rcdude07
70cc twin V2
I went on Robarts site and the 121 retract is the one recomended for the plane we are building but like Robart does they really dont give you any solutions for solving the steering problem with the wheel extended and retracted.
Yeah, I Google image searched and saw a few YouTube videos.
I'm thinking 2 servos on separate channels, pull-pull on tail wheel with mixing to when tail is retract the rudder mixing is off. Of course you'll also have to mix it always to your gear switch.
I'd have to look st the plans again to see where a 4th servo could be placed as well as possible impact on elevator and rudder pushrods.