At 22:44 10 February 2018, Howard Banks wrote:
Wing warping -- end of those gaps -- if nobody has said it already.


At 19:38 10 February 2018, Andrzej Kobus wrote:
On Friday, February 9, 2018 at 11:11:43 PM UTC-5, Tony wrote:
Foka 4 and SH-1 also have "Sparless" Wings.

You are right but you can't really compare these designs with Diana
2.
These early designs had very light wing loading comparing to the
massive
wing loading allowed in Diana 2.


E.G. Haase had that on his HKS 3 which he won the WGC in 1958
with. The production version SHK had ailerons though.. The
Wright brothers had that on their designs and patented it, so
Glenn Curtis came up with ailerons, which resulted in a huge
lawsuit.

RO