Thread: Another driveshaft question. Side to side angles?

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Got this off of Denny's Driveshaft site!

Angle
How much driveline angle is right for my application?

Thats a loaded question. The best answer is....the least amount of driveline or u-joint angle is the best amount of angle. Try to achieve the least amount of u-joint angle but don't make it less than 1 degree. A little known fact about u-joints is that they require about 1 degree of operating angle to get the needle bearings rotating. If they do not rotate they will fail. Too much angle will also cause them to fail. The type of rear suspension also plays a big part in setting the angles as well as the engine/transmission angle. Leaf spring cars have a need for more downward pinion angle due to spring wrap-up while coil spring cars control the situation better. Hard acceleration as in the case of a drag race car requires a different setting than a street driven car. Traction bars, ladder bars, 4 links, independent rears all have special needs and requirements

http://www.dennysdriveshaft.com/freq....html#faq_id25

I told you so is right. The centerlines for the transmission output shaft and pinion should be parrallel. I was told by a GM design engineer best to keep a 0.5 degrees difference for my application. My rear doesnt move. IRS. Also dont forget to put 2-3 degree angle on the tranny and pinion.....to allow the ujoints to cycle. Got most of those answers from these guys on here though!


EDIT: LOL's. Sorry Jack. You already answered. I'm going to have to tone down on the coffee. It doesnt mix with my speed reading. LOL's.

Dave G