@ Eric: I do not that think must fligen it right?sign1
if you want that you can rotate in both propellers separately it would be enough if the axis running through the last Probellers a hollow shaft of the front propeller
Hi Eric, thanks for the nice model.:thumb:
that would be here quite nicely
(if you do not even know what you dosign1)
http://www.luft46.com/henschel/hsp75.html