[SEL] The McVickerish Engine and video

[Judge Tommy Turner]

The one that is referred to as fully automatic is the first version.
This model is like Steve's and has the piston located under the engine
that activates the exhaust valve.  I've seen a few of these in a hopper
cooled version but most were tank cooled.  The later style has the valve
box on the side with the pushrod run from a cam on the crankshaft.  Most
all of these are hopper cooled.  Both are neat engines for sure.

Tommy Turner
Magnolia, KY



-----Original Message-----
From: sel-bounces at lists.stationary-engine.com
[mailto:sel-bounces at lists.stationary-engine.com] On Behalf Of Elden
DuRand
Sent: Wednesday, March 24, 2010 9:44 AM
To: The SEL email discussion list
Subject: Re: [SEL] The McVickerish Engine and video

Jim:

I watched the video and I see at least two variations the McVicker
engine went through.

The one I'm basing The McVickerish Engine on is what I think is the
original idea, covered in the patent, where there were no eccentrics,
cams or gears and the exhaust valve was operated exclusively by cylinder
overpressure.

I could be mistaken, though.  The earlier engine could be the one with
the eccentric (cam?) on the crankshaft where overpressure simply shoves
the pushrod up so the exhaust valve can operate after a power stroke and
McVicker could have called his camless version the "improved" model.

Take care - Elden