Originally Posted by
BCRider
It's not the fore-aft angles you're checking for but a side to side twist in the main triangle. As in when viewed from the front the head tube isn't lined up perfectly parallel with the seat tube and if this was the case the forks would be angled to one side.
Right, but I since the headset goes all the way around the head tube I still think using a level will be iffy, unless the headset is the same diameter top and bottom (unless I'm misunderstanding what you're saying). Headset is a CK btw.
Originally Posted by
BCRider
While you're at it I would take the fork out and check that too. A side impact could easily bend both legs to one side equally. For this you'd want to remove the fork and using a straight edge and a parallel spacer of some sort or a known flat surface set the steer tube on the spacer with one leg down. Use a triangle to ensure the dropouts are spaced dead vertical over each other and then measure from the surface or straight edge to the dropouts. Flip the fork 180 and check again. The measurements should match or the legs are bent to the side.
Good thought. It's a carbon fork so I would think it would break (or crack) or snap back, but will check it out also.