Finally i did it. I fit the Byron rotor on tail (OS 91 VRDF and Weston mini pipe), no stators, no shroud. It was a total waste of noise and smoke!

The jet begun the take off run like a heavy truck, 60 ft where not enough to reach a decent speed to airborne.

So i will try a pusher propeller, but here is difficult to find one for this engine (91 VRDF), does someone knows if this engine can run backward in order to use normal propellers in pusher configuration?

Thanks in advance.

Javier