MONOSOUPAPE CAMS
MONOSOUPAPE CAMS
| The top picture is the cam and lifter housing with the cam sitting upside down on the edge of the housing. Notice that there are three cam lobes. Each lobe actuates only three lifters, each 120 degrees apart, (or every third lifter). That means, in order for each set of three lifters to operate, their sleeves have to be at the same level around the circumference of the housing as their cam lobe. By looking closely and comparing the positions of the rollers and sleeves, you can see the different levels. In the background you can see the front crankcase cover with three planetary gears. An inside closeup of the cover is at the bottom of the page. In the picture just below, the cam is in its proper position among the lifters. The ring gear is at the front of the engine. The end of the crankshaft comes up through the bearings in the cam and holds a stationary gear. When the front cover is in place, the planetary gears inter-connect the ring and crank gears. As the engine rotates around the crankshaft, the cam is turned in the same direction but at half the speed. It may sound complicated but it is actually very simple and effective. |
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Copyright © 2000 Tazbat Publishing Most recent update 03.03.2004 |