Method of modifying motorcycle engine cam drive
AssigneeS & S Cycle, Inc.
InventorsSteven A. Kensok, Scott A. Sjoval, Dan Kinsey, Tim Culver
Life of this patent
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Abstract
A method of modifying the cam drive arrangement of a motorcycle engine. The method includes providing an existing cam gear arrangement having a crankshaft sprocket connected to a primary camshaft sprocket with a chain, removing the chain, replacing each of the sprockets with a crankshaft gear and primary camshaft gear respectively, and engaging teeth of the gears so the crankshaft gear drives the primary camshaft gear directly. A specific method for modifying a TWIN CAM 88 engine, made by Harley-Davidson, according to this method, is also described.
Claims10
A method of modifying a cam drive arrangement of a motorcycle engine, including an existing cam drive arrangement having a crankshaft sprocket, a primary camshaft sprocket, and first and second secondary camshaft sprockets, with the crankshaft and primary camshaft sprockets connected to each other with a first chain, and a secondary sprockets connected to each other with a second chain;
- the method comprising the steps of:
- removing the chains;
- replacing each of the sprockets with a crankshaft gear, a primary camshaft gear, and first and second secondary camshaft gears, respectively;
- and
- engaging teeth of the crankshaft gear and primary gear together, and of the secondary gears together, so that the crankshaft gear drives the primary gear directly, the primary gear and first secondary gear being coaxially mounted and the first secondary gear drives the second directly.
Dependencies are inferred from the claim text.