Yoke engagement question
Yoke engagement question
Originally Posted by Project GatTagO
Are you getting any vibrations? What can happen when the driveshaft is too short and there isn't enough spline support to stabilize the yoke, the front u-joint can start "jump roping" which will cause a vibration. With an IRS car, I would want that yoke in as far as possible and leave 1/2" before the yoke bottoms out against the output shaft.
Also, do the splines inside the yoke extend all the way to the front tip of the yoke? I bet not.
Andrew
Also, do the splines inside the yoke extend all the way to the front tip of the yoke? I bet not.
Andrew
Yoke engagement question
Originally Posted by Project GatTagO
Are you getting any vibrations? What can happen when the driveshaft is too short and there isn't enough spline support to stabilize the yoke, the front u-joint can start "jump roping" which will cause a vibration. With an IRS car, I would want that yoke in as far as possible and leave 1/2" before the yoke bottoms out against the output shaft.
Also, do the splines inside the yoke extend all the way to the front tip of the yoke? I bet not.
Andrew
Also, do the splines inside the yoke extend all the way to the front tip of the yoke? I bet not.
Andrew
Originally Posted by Project GatTagO
I can confirm this. When I was doing some fitment testing on my 1970 GTO, I had the tail shaft housing off the trans. I installed the driveshaft and put a zip tie at the end of the slip yoke. Then I bounced the car as much as I could and also lifted it up as much as possible, and the zip tie moved about 1/8". Assuming there was more suspension travel when driving, on that particular car I doubt that the slip yoke moves more than 1/4" Also keep in mind that if the driveshaft and the pinion are mostly parallel to each other, as the pinion rises when power is applied, the yoke will actually move back, not forward. This will vary with different driveline angle arrangements, of course.
My latest Cougar build has this beauty installed:
The CV joints have some play in them and I don't have to be concerted about driveline angles anymore!
Andrew
My latest Cougar build has this beauty installed:
The CV joints have some play in them and I don't have to be concerted about driveline angles anymore!
Andrew
That's pretty cool stuff. Looks expensive! I'll also say that if all else fails and I'm having trouble with the shaft being to short I can always make a small aluminum spacer to go in between the diff and driveshaft. That would be a hell of a lot easier than laying someone to lengthen the driveshaft.
Andrew
Yoke engagement question
Originally Posted by Project GatTagO
If you make a spacer, just make sure it indexes on something concentric with the pinion so that you don't introduce any unwanted runout.
Andrew
Andrew
Hopefully I don't have to deal with it but the diff flange has a large hole through the center so I can use the ID to make sure it's concentric.
