[Richard Farrant]

That is an 80 watt Charging Set, of wartime vintage and British built to a design by Stuart Turner (makers of marine engines, etc.). Some were built by Enfield Cycles and Douglas, the motorcycle makers.

I bought an unissued one many years ago at Duxford, made in 1944, in its crate with canvas cover, extension exhaust and silencer, also a small metal box with spare parts, ie valves, piston rings, gaskets all in grease with an instruction booklet. They are only 12 volt and i would think it very unlikely that they were converted to 24 volt. This higher voltage was obtained by the BSA 300watt 30 volt charging set, a copy of the Canadian Chorehorse.

My set bore inspection stenciling as shown with REME Far East Land Forces inspection and a further inspection at Donnington Ord. Depot in UK in 1979. Will find a photo of it.

Rating is 80 watts DC, 18 volts, 4.5 amp, while some earlysets have an additional output of AC current with a frequency of 300 cycles per second at 3000 rpm.