Saw this on another site, reinforces my point about having too strong of an axle.
"Quote: Originally Posted by VoodooXP View Post
Turners are by far the strongest. But you will find every other weak link on your RZR. I am running Cobra's, for the money they are the next best thing IMO. When i had the stock axles, i broke a front axle, after putting the cobras in, i broke the front diff. Haven't had any problems out of the Cobra's.
Hope this helps.
Quote: Originally Posted by GHETTOSLED View Post
However, if you try and compare the 570 to a Turner Evo you are wasting your time. Even the Turner HD front CV is significantly larger then the 570 (which you can only run on the rear).. The Turner cage and shaft size is significantly larger and that's why you will find them on ALL the top drag and high HP RZRs pumping 500+ hp. The downside is they do run hotter, and most of the complaints you will hear regarding the turners is based on the grease not holding up after prolonged use. I would say 95% of all the mud guys back east with built motors and lift kits/big tires run Turners.
"We have broken countless ball joints, atleast 30 stock front diffs, 20+ rebuilt heavy duty and re-enforced front diffs , several transmissions, etc and cant think of one Turner axle that failed on its own. You will start breaking other mechanical parts before you break a Turner axle..."
After reading these two posts, I want you to go back & re-read my post #14 on the first page. These two examples above prove my point. (Broke 30 stock diffs, 20+ heavy duty diffs and some transmissions!) What does that tell you? These big axles are only protecting themselves and are not working together with the rest of the drive-line components.
The UTV aftermarket industry needs to learn & understand shock loads and how to absorb the energy vs transferring it down the drive line. You can build a mega huge axle, and anyone can do that. Just build it bigger! But that is not really solving the problem. It is just a band-aid for a factory axle that was built of less quality material and manufacturing process.
I guarantee these Cobra & Turner axles are not designed or heat treated to twist. They are made to be big, strong & rigid. They look to be great for big HP, but not for every other part of the stock RZR drive-line system. Plus how much unsprung weight have you added to your vehicle. BTW Unsprung weight is some of the worse weight you can add to any vehicle. It greatly effects handling, changes shock rebound valving, stresses suspension components like ball joints, a-arms & a-arm pivot points. I dont think these bigger axles are going to greatly effect the places I listed. But as you continue to build bigger heavier parts they will effect those places I listed.
Regarding Turner Axles having heat related issues. There are several ways to fix that issue. One is machining the CV joint housing to dissipate heat. The next is to use high quality grease. I'm sure they will say they are using good grease, but I guarantee they are not using the best types of CV grease".