Harley Davidson 1911 Model 7D

1911 model 7D was the second generation of the two cylinders bikes and the V twin engine with the new camshaft driven intake valves, its the first year of the vertical fins on Harley-Davidson engines, the engine equipped with Bosch DU magneto ignition system - the only option on the 7D model, its the first time the oil tank located under the seat , note that the manual oil pump is built in parallel to the seat downtube, the pump inject fresh oil directly to the cam cover bottom, main crank bearing and to the base of the front cylinder...the right side cover hide 4 gears which pass the motion to the magneto, the bike is still use the leather belt with tension control, matching numbers appear on cases and original fitted cylinders it maybe the first time a matching belly numbers appear to prove factory fit of main bearings racers...

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