BB,
You've got a strong argument there! Here's the ancillary data that may help our poster:
Design by Johnny(sp?) Nunn of the Birmingham MAC in the U.K. from 1950
Kitted by Mercury
Wingspan: 24-1/2"
Wing Area: 125 sq. in.
Power: Frog 500, beam mounted
Spinner: 2"
Fuse Construction: hollow block lower shell with inset bearers glued in. 3/32" sides and planked top over formers
Tail: 1/8" sheet
Fin: 1/16" plywood
Wing: Sparless with 1/2" by 3/4" leading edge, 3/32" x 1-1/2" vee trailing edge, 1/8" ribs. Tissue covered. Internal controls