off season pondering pinion angle

[Chris Hill]

Originally Posted by Don Fardie

Hi Larry,
I ended using a Go-Pro camera to record what was happening and found I had too much Pinion Angle. As you can see in the video going down the track I was running a negative angle, so I removed 2 deg. Also at launch it was really never going past 0 or postive degrees.
When using the Go-Pro editing software you can slow it way down and zero in on any area of concern within the lens area.

Awsome video! Now put a strobe light on it and see what happens.

[treessavoy]

Mother Mopar was the first to really science out the leaf spring suspension and they published their findings in their Chassis book.

Standard Leaf Springs 5 to 10 degrees nose down, 5-7 best

Leaf Link 3 to 5 degrees down

4 Link (double pivot) 2 degrees down

Ladder Bar (single pivot) 1 degree down

Note:Front Universal Joint Angle ( all suspensions ) 2.5 degrees or less

I run 6 degrees down on the Max Wedge with the real SS Springs. I'm going to switch to Cal traks this year and I figure it might be prudent to ask them about the angle used with the new springs and traction bars.

JimR

[Don Fardie]

Originally Posted by Chris Hill

Awsome video! Now put a strobe light on it and see what happens.

Not sure I could do that without triggering some Flashbacks!!!!!