After looking at the pictures of Dick's prototype, I noticed that his spar C channel web continued lower than is depicted on the plans. I looked at the Mustang 2 plans, and it showed the spar extending lower than on the plans. I contacted Dick, but had trouble explaining the issue, so I just decided to make it the way I wanted. I rebuilt the spar C channel (again) to be more like the Mustang 2 design. His will add more material for bending in the area of maximum moment. (still probably overkill....but as has been noted, I am anal retentive... Anyway, this day was spent working up the new C channel
New C channel on left, doubler in middle, old channel on right
Showing the difference in the bottom of the C channel
