Quote:
Originally Posted by gearhead
John....ehh...I'm not following the straight edge on top of the tube concept...more thinking...maybe you are saying measure the gap between the bottom of the straight edge and the tube. Yes, that would be a measure of the arch, or lack there of.
I'm towing just a bit nose high. Maybe a quarter of a bubble.
I think if I would have rotated more often I would have never noticed.
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Yup, the distance from the straight edge to the opposite spring shackle is essentially the "axle arch". You'd need to measure that "height", measure the distance from end to end, divide by 2, use "algebra" (that math we never really liked) to determine the angle of the arch based on the straight edge height measurement and axle length. But, yeah, if the distance from the straight edge to the shackle is the same on both axles, the arch is the same on both axles.