The basic engine and generator on its base. It was a 1.5kW set running at 1000 rpm, the four-stroke engine developing 3bhp. The engine is petrol/paraffin,
the vaporiser being the large lump around the inlet port on the left/far side. Boulton & Paul were a Norwich based company, who became involved in aircraft production
and later became part of the Burt, Boulton & paul Group, specialists in timber.
Cross-section of the whole set. One unusual feature is the cam followers, which are very close in design to the Rolls-Royce Silver Ghost, especially
the mounting of the pivot box etc.
Picture of the barrel and piston. Note the combined oiling/priming cup and decompressor on the top left hand side. The piston size is not quoted in the article,
but a Boulton & Paul cement mixer engine is listed in the early 1950's with a CI piston and 3¼" bore.
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