Thank you all gentlemen. This looks like another job for ‘Drawing detective’.
It’s clear to my eye that the ribs are at right angles to the spars “ala Tiger Moth’ (a typical DH why spend money). The Granger drawings and those in Moths, Majors and Minors show the ribs at an angle and not as in Dave’s excellent pictures. There is probably some commonality with the original Moth construction, clearly the ailerons are different as may be the rib spacing.

Dave, if there are any drawings of the wing plans in the manual would it be possible to scan them please (only one panel port or Stb).

Regards

John

I think that you have my email address.

I think that it would be an awful lot of trouble both with certification as well as construction wise as the ribs would have to be longer and totally different for minimal aerodynamic gain. Ok if you’re starting something from scratch.

John