Airplane engines also have hemispherical combustion chambers but the pistons
are flat on top. they do put out one horsepower per cubic inch though..
John
----- Original Message -----
From: "Dave Casey" <dcasey@xxxxxxxxxxxxx>
To: <L-FORWARDLOOK@xxxxxxxxxxxxx>
Sent: Monday, September 29, 2003 12:05 AM
Subject: Re: [FWDLK] FIRST HEMI
> If you're talking about a two cycle engine, the Yamaha YZ series dirt bike
> engines have domed pistons and a domed chamber, though the dome is not as
> tall as that of a hemi. The spark plug is dead center above the piston,
and
> only slightly recessed.
>
> It would be cool to make modern designed aluminum heads for old engines
like
> those you described though.
>
> Dave Casey
> ----- Original Message -----
> From: "Bill Watson" <wwatson@xxxxxxxxx>
> To: <L-FORWARDLOOK@xxxxxxxxxxxxx>
> Sent: Monday, September 29, 2003 1:57 AM
> Subject: Re: [FWDLK] FIRST HEMI
>
>
> > I, for one, would like to see this hemi version of the sleeve-valve
> enigne.
> > It would be possible to produce a hemispherical combustion chamber in a
> > sleeve-valve engine as the engine has the valves on the sides of the
> > cylinder walls. It would be a simple matter of machining a domed
> cumbustion
> > chamber with domed pistons. All the drawings I have seen of Willys's
> > sleeve-valve engines show a recessed chamber for the spark plug, but
the
> > pistons are cupped, not domed. So these drawings do not show a hemi
> engine.
> >
> > However, the sleeve-valve engine was not a Willys design, who was a
> salesman
> > not an engineer,. It was designed by one Charles Knight with a
> > production-ready, patented design by 1907. He sold licences for his
> > patented engine and Willys gained the rights to produce and sell Knight
> > sleeve-engined cars when he acquired the Edwards Motor Car Co., Long
> Island,
> > New York in 1914 along with its Knight licence. Although Willys did
> > produce a V8 Knight sleeve-valve engine in the late teens, his next
> engine,
> > a six, was gained by acquiring the Sterling-Knight company in 1925. He
> > also acquired Stearns-Knight in 1926.
> >
> > The last Willys-Knight was built for 1933, just about the time the
Knight
> > patents expired. The Knight engine was more popular with expensive
> makes,
> > suich as Minerva and Mercedes, as well as Daimler who built their last
> > Knight-engined car in 1939.
> >
> > By the way, the first car to use a Knight sleeve-valve engine was the
> > British Daimler car in 1908. Russell of Toronto, Canada, acquired a
> license
> > in 1910, while some other American firms were Stoddard-Dayton (1911),
> > Columbia (1911) Atlas/Lyons (1912), R & V Knight, and Handley-Knight
> (1921),
> >
> > Walter Chrysler, though, never owned Willys-Overland. He was in charge
> of
> > the company during 1919-21 as a contractor of the banking syndicate that
> put
> > Willys into bankruptcy proceedings. To my knowledge Chrysler put no
money
> > into the Willys-Knight, instead working on improving the Overland and
> > developing the first Chrysler This Chrysler was not the Chrysler Model
B
> > that was introduced in 1924, but the Model A that was sold off at
auction
> in
> > 1921 to one William C. Durant. This Chrysler formed the basis for
> Durant's
> > Flint car.
> >
> > When Chrysler left Willys he never looked back at the Knight engine. He
> > stuck to "poppet" valve engines, producing in-line, side-valve versions.
> > The sleeve-valve design was a dead-end, being an oil burner, expensive
to
> > build and not an easy engine to produce more power.
> >
> > Bill
> > Vancouver, BC
> >
> >
> >
> >
> >
> > ----- Original Message -----
> > From: Paul J Dwaihy II
> > To: wwatson@xxxxxxxxx ; L-FORWARDLOOK@xxxxxxxxxxxxx
> > Sent: Sunday, September 28, 2003 4:29 PM
> > Subject: FIRST HEMI
> >
> >
> > Gents,
> > You may want to check your history of the HEMI a wee bit more.... An
> > American Company called Willys-Overland -Knight was the first American
> > Company to produce a HEMI. During a conversation with a fellow gear
head
> > in Auburn Mass. I (being from Detroit) learned something that history
> books
> > in the library confirmed. Essentially this Detroit "Motor City" boy
got
> > "spanked" by a guy from Auburn, Mass.!! Willys pretty much came up with
> the
> > idea and were the first to produce a "sleeve valved" version. Well
before
> > either Europe or Chrysler. W. P. Chrysler bought Willys ( and their
> > designs) and put his folks on them to "fine tune" the concept. Several
> > substandard versions later they got it right. But neither good ole'
W.P.
> > nor his company were the first in either category, he purchased the idea
> > from Willys. Several Willys-Overland-Knight HEMI's can still be found in
> > operation today! Do a wee bit of research...and use it to frustrate
the
> > overly confident ( like I was) HEMI pseudo effcianato's.
> > enjoy!
> > Paul from Detroit
> >
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