That looks like a good tool SLO. I was using something like that back in the 80's while the rig was still on the frame rack before the "real" alignment. Caster measurement is computed by camber change during that 20 degree swing.View attachment 1715308417 You boys are cracking me up! The drag coefficient has been removed the cat chasing is back on! Me being me I could not stand that I couldn't remember who makes my front end tool. Had to go to shop in my Jammie's and snap a pix for you guys. The end has a strong magnet and you just throw it on and follow the directions. Not very fancy but it works.
If your caster was zero, you would not have any camber change. A good way to visualize caster is to take a welding rod and bend it into a 90 degree angle say 4 inches from the end and hold the long end vertical (zero caster) and make it turn. The spindle stays level. Now tip it backward and visualize the short end being the spindle and turn it. Now you will see it move in an arc. (camber change)
Last edited: