Subject: Wankel engine displacement
From: Rotary Engine
Date: 4/12/2007, 11:20 PM
To: AARotary Engine


    Okay, hold on now.

    What Adam just very nicely explained is what I've been saying all
    along. Paul, you confused me with those charts and the idea that
    there is more than one intake stroke.

    Up until that point, I was holding fast to exactly what Adam just said.

    I know in my spreadsheet the volumetric flow is absolutely correct,
    based on the 80 ci (1300 cc).

    I don't think anyone will dispute that. Still, this discussion shows
    just how confused things can get.

    Regards,

    Gordon.

You will figure it out eventually. I am worn out on this subject.

Paul Lamar ...No rotor no motor.
Hi Gordon,

I know this will sound silly but make some paper cutouts of the housing
and the rotor ( if you have this hardware handy all the better to use).
On a table top, put them together and make them work. Be very careful
with the orientation because you will not have the advantage of the
timing gear from the housing to position your rotor cutout. Your
previous posts indicate this rotational relationship of the rotor as it
simultaneously orbits the e-shaft is missing from your overall concept.
Make a timeline of e-shaft rotation and record what you see as the
e-shaft position for each of the 4 cycles of the complete
combustion event.  Take the rotor around carefully including the e-shaft
orbit for one complete e- shaft rotation and you will understand what
Paul has been saying.  A little over a year ago Paul and Vance were
going at each other with this same "discussion" and I had to do the
paper cutouts myself to be convinced of Paul's position. Try it, the
only downside is your wife will think you've gone off the deep
end! There is a possible alternative way to do this but you'll need to
enlist some help from the group. I remember seeing a graphic of the
rotary engine somewhere (Paul may still have the website) and it clearly
showed the rotational and orbital relationship and all 4 combustion
process cycles. Unfortunately it all goes by so fast that it would be
useless for our purpose here, but someone on here may have a way to slow
the animation down. I believe this graphic even accurately showed the
timing gear in the housing. This would provide a visual conclusion as to
exactly how many times a rotary "inhales" for each 360 deg e-shaft (aka.
crankshaft) revolution----This is the way Andale and the world view
engines. (Remember a piston-4 cycle "inhales" only on every other
chamber sweep) Can anyone help find and slow down that animation for all
of us? Paul, this seems like a worthy addition to the website as the
topic comes up semi-annually.                 Dave M

Yes I will work on it when I get back from Sun n Fun. Thanks

Paul Lamar ...No rotor no motor.

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