Stjohn's RV-7

1.5 hours.
Not sure what to call that thing. Cabin frame, roll bar, dunno. That upside-down U-shaped thingy that keeps your head from snapping off in a rollover. I made the cuts for the radii of the F-631D angles and got everything lined up for drilling. This was one of those things I needed to get absolutely right, so I spent a good long time measuring, double checking, measuring, clamping, and finally marking where the angles will go. I sort of used Mike Bullock’s method, where I clamp the roll bar to a straightedge clamped to match the angle of the front of the skin ears. Mine was a little different, in that I kept the roll bar on the whole time instead of using pieces of equivalent thickness, then marked the outline of where the angles lay. This will get me where I need to be for drilling, although i might try the other way when I get home, since I haven’t committed to any holes yet.