Back on the Aluminum Mock Up. More Changes

I'm way behind on this platform. With the larger electric coax that flew ok in August 2012, I'm having issues keeping the 2 separate motors trimmed, which in turn, causes too much yaw. The larger platform will be gas powered or an even larger electric powered platform, given newer motors with less weight. However, I want to attempt "mast within a mast" and collective pitch, yet without double swash plates. Gearing will be gates pulley to 3 right angle gearbox.

Back on the rough aluminum mock up for the single rotor. Same platform concept as the coax, but the single mast was the concept that I used to patent the system. Still 2 semi rigid airframes that move within one another. I've decided to go with a different slide mech to control the airframes. Does the same as the other, but cuts weight.

Below, simple rough mock up frame for single mast. Clearly electric flying proto will be smaller. This larger mock up is just easier to work thru the issues on than smaller scale. Longitudinal lever from upper airframe will be the same, but again, different tilt control mech.

For practical purposes of testing spans of motion between airframes/points of binding, I opted for a simple spherical rod end/heim joint to use as a gimbal to join/manipulate both airframes in the mock up. Actual platform will have a more rigid gimbal. I've also decided that 3 points of attachment between the 2 airframes is better. Tweaking that on paper.