Today I tested the clearance of the prop against the spinner, by rotating the prop between full fine pitch and full coarse pitch. The clearance was good, and never closer than about 1/8th of and inch. I
followed the plans and clamped two boards to either side of the prop and rotated using the boards as leverage. Since it’s hard to twist the prop and simultaneously observe the gaps around the prop, my son Julian helped me verify everything was good by taking pictures.
With that task done, I final drilled holes for the spinner cutouts and then riveted them into place.
