Mailing List flyrotary@lancaironline.net Message #27006
From: jesse farr <jesse@jessfarr.com>
Subject: Re: [FlyRotary] Re: Displacement - Again? Timing of the Work
Date: Mon, 17 Oct 2005 17:50:40 -0400
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Now why did I not read this before my earlier comment; I even agree with most of what Doug says. I think. I like it. (yeah, six strokes/cylces, four cycles/strokes, a bunch of ignitions, all of that; yeah that 's the ticket, dazzle 'em with brilliance or baffle 'em with bs {basic science}.)
jofarr, soddy tn

----- Original Message ----- From: "Doug Mueller" <rotaryrx6@cox.net>

"The rotary engine is a 6 stroke internal combustion engine. I know, people
will probably start screaming at me for this so let's get into a little
explanation as to why and how typical mathematical formulas for piston
engines don't work.

2 stroke engine (up, down) - 1 complete crankshaft revolution.
4 stroke engine (up, down, up, down) - 2 complete crankshaft revolutions.
6 stroke (rotary) engine (up, down, up, down, up, down) - 3 complete
crankshaft (eccentric shaft) revolutions.

See a pattern? All of these engines though are still 4 cycle engines! They are
different stroke engines though so the amount of work they do per time is
very different. A 2 stroke engine does twice the work per amount of time that
a 4 stroke does. Don't believe me? Go race 2-80cc motorcycles, 1-2 stroke
and 1-4 stroke and see who wins! This must mean that the rotary engine
does the least amount of work per time than both other engine types. Yes it
does. But, unlike a piston engine, it uses 3 sides of it's piston (rotor) at a
time. In reality it makes no difference if we have 1 rotor with 3 usable faces or
6 rotors with 1 usable face each as in a piston engine.

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