In this diagram Vance's three cylinder diagram is shown first. It is

identical to Ansdale's

three cylinder diagram except Vance calls it the fire cycle and not

the

expansion

cycle. Vance shows the piston moving down while Ansdale shows the

chamber volume increasing

to a max. Same thing. So far so good. What is OK for Ansdale is OK

for

Vance and vice versa.

The third diagram is a two cylinder with the same sort of diagram

ideas.

Chamber volumes

are shown increasing and decreasing as a function of the output

shaft

angle.

I can't for the life of me figure out why Vance will accept Ansdale

analysis

of the three cylinder and not the same sort of analysis of the two

cylinder

and the rotary.

I'll say one thing about Vance. He forced me to clarify my thinking

on

this subject.

It is now severe clear.

Paul Lamar

Ops forgot the diagram again.

Paul Lamar

As you say - my diagram reflects piston position rather than max volume

up

as Ansdale used.
All three of his diagrams are correct - as far as they go. and if he had
used the proper cycle
based time line (wankel 270 degrees for the same "stroke" as 180 degrees

for

the pistuns)
as I did, he would have realised that the three cylinder is an exact

match,

where the 2 cylinder
is not.  There are three chambers in the Wankel (count them) and each is
carying a charge
of working fluid - a "stroke takes 270 degrees (as if it were geared) -

the

only reason that
you cannot equate that to three cylinders is because  it is counter to

your

desires. The 2
cylinder concept is almost more bogus than the one cylinder concept, and
probably only
has credibility since that was a concept they managed to sell to the

German

tax man.

Actually the scale looks close enough that you could cut and paste his 3
cylinder curve
over the Wankel curve. OK now can I quit? (the web page stays) Vance

If you quit I will mention your web page on my web page as being bogus :)

It is very simple once you see the light. It takes three wankel chambers

to equal

two piston cylinders to process the same amount of air in the same time.

It takes all three wankel chambers working together to fire once per rev.
It also takes both piston cylinders working together to fire once per rev.

The amount of air/fuel ingested and processed in a given time period is
intrinsic to the definition of HP.


Paul Lamar

Paul,

Please, for the rest of us post Vance's web site address.

Monty

http://members.tripod.com/~vjaqua

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Royce

http://www.geocities.com/vjaqua/


 
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