RE: adding ailerons
chuck mary,
Attached please find the photos of the ailerons on the JMD Models kit.
This plane has a little larger span than I remembered: it is 78".
To orient you, one pic shows the ail closeup, the other a 1/2 wing panel.
The length of the one wing panel is 35 1/2". The span of the aileron is 13". The chord of the wing is 9 3/8". The chord of the aileron at its widest point is 3 1/8". The relatively short aileron then has a chord of exactly 1/3 that of the wing. This is relatively large, but the ailerons are pretty short on the Silvaire.
Hope this helps.
Regards,
Randy Little