aluminum verses steel spools I think there is much more too it than rotational inertia. I think flex and friction may play a big role.

So just build your whole drive train out of titanium then we can start talking about $200,000 stockers LOL

LOL? I was in Orlando some years ago and walked by a SS Hemi car. They were changing the center section in the rear. The axles were sitting behind the car. They were a shiny grey, unlike any axles I have ever seen. I commented to a friend about it. He walked over and picked one up. It wasn't steel.

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Andy Stone 1102 A/S 1112 SS/C