Yes, I agree,  both units come in fairly light, I think.  I used a two
throat 4 injector TWM TB when I first started flying, but came to the
conclusion that the two 2" dia holes just did not create enough

velocity of

the mixture to stuff the chambers fully at 5000-6000 rpm.  Apparently

worked

fine for the guys turning 8000 and above in race cars.  It is

certainly a

nice, well made unit and for your 3 rotor will probably be just the

thing.

Onward to more (less weight that is) progress.

Ed Anderson

I chose the 44 mm diameter barrels, about 1 3/4".  Based on the drop in
manifold pressure at high rpm, I was thinking larger would be better.
But there are other factors, and until you can do a direct comparison,
same engine, same engine; preferably on a dyno, you don't know.
Al

It takes about thirty milli microseconds to realize that ANY pressure drop
across a throttle body at ANY RPM reduces the HP :) I am stunned. You guys MUST
be kidding!!!

Paul Lamar

Ed, I have a question for you about your manifold.
Were you planning on using bondo inside your manifold to smooth the walls out? The
reason why I ask is because the standing waves that we are concerned about can
cause the fuel air mix to actually reverse and go up stream at times. I was
wondering about the fuel being exposed to the bondo and disolving it and coming off
inside the manifold. Do you think there would be any cause for concern?
Doug Mueller
RX-6 13BT
N900DM
Henderson,NV

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