Re: FIFY
"[...] so the total power would be about 0.5 - 1kW."
That sounds about right for a 6bhp engine. In the 1960s - our radio club's HF "field day" 240vac generator used an Austin 7 engine mounted on a trolley. That would probably have been the later model of 10bhp. It supplied power for a KW2000A transceiver.