Originally Posted by
morgoth
I've looked a bit closer at the sheet and I'm going to input my car tonight or tomorrow when I have some time.
I have a question about the shock angle. Do meassure it with the A arm level (parallel with a setup board) or at rideheight? I ask because the angle of the shock is changing during when the suspension is working.
And instead of using a protractor, you could also measure the distances between mounting location on the tower, the hingepin of the A arm and the mounting location in the A arm.
Then input the distance on this website
http://ostermiller.org/calc/triangle.html and you'll get the angles. I think that could be more accurate than eyeballing it with a protractor in front of the car.
Thanks for the link, will add that to the spreadsheet.
Measure at ride height. One thing I've learned is that all the cars I have except the Kyosho MP7.5 have shock angles in 5º increments. Each hole in the shock tower is 5º apart and the same with the arm holes. Typically 20-25-30 and so on.
I did this way, measure distance between right and left upper shock mounting screws in the shock tower and then between lower shock mounting screws in the arms at ride height, subtract the first measurement from the distance between lower shock screws and input that in the page (it's our lower side), then measure shock length at ride height and input that (the triangle's side), then from 90º subtract the result from the side angle et voilà.
With the protractor I would lay it with the 0 facing the left upper shock mounting point and the center reticle on top of the left shock lower mounting screw, then eyeballed the measurement. While the accuracy was low, the repeatability was good.