Pinion Angle

[JeffMcKC]

Thought this may help some of you guys understand pinion angle a bit better, and why you cant just cancel them out like a passanger car like some think


http://www.flickr.com/photos/simpkinsfamily/7387713670/

[milner351]

Great Video - thanks for sharing, that does help to put things in perspective.

[Barry Donovan]

thanks for vid.

I had subaru with 3 broken angles...every time I got geometry correct the rear diff was nose down by an inch or more. Drove me nuts.

this explains that it is indeed correct.
(even a subaru with the diff nose clamped needs angles down)

[DanStokes]

Thinking this car needs a pinion snubber ala Mopar! Dang that thing moves a LOT.

Dan

[JeffMcKC]

They all move a lot on leaf springs. The shocks are pretty loose, but it gives you a idea of why so much angle is needed.

[oj]

Man, what a video! That thing went over center and is lifting the rear end! Is that your car?

[milner351]

I will certainly have that in mind when I set up the 8.8 in the back of the falcon, I still haven't welded the spring perches to the tubes.

[JeffMcKC]

Man, what a video! That thing went over center and is lifting the rear end! Is that your car?

Nope not my car....... LOL

I just thought some guys might gain from it. When people start throwing around numbers, that guy has what we would call 4* down in it. I always tell people with a automatic start with 4* or 5* down and work your way back, he does have a multi leaf spring and its not a split mono also if you look, the seperation has a lot to do with it on this style. Like I said just thought a dynamic picture of it helps as you notice the "Hit" then it backs off, is why you cant end up at 0* because it will invert at the start.

[Dan Barlow]

I'd hate to be the guy with the camera holding on for dear life, trying to capture that for all of us while you sat in the comfy seat having all the fun.

[Dignlif]

Thanks Jeff, that is an incredible visual explanation of what 1000 words didn't clarify for me.

[ls7gto]

so Jeff where would you start with a stick box, A-body 4 link with heim ends ( solids).

[Bamfster]

Man that climbs a bunch more than I thought it would, the visual definitely helps!

[JeffMcKC]

so Jeff where would you start with a stick box, A-body 4 link with heim ends ( solids).

3* down to start, back it off to 2* if its very stiff in the back, if not 2.5 is where I run mine and it hits pretty hard. Remember seperation will change it as the ride height changes

[TC]

3* down to start, back it off to 2* if its very stiff in the back, if not 2.5 is where I run mine and it hits pretty hard. Remember seperation will change it as the ride height changes

Thanks for the starting point.......

But I kind of thought this would be a "how to".............

[CDMBill]

It was.