Posted by Dana [162.158.69.93] on Saturday, September 17, 2016 at 13:05:17 :
In Reply to: wimpy dana 70s posted by Kaegi [108.162.244.121] on Saturday, September 17, 2016 at 11:08:37 :
That's interesting but remember not all 70's are created equally. I too think the 9 5//8 is a hoss of a center section but it's limited by the coarse 16 spline shafts. There is no comparison between the strength of a modern shaft vs square OEM.
Splines are either "square" or "involute" in shape. Involute splines have teeth with a profile where the tip is narrower than the base. Involute splines have 3 distinct advantages over square cut:
Involute spline couplings have greater torque-transmitting capacity than any other type
Involute splines can be produced using the same techniques and equipment as is used to cut gears; and
Involute splines have a self-centering action under load even when there is backlash between mating members[4]
the faces of the splines are slightly curved to provide optimum contact and even pressure distribution during engagement
https://en.wikipedia.org/wiki/Dana_70
Excellent shaft technical reading:
http://www.pirate4x4.com/tech/billavista/PR-BV60/index1b.html
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