Patent ID: 7665436

Claim:
A camshaft timing belt system for an air cooled Twin Cam V-Twin motorcycle engine with a front cylinder camshaft, a rear cylinder camshaft and a crankshaft having an end with an alignment flat and a threaded aperture, the system comprising: a spider having a spindle with an aperture adapted to receive the rear cylinder camshaft for affixed rotation therewith and a hub formed integrally with the spindle, the hub having a plurality of slotted apertures and timing marks forming a timing scale; a camshaft pulley having an aperture receiving the spindle, a face having holes coinciding with the slotted apertures, and a toothed portion; fasteners extending through the spider hub slotted apertures and the camshaft pulley face holes fixedly securing the camshaft pulley to the spider, wherein the spider can be rotated relative to the camshaft pulley with the fasteners loosened; a crankshaft pulley having a toothed portion and an aperture adapted to receive the crankshaft for affixed rotation therewith, the aperture having an alignment flat adapted to abut the crankshaft flat for angularly aligning crankshaft pulley with the crankshaft alignment flat; a timing belt having teeth meshing with the toothed portions of the camshaft pulley and the crankshaft pulley connecting the pulleys together for mutual synchronized rotation; and a support plate adapted to be secured to the motorcycle engine separating a dry timing chest housing the spider, camshaft pulley, crankshaft pulley and timing belt from an oil wet crankcase cavity of the motorcycle engine.