I had a 32 ? Willis with a Sheve Valve engine and although the scrap iron
dealer was paying 3 cents a pound for iron he would only give me 2 cents
a pound for a Willis Overland Knight with a shelve valve engine.
You should actually have one and the owners manual and you can stop
talking through your imagination.

Stan Wilder

On Thu, 18 Jul 2002 20:09:00 -0400 SpaceKommander <jboldway@BEE.NET>
writes:
> I'm angry. I filled my tank with water and tried to run it to get
> some fuel
> economy benefits but the damn engine quit after only a few seconds
> on
> running on tap water. Who thought up this idea?
> Seriously, in 15-20 years there will be a change in engine design as
> people
> realize designs from the 1930s are the best way to assemble and run
> engines. Two words - sleeve valve. Everybody is familiar with poppet
> valves
> which get roasted in exhaust gasses. WWII engines such as Centaurus
> and
> Perseus and Knight auto engines of the 1930's used something called
> sleeve
> valves. It's waaaay too complicated to go in to but just say the
> poppet
> tulip shaped valves which bang in to the heads were eliminated and
> a
> circular sleeve surrounding the cylinder with ports machined in the
> sleeve
> and cylinder did the job. Much better efficiency than any poppet
> valve
> engine could ever give, and much more power. Steel and aluminum
> Sleeve
> valve engines are complicated and extraordinarily expensive.
> However,
> ceramics make the sleeve valve engine seem like a likely candidate
> for any
> new engine development as they can operate at much higher engine
> temperatures than any poppet valve engine could ever stand without
> introducing failed valve heads or detonation due to excessive
> exhaust valve
> temperatures - there are no "valves!" - and no shock of valves
> slamming on
> to cylinder head - a smooth sliding action. Ceramics don't suffer
> the
> thermal expansion problems. Plus some things like a steel connecting
> rod
> surrounded by a ceramic which puts the steel under constant stress
> loading
> can be made using concepts of SPG style pressed together cranks and
> a one
> piece connecting rod of lightness and strength. Imagine an engine
> without a
> complicated cooling system. Ceramic sleeve valve engines also allow
> things
> such as no valve springs and operating at temperatures far in excess
> of
> anything currently running as the thermal distribution is much more
> even -
> no super hot exhaust valves. Sleeves that contact the cylinders most
> of the
> time or form a "port" to relieve exhaust without much thermal
> transfer.
> That, folks, is the future of gasoline internal combustion engines.
> We
> still have the 14.7/1 air/gas ratio, but operating at higher
> temperatures
> gives more power.
>
> Next is the conspiracy to repress the soda carburetor.
>

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