by GregSR on Mon, 03 Mar 2008 9:58 +0000
Ok, I'm back.
Here's what's happened so far.
My friend, the Engineer called back and said, hey, "walk me through your issue again, when we spoke I was pre-occupied and only half listening".
Great!
Anyway we talked, he had me under the car measuring transfer output flange height and angle, centre bearing height and angle, diff input shaft height and angle, driveshaft length, front section and rear section.
Conclusions,
1/ Centre bearing dampener too soft allowing too much movement
2/ Based on the driveshaft lengths expressed as a ratio (first section longer than second) 45mm of lift requires roughly 20mm of centre bearing drop to retain stock angles.
3/ If diff wedges are used, each degree is worth approx 6mm of lift at the uni centre line.
Here is what I have done and my interim results, and no, I will experiment and post results, make up your own mind from there.
1/ Dropped Centre bearing height by 23mm (thats the spacer size that I had)
2/ Wedges, not yet, I didn't have any.
centre bearing drop reduces angle of second half of shaft into diff nicely (18-20mm would be fine I'm sure)
Shudder gone, small vibration noticeable at 20 and 40 kph when engine labouring,
Last edited by
GregSR on Mon, 08 Dec 2008 5:37 +0000, edited 1 time in total.