by NowForThe5th on Sun Jan 29, 2017 8:09 am
Correct, Dan. Standard they don't do it. But give them a lift and watch how it all changes.
There seem to be a few urban myths developing about shudder. As I said above, it has nothing to do with tyre pressures and a tailshaft spacer won't fix it. It's all about the angles that the tailshaft(s) have to turn through and a mismatch of the angle at one end against the other. That's why the 2 piece tailshaft suffers from it while the 1 piece doesn't. In the 1 piece the angles are equal at each end. But in the 2 piece they're not, mainly due to the centre bearing.
As an aside, Tritons do suffer from shudder more than other brands. Why? Because Mitsubishi have stuck with a 3m wheelbase. Shorter wheelbase means better turning circle but it also means that the distance from the end of the gearbox/transfer case to the diff is somewhat less. So, the angle that the tailshaft has to turn through is greater. Stick a chassis cross member in the way and have to go around that with a 2 piece tailshaft and you have a recipe for shudder.
The only way to fix the problem is to replace the 2 piece with a 1 piece tailshaft but that risks the tailshaft hitting the cross member if you have a lift or springs that allow more drop. Otherwise, space the gearbox down, lower the centre bearing or rotate the axle up.
Putting a load in the back fixes it too. Why? Because as the springs compress they move closer to the body and the angle at the front of the diff comes closer to that at the other end. A tailshaft spacer won't fix the shudder but it does take the strain off the centre bearing as the suspension drops.
Chris
If work is so terrific, why do they have to pay us to do it?