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Almost 3 years ago, Thomas Hendrix from Hendrix Engineering asked the guys at the DSS to make a set of axles with different diameters, saying he believed that it would help with wheel hop on certain cars. This technology is no longer considered new and was actually created by both GM and Chrysler on SRT8's and Corvettes. However is is still very effective. The way the system works is this: when the torque is applied to the rear wheels thru the drive train. The axles twist torsionally at a given rate. What happens on cars with certain types of suspension is: as they both wrap up at the same time, they also release at the same time and cause the wheels to "HOP." With different diameter bars, this "wrap up and release" happens at different times, helping the wheels to spin. Now on street/strip cars this is a great thing, but keep in mind that like the factory axles, they will have limitations. The point of this is to make one axle stronger and one weaker. If your GTO is really putting out some power and you want to eliminate the dreaded "HOP," this set of axles was designed for you!
What we have done different is this, our skinny bar is smaller in diameter than a standard 28 spline a stock 108mm CV would use and its made from 300m, We have rolled the spline onto a ground piece of the material that during the rolling process raises the spline above the center diameter of the bar (this is done with all rolled splines DSS uses), what this also does is allow us to make the axle with out any internal snap ring (no internal groove for a square edged stress riser during torsional shock loading) We then make the Big bar using our 300 material out of Sweden but its made with a 1-1/2 diameter to balance out the strength. this like the other bar has the rolled splines so at the edge where the race will meet the spline (area of most failures) its much stronger due to the re-forming of the same material instead of taking away grain structure/material like a cut spine. so if your running a car up to or around the 1000hp range (keep in mind auto and 6 speed cars will have different effects on Hp ratings) and want to reduce some of the wheel hop this just might be the axle set for you.
please keep in mind a high performance race car will need the axles to be the same diameter for obvious reasons stated above. choose your parts wisely.....