Retrieved December 19, 2012. Such as the prototypes and the 1st fifty or so examples manufactured, it had one-cylinder engine with atmospheric intake valve; that is definitely, when the piston went down to the ingestion stroke, the valve was sucked open up and when it started out back up, the valve was compressed shut. ^Harley-Davidson Fiscal Provi… Read More

By 1937, all Harley-Davidson flathead engines were Outfitted with dry-sump oil recirculation methods much like the one particular launched from the "Knucklehead" OHV engine.six. Harley-Davidson reserves the correct to amend the terms of your Marketing or to withdraw the Marketing Anytime if situation further than its Manage make this unavoidable, o… Read More