Tom Smythe wrote:

Hi,

?).

My current plane of choice (not purchased yet) is the Murphy

Beaver

with

a 20B attached instead of the Russian radial. At present, we're

getting

ready to move out to the country from our suburban home, but

sometime in

the next year or so... ;-)

I've been reading and learning for a long time from the folks on

this

list - thank you all very much for your efforts and ideas.

Tom Smythe

I am a bit curious as to why you would opt for the 20B for the big

Murphy

instead
of the Russian radial. The M14 is a natural for that plane. It is

cheap

and

reliable
the match up is already worked out, the props for it are great for

that

application,
The power to weight ratio is hard to beat, and the sfc is not too

bad.

The

20B
is more of a racer choice. The Murphy is a truck , and a pretty darn

good

one
particularly with the M14 - Vance Jaqua

Vance I am surprised at you. Piston engines are grenades waiting to

happen.

The three rotor would last twice as long and be much cheaper to

overhaul.

Forget piston engines. They are dinosaurs.

Paul Lamar

Yeah your right Paul! Them M14 s are not very durable - when you run

them

on generator sets you have to ovehaul them after only 20,000 hours.
Vance Jaqua

Somebody got the units wrong in the translation from Russian to English.
That is 20,000 minutes :-)> Come on Vance I am really surprised at you.

You

have been on here for three years or more. Surely by now you understand
the structural and wear advantages of a rotary over any piston engine.

Do you still think the rotor reciprocates or what?

Paul Lamar

Why yes! as a matter of fact, this ex rocket scientist is still convinced
that the
rotary engine has a "stroke" (twice the offset of the eccentric - just like
any
other crankshaft). 

NO! WRONG! TOTALLY AND COMPLETELY NOT TRUE. 
Not like "any other crankshaft".

Since I would like to make my mathematical graphic
model true to scale for a 13B - does anyone know what that dimension
is, and also the radial dimension from the center of the rotor to the tip
seal running position. Those two dimensions will completely define
the cross section of the rotor and housing, and the displacement per
inch of rotor width. - Vance Jaqua

I thought so. I fail to understand how a rocket scientist can fail to
understand planetary motion when he sees it. I know it is 
subtle Vance but try harder to understand :-)>

Nothing.... and I repeat NOTHING IN A WANKEL RECIPROCATES.

Damn Vance you ARE stubborn.
I think you do this just to piss me off :-)>

Paul Lamar
 
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