Patent ID: 6318321
Filing Date: 2001-11-20
Classification: F01L

Abstract:
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; andengaging 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.