Caster (deg) = (180 / 3.1415) * [(camber1 - camber2) / (turnangle1 - turnangle2)]

Shortcut for Caster w/ 20* turns:

Caster = 1.432 x (camber1 - camber2)



I used above equation and came up w/ factor of 1.43 w/ 20* turns.

Is the different factor of 1.5 vs 1.43 just rounding difference?

 

There is a little rounding going on, and it's going to be extremely difficult in DIY practice to hit a sweep angle to within much less than ±0.5° anyway.

1.5 is the factor that the caster-camber gauges that are available through the circle track supply houses use with their (claimed) ±20° sweep.

The difference between 1.5 and 1.43 is less than 0.3° with a caster setting of around 6°, so it's not a huge factor. I'd pay more attention to making the two sides either identical or with achieving a specific caster split (right side more + than the left) to help keep the car from drifting to the right on crowned roads.


Norm

 

Yes I believe its just rounded for ease of measurement. Im thinking of buying an alignment tool but Im getting a bit tired of working/welding/building/designing/ I really need to go for a drive and put a smile on my face.

If anybody wants to buy the shock mounts hit me up. They look much better TIG welded. Ill take more pictures. But probably $150 for the mounts w/mounting hardware and aluminum spacer only because its a full day of work for me.

 

Amen on the driving. I know how it feels.

Few alignment pointers:

Verify turntable floats freely under load; old turntable may be worn out.
I settle suspension and jog wheels before collecting final data.
Verify final data is collected after everything is torqued; (very important).

 

Thread of the month? Can you finish this thread with a video? Great work!

 

sure! video of what though? LOL driving?

 

Sure! Take a few good turns, out and back? I don’t know, your car looks sweet in pictures, I bet it looks "bad ***" in video. I guess it does not really fit the thread (being a suspension build) but you have done some great work and thought it would complement your efforts. Thanks for sharing. Where did you find cromolly Hex bar?

 

chromoly hex bar I got off Amazon. You could parobably use a chromoly hex tie rod and drill for mounting holes. should still be plenty strong enough

 

Anxiously waiting for your test drive report.

 

Still playing with DIY alignment...LOL..got it pretty close though. taking it in tomorrow morning for a reputable shop. Just want to see how close I got it. First drive was awesome. Springs were a bit too soft even when stiffening the adjustment on the shock. Taking the 350's off today and putting on 450's. Should be just right! On a good note the whole system is very quiet. No more bushings no more bindings.