Spool Splines

[Adger Smith]

I have nixed and matched before.It is MW that uses the different spline. Strange also throws you a curve on the location of the splines in the spool. your axles have to be centered and almost touching because Strange puts it's spline in the center of the spool, "not" all the way through it or to the outside bearing. You have to be careful of spline engagement. In 40 spline MW uses the same as moser and strange..

[GTX JOHN]

I concur with Alger....at least that is my experience with mopar 30/35 splines. I do not know about 40 splines being the same angle for all axles or not. I would put bluing or something similar on axles with strange spool to check spline engagement.....I crashed my car because of inadequate spline engagement. I think you need an inch or more.....does anybody know?

[Myron Piatek]

I have always heard that maximum strength is achieved when spline engagement is at a depth at least the diameter of the axle shaft.

I think the same theory (and rule) applies to wheel studs and their engagement into the main body of the lugs.

[Chris Hill]

Originally Posted by Myron Piatek

I have always heard that maximum strength is achieved when spline engagement is at a depth at least the diameter of the axle shaft.

I think the same theory (and rule) applies to wheel studs and their engagement into the main body of the lugs.

The design rule of thumb from my engineering class is engagment needs to be 1 1/2 times diameter. I think this is for grade 5 fasteners. Though we all know this can be less if in a pinch.