| Author | Message | ||
     Greg Hirst (Gregh) Member Username: Gregh Post Number: 184 Registered: 10-2002 |
Has anyone tried their supposedly stronger CV joints available for Land Rovers? They claim they manufacture from 300M and special heat treatment. http://www.cvunlimited.com | ||
| Ron Brown (Ron) Senior Member Username: Ron Post Number: 354 Registered: 04-2001 |
I saw them, I have longfields instead and have yet to have an issue. Ron | ||
| Roland Kutasi (Disco1) Member Username: Disco1 Post Number: 148 Registered: 10-2002 |
Fasten your seat belts everyone....here we go again! | ||
| Mark Albrecht (Markalbrecht) Member Username: Markalbrecht Post Number: 81 Registered: 11-2002 |
Maybe I'm a victim of 'a little knowledge is a dangerous thing' and I have not used the cv unlimited product, but wouldn't reducing the spline count make for a weaker product (possibly off set by the increase in diameter and material change)? | ||
| Greg Hirst (Gregh) Member Username: Gregh Post Number: 187 Registered: 10-2002 |
Well I just did a search and could not find anyone who had actually tried these CV's. Although there's a crapload of posts about CV's in general and many opinions about other options. That's why I asked if anyone had tried them. Mark-reducing the spline count isn't the issue-it depends on whether the surface area upon which load is applied is increased or not. Thus, if the splines are longer (extend up axle further), etc. they may be stronger (assuming an equal corresponding surface to transfer force to) than more splines that are shorter. Obviously it also depends on whether the material used being stronger/weaker too. | ||
| Larry Grubbs (Larryg) Member Username: Larryg Post Number: 231 Registered: 03-2002 |
Mark, The Early D110 CV's are 23 spline and considered 1 ton CV's, at least by Landy owners. Greg pretty much hit the nail on the head. I would be curious about the CV Unlimited LR CV's. Anyone have a price on them? Larry | ||
| Mike Carino (Mikec) Member Username: Mikec Post Number: 91 Registered: 03-2002 |
I always thought that fewer splines meant stronger because it created a greater surface area on the spline itself. Therefore you have less chance of destroying the splines as more torque is applied. Is my thinking wrong?? Also i think that the weak point of a cv is the cage and housing. I believe that increased angles and strain cause the housing to crack and the cage to shatter. So a stronger metal would keep the housing together. And Ron correct me if I'm wrong but I believe Bobby Long heat treats the metal for durability of the housing and then does some welding on the cage itself to strengthen it? I could be off base on all points though. Mike | ||
| Brian Friend (Brianfriend) Senior Member Username: Brianfriend Post Number: 858 Registered: 09-2002 |
Every cv I have ever broken was the either the start ehat the axle goes into or the race that keeps the balls in place. I have never broken the "shell" | ||
| Mike Carino (Mikec) Member Username: Mikec Post Number: 95 Registered: 03-2002 |
Yea Brian, come to think of it, I think the housing cracks as a result of the cage having damage first. I think that is part of the domino effect. Mike | ||
| Greg Hirst (Gregh) Member Username: Gregh Post Number: 188 Registered: 10-2002 |
Mike- I think you're right about the weakness of the CV being the cage rather than the "bell" or "shell". My understanding of rover CV's is that a cracked or damaged bell was almost always secondary to the cage and inner star destructing first. That's one reason I asked about these cv joints as they claim inner critical components made from 300M. In general, my understanding is that less splines mean weaker (although not always as in my post above) because the more splines, the more surface area that force will be distributed over(assuming same length of spline, etc.). It's also my understanding that (rather than spline count) the early 110 CV's are stronger due to thicker inner axle area (1.2"?) vs. something like .88" on more recent cv joints. My 2 cents | ||
| Keith Kreutzer (Revor) Member Username: Revor Post Number: 196 Registered: 11-2002 |
Greg has hit the nail on the head! D90/Disco CV's fail because the small diameter internal splines fail to hold the torque put to them in serious situations, the small splines twist in the star and cause the star to blow... The Disco Bell and cage are only a little bit smaller than an early 110 CV.. If the disco axle and CV had the same (110) spline the would be 90% as strong as the 110 CV... Hmmmmm i'm gonna do that in my truck... |
