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amanco twin flywheel hit and miss stationary petrol engine at sellinge steam show made in america used for farm use pumping water driving farm machinery no spark plug two points in combustion chamber wen they open you get a spark which is supplied by a magneto the flywheel you can see facing you in video has a centrifugal governor in it   to see more videos click link   Motorcycles and steam engines - YouTube

hit and miss twin flywheel petrol engine engine made by nelson brothers little jumbo made at saginaw michigan america in 1911 these engines were regulated by a centrifugal governor so when it slowed down it would trigger a spark these engines never had a spark plug they had two points inside the combustion chamber they have an electric charge running through them they are touching when they move apart you get a spark which ignites the compressed air fuel mixture  to see more videos click link    Motorcycles and steam engines - YouTube