Quote:
Originally Posted by MightyMouse
An often overlooked fact is that an axle acts as a torsion bar and is designed to twist ( and obviously rebound ) when loads are applied reducing the shock loadings on the diff. Outright strength isn't the only design criteria
A good axle is elastic as well.
I'm sure the axle makers know their stuff and a 35 spline JK axle has the correct characteristics - so just adding this as information.
|
It is relatively well known that a 35 spline axle is not ideal on a std D44 (not new generation JK44). It became available because 35spline 9" ARB side gears swap straight into a D44 ARB. All that was needed was to make some 35 spline D44 shafts.Many people still think bigger is better and the axle manufacturers are happy because they will never have to warranty a 35 spline D44 shaft as the ring and pinion will almost always fail first.
The new gen JK44 ring and pinion is rated as 44% stronger than a std D44 so 35 spline shafts may have adequate torsional give before ring and pinion failure however I was advised to go for 32 spline chromo axles on a JK44gearset or 35 spline shafts cut down to approx 32 spline diameter for the majority of the shaft to produce more torsional give.
I'm no expert but the people my info comes from are pretty knowledgable on this stuff.
Obviously axle material plays a big part in axle characteristics to but to my knowledge most (all?) aftermarket axle manufacturers do not change materials for D44 30,32,33 or 35 spline axles.