I saw Hanno fly at various TOC- his concept of the "right plane"
was vastly superior to th US stuff- yet NONE of the guys even tried his approach.
His Dalotel (s) was really fudged but had super low wing loading
I used the French presentation drawingsfor my models of it those plus writings from Mssrs Dalotel and pics.
The plane really flew as well as anything else on the market but the pattern boys hated anything scale
(could NOT be any good)
The EXTRA with less than 10% deviance- same thing -not apattern model
Here is One Jim Villwock did - Jim races Unlimited Hydros too. The Partner is a late type pattern plane - this one by afriend's son in England