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Date:         Fri, 20 Jun 2003 01:42:08 -0500
Reply-To:     mike boland <westy@MVBOLAND.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         mike boland <westy@MVBOLAND.COM>
Subject:      Re: Off topic - Aircraft Engine
Comments: To: John Rodgers <j_rodgers@CHARTER.NET>
In-Reply-To:  <3EF2A836.2030103@charter.net>
Content-Type: text/plain; charset="us-ascii"; format=flowed

opps for got the link

http://www.dynacam.com/

At 01:22 AM 6/20/2003 -0500, John Rodgers wrote: >Perhaps "waffled" is not the correct description. > >Imagine a washer with a wave in it. Several "ups", several "downs" . A >bolt through such a washer, would be like the crankshaft in relation to >the "waffle-plate" or I suppose, swash plate. A lifter is to the cam >lobe in an engine, as the swashplate is to the slotted piston. However, >whereas the lifter rides on the cam lobe, in this case the swashplate >fits into a slot in the side of a cylinder -- or piston as it were. >Envision if you would, some sort of swash plate stuck sideways nto a >piston ring groove As the swash plate slides in the piston groove, it >will tend to move the piston up and down. > >Now envision a metal cylinder - actually a double ended piston, but >right in the middle - equidistant from both ends of the piston, a slot, >into which the swashplate fits. As this swashplate slides through that >slot, the double ended piston will move back and forth as it rides on >the lobes of the swashplate. > >Now envision a row of these pistons arranged in a circle so that the >long axis of the cylinder is parallel to the crankshaft, and the >swashplate is perpendicular to the shaft and the cylinder/pistons, and >the swashplate is fitted into the slot in the side of each cylinder. The >motion of the swashplate through the slots will make all the pistons >move back and forth but parallel to the crankshaft. > >To make an engine, applying fuel and spark to the ends of the cylinders >will instead drive the plate and thus rotate the crankshaft. > >This shaft, piston, swashplate arrangement is found in many pumps. > >Hope this helps. > >John Rodgers >88 gL driver > >THX0001@aol.com wrote: > >>In a message dated 6/20/03 12:14:21 AM, j_rodgers@CHARTER.NET writes: >> >><< The plate was waffled up and down so that if >>the plate was in a slot, and the crank turned, the plate moved through >>the slot and the waffle made the slotted peice move back and forth . >> >> >>John, >> >>I'm trying my damnedest to visualize this mechanism. Are you talking about >>some form of a swash plate linkage? >> >>George >> >>


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