Canard met omloopmotor halverwege de romp

[ron van sommeren]

E ecco

contra rotating prop brushless - Page 71 - RC Groups

Nog twee Patrizio Bronzi kunstwerken:
blabla ... mit Verstellprop
contra rotating prop brushless - Page 7 - RC Groups
contra rotating prop brushless - Page 8 - RC Groups

First Flight Of DNA Video - Metacafe

contra rotating prop brushless - Page 26 - RC Groups
Hummingbird Aerobatic Aircraft Design

Variable pitch 'movie'
http://static.rcgroups.com/forums/attachments/3/0/1/8/t633374-56-thumb-variopitch1.gif