The poor man’s way:
I used a hunting backpack frame from Amazon ($85.00)
I a few PVC pipes from the local hardware store
My girlfriend’s hula-hoop for the cage (I had to cut it to size, then I told her about it and got away with it after buying her a new one)
The idea was to overlap the PPG onto a PG harness.
The HACKER motor from Germany with the ESC was the expensive part of the machine. I actually flew it a few times. The PPG was a crude design but it worked. I only wished it had a bit more power. The idea was to catch dynamic ridge lift at my local site starting from the beach because there is no place at the top to layout a wing. I only needed to reach about 130’ from sea level to continue without the motor.
I had disabled two of the three settings on the server tester and only kept the manual mode.
The throttle was a server tester from Amazon ($14.00). I was powered by a pack of 4 AA rechargeable batteries to which I connected an adapter plug for a wall charger. I drilled two slots in the tester casing and pushed a velcro strip through them to make a loop for two fingers to hold it in the palm of my hand. It was actually pretty comfortable. I glued a section of a large elastic over the tester’s knob for a better thumb grip and it worked really well. One of the advantages was that I could dial the knob at any RPM and keep it there undisturbed. It was acting like a cruise-control setup. Accelerating or decelerating with thumb action was very smooth fast and precise.
Propeller from eBay ($35.00).
The final version of the motor holding surface was a vegetable white cutting board from ($35.00)
Note that there is no side arms as found on all PP frames. In any case, it does not beat the SP140 - it was built for a specific task and had to be super light.
The general idea:
The diagram:
Bill