Dont worry guys My brother and I will test the moser axles in his car. If they twist after a season of tranny brake abuse. I will let you all know either way...
im not saying that everybody needs to get rid of there moser axles. im saying there is (in my personal opinion) a beter option for the same cost. i belive that moser and currie are the most popular due to advertiseing, not having the best product possible.
this is the problem with moser, and dutchman. when you cut splines into a axle shaft that is already hardened you cut the hardening off. so the splines are not in in hardened material and the axles are not rehardened either.
Bryant is partly correct. Let me explain What most people dont know is that axles are designed to twist. When an axle is under load the twisting of an axle cushions the loads on the splines. In most stock vehical cases there is not a enough load to cause problems, but when people start to make modifications you can create enough tension to grind out the splines. As axles become shorter the twisting of the axle is less so its more likely to strip teeth. Why do people say stock axles are stronger? Its really because they are weaker that they seem stronger. After market axles are made thicker so they can be cut up to 36 splines. Install after market axles with 28 splines and you just doubled the stress on your axles teeth because the axles are so thick now that they dont have the twisting they used too. So can it be done, sure, but if you add other things like increasing H.p., shortening axles length, increasing diameter of the axle tubes, running a spool on the street, posi units, running MT street slicks, then these things combined together will cause problems.
Ok this is focused around dana 60 axles but I thought the data would be pertinent to this discussion, so here is a good write up on axleshaft integrity it also gives a breakdown of torsional load and material used in axleshafts also the process that the splines were formed into the axleshafts http://www.pirate4x4.com/tech/billavista/PR-BV60/index1b.html note this quote in the center of the page "[FONT=Arial, Helvetica, sans-serif]The little known FACT is, the material and how it is heat treated have NOTHING to do with how much the axle will twist under a given load. How much an axle will twist is determined by the torsional modulus of elasticity of the axle, which as you will recall from part 1(I added the link for it below) is a constant for all steels. This means that all axles, of the same size and profile (shape), under the same load will twist exactly the same amount."[/FONT] and for more information on the steel this is a good writeup also (it is the first phase of the article) http://www.pirate4x4.com/tech/billavista/PR-BV60/index1a.html Please note all of the data has been referenced from the derived standards for materials used, and even have direct ASTM references. Also they have taken data from manufacturers websites as noted. Happy reading (oh and sad to say guys superior axle only makes 4 wheel drive parts so we are SOL if we want them for our 8")
Thanks for the link mark. I actually study metal for fun. I know about the twist already but the article was still enlightening on many levels....
Like I said before,I've got customers with 900-1000 HP. w/Trans. Brakes on 31,33,35,& 40 spl. Mosers running as fast as mid 8's (1/4) no breakage,Moser Warrantys their 33 and up for 10 years,never had to use their warranty for any of my customers in almost 20 years,and if you don't get a slight spline twist with major HP you ARE going to have trouble with breakage......JMO ,I only do it for a living...
supior does make car axles. but only c-clip style ones. i belive that currie does harden the axles after the machineing. when they hardened then machined you can see the shiny metal of the machineing. when its machined then hardened they axle discolors. all of curries axles that are new that i have installed have had the hardening discoloring. now they will cut and respline axles and those ones do have the problem that im refering to.
I'm also a dealer for Randys Ring & Pinion,and they sell Superior Axles,I use them in "standard" applications,1/2 tons,SUVs,ect. They seem to be a good replacement,I do have a few offroad guys on Superiors and they like them,don't know how well they would stand up to severe HP use.
Apparently I stand corrected on that fact I have only tried to look them up for my common applications and I was told at one time they were only for the truck axles.
it is a shame that superior doesnt make axles for the 9" and 8". superior is a subdivision of foot axle. foot axle makes alot of the axles for the car manifactures. so with superior axles you get oem equipment quality.
