What is the minimu angle for the propshaft?
I have a resonation on high speed, it look as if the car is falling apart…
I already mounted an other (balanced) propshaft, other diff, another adaptorplate on the engine.
No play. Now I am thinking the angle is to low so the prop is going up and down in the rubber bush,
Is it an option to remove the sierra rubber bearing and mount a fix one?

[Edited on 29/6/06 by erwe]

Hello Rob,

The two joints on your propshaft, do they make the same angle when it is fitted? Difference in angle wil give difference in angle speed en can cause vibration.

Greets Roy.

Maybe a new rubber bush is needed or as you say the angle is not enough. Ours is approximately 10 degrees from straight.

Steve

Could this be a problem? I have the engine at the same angle as the propshaft.
Rescued attachment prop.jpg

I was led to believe that the flange on the engine needs to be parallel to the flange on your diff. From the picture they are not.
As one UJ turns through an angle the drive-shaft accelerates and decelerates, and so needs the other UJ mounted at the same angle to balance out.
Have you tried to use a C-V joint instead of your UJ? This negates the need to stay parallel as the C-V joint is essentially two UJ's cancelling each other out
Rob

Thats the problem Rob

(i´m also dutch)

You need to compensate the wobble

witht he other angle.. wobble *- wobble = no wobble...

wobble * - 1 = wobble


Look at my pic archive!!

no vibrations! when drive shafts not connected and in 4gear max revs..

also 0 degree = 100% torque eff.

Tks


[Edited on 29/6/06 by tks]

tks, I don't get your point.....
Otherwise mail me in dutch....