tell me about propshaft angles . . .

[v8trev]

Been reading up on propshaft angles and it seems most recommend that to avoid prop vibration the centre of the gearbox tailshaft should be in line with the centre of the diff - so that you have a completely straight driveline.

Seems to me that this is somewhat over the top and though it may well be the ideal situation, in practice is seldom achievable.

So, am I right in thinking that so long as the flange on the gearbox tailshaft is parallel to the flange on the diff and the prop is not at too steep an angle between the two then all should be well?



Ta

[sidecar]

Been reading up on propshaft angles and it seems most recommend that to avoid prop vibration the centre of the gearbox tailshaft should be in line with the centre of the diff - so that you have a completely straight driveline.

I've heard that you should not have the propshaft setup in a totally straight line. The reason is that the UJ joints must be made to move as the propshaft turns to aid the distribution of the grease in each joint. (In other words, to "work" the joint)

Pete

[v8trev]

Thanks for your fast reply

So the set up in my diagram is acceptable then ?

[kiwicar]

as above,
I always thought the flanges should be parrallel but the propshaft should be at an angle of 3 to 4 degrees to the line of the output shaft of the gearbox at rest normally loaded.
Mike

[sidecar]

Thanks for your fast reply

So the set up in my diagram is acceptable then ?

I reckon so!

[v8trev]

Thanks guys - much appreciated.