Norwich Aviation Museum has a very early Banshee, not sure what the motor is though.
I'm sure some of them had little turbines, but I might be getting muddled up with the Vindicator?
More recently Meggit were using triumph 955i triple engines, tuned at Hinkley to give 130bhp.
An old RC model flying buddy of mine worked for Meggit and travelled the world selling drones to various militaries, including a sprinkling of banana republics! He had some salty old stories.
They used to spy on modellers for ideas and sometimes headhunt the clever ones. It was all a bit cloak and dagger.
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