Date:         Wed, 2 Jan 2002 08:32:51 -0600
Reply-To:     Stan Wilder <wilden1@JUNO.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Stan Wilder <wilden1@JUNO.COM>
Subject:      Re: Boxer engines
Comments: To: andrew.grebneff@STONEBOW.OTAGO.AC.NZ
Content-Type: text/plain; charset=us-ascii

Sorry about that guys I thought the Tucker had a horozontally opposed
four cylender four cylinder like the corvair six and the VW four air
cooled.
On Wed, 2 Jan 2002 21:13:48 +1200 Andrew Grebneff
<andrew.grebneff@STONEBOW.OTAGO.AC.NZ> writes:
> >Anybody mention the Tucker automobile engine, a helicopter engine
> >conversion but boxer none the less.
> >
> >Stan
>
> Was that a boxer? Must/ve been a Lycoming or Continental?
>
> >Do any horizontal engines count here or do the cylinders have to be
> on
> >opposite sides of the crank?
> >   In the 50's John Deere tractors had two large horizontal
> cylinders
> side by side with the top of both pistons facing forward.  To start
> them
> you hand cranked an exposed flywheel on the side of the tractor.
>
> That would be a flat parallel twin, but not a boxer. The crank
> would
> have been behind the cylinders, not between them. Similar layout to
> most motorcycle twins. Toyota's rear-drive/4WD Estima/Previa/Tarago
> had a flat-four, but it was a normal I4 laid flat on its right
> side.
>
> A boxer MUST have a central crankshaft with paired cylinders, one
> of
> each pair on each side of the crank ie 180 degrees apart. Think of
> a
> boxer as a 180-degree V-engine (V-twin, V4, V6 etc), rather than a
> 60
> or 90-degree, ie with the two banks of cylinders pushed down flat.
>
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