I just wanted to announce that I have installed a Fold UP pusher on my Hawk Sky. I was unable to find anyone on the net that was talking about having done this, so I thought I would post so anyone wondering how to do this and IF it works well would know.
I used 6X4 blades. I had to clip about 1/4 inch off of the blades to keep them from hitting the Fuselage. I had to turn them around to face the front of the plane. Note that I had done the microjet upgrade already so this is a 3.2 MM shaft, and the spinner fit just fine. I also trimmed down the plywood firewall adapter that came with the microjet to reduce drag there.
There is a tendency on Fold UP pushers to go over center and not want to start back up without shaking the hell out of the plane when they are not moded.
I used a piece of light ply long enough to go from blade base to blade base with a hole centered to prevent this. The blades can't go farther than straight back.
Anyway. the results?
The Hawk sky now glides beautifully. I really haven't flown a REAL glider, but I can tell you that I did catch a mild thermal yesterday and I was able to fly the Halk Sky for nearly 30 minutes with no running of the motor.
That said... the power produced by this prop is not nearly as much as the Fixed APC that came with the Microjet upgrade, so the Fun factor of Really fast flight is gone. BUT the thing would go nearly vertical when gaining altitude . The real issue was not thrust but speed.
Any way I am tickled pink, and I strongly recommend doing this. I have been thinking of building a Glider Kit which I will eventually do..
I can now just build a 3D plane and skip the Glider for now.