Yeah but he had pictures so he wins

Have you guys actually used that method with the lasers? I tried it once and it seemed like the laser dot was too big to really get an accurate measurement, and there was some other issue that I can't remember. I think I remember thinking it was something that could be overcome but would take some up front work. Maybe I'll try it again.

 

depends on the laser I suppose. The laser doesn't have to be dead exact just fairly close as 1/2" difference (left/right) over 94.5" of wheelbase would equate to .005"? What you are looking for is that they are both pointed in the right direction when measuring thrust.

 

I know this thread is a bit old, but thought you might like to see my cheap solution.

Cheap string setup