Harley Davidson Magneto Single Engine 1909

The next generation of engines from Harley-Davidson - 30 ci. 4+ HP Single cylinder for the model 5, still based on the auto intake valve which open by the suction created by the piston down motion, the one piece cylinder / head cast is different in size, fins shape and number, the intake vane is horizontal and this is for the new Schebler Carburetor, the new and more advanced carb with chock arrangement and wider tuning options, 1909 marks the fifth year of production provided few options for the bike config like electric battery and coil or magneto based ignition system made by Bosch. the following engine is the magneto version and different from the battery coil version by the oval side cover which holds the gearing from the crank to the magneto, evolution from 1905 can be seen with few changes like the oil in relocation, displaced cylinder base and a new and different engine mounting arrangement...

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