George Lendich wrote:

Paul,
The biggest primary port size(so far) is the 20B.
This is a little less in area size of 1.5"

How well 1.5" will feed the PP and up to what RPM  - I don't know!
But it should work at least up to 4,000 RPM, as indicated when the secondary cuts in.

The Velocity will increase of course, which would help with inlet flow past 4,000 RPM.

An interesting thing Francois mentioned was that for best BSFC he uses the primary only for fuel delivery.

There are no assumptions on total PP area required, only some more info.
George ( down under)

Are you adding the primary and secondary ports together? You should be.
P-ports have one tube. Side ports have two or more tubes.
One large tube has less internal skin friction drag than two or more smaller tubes
of the same area.

Small diameter tubes fill the intake chamber better at low RPM than large
tubes. That is why Mazda uses multiple small diameter tubes for cars. We are 
not using the Mazda engine to power cars in case you haven't noticed. We don't
need low RPM engine torque! This is a recording. 

The most powerful wankel engine will have both peripheral and two side ports of the
largest possible total area given the restrictions on port timing.

You better think!!!! Think what your doing to me :)  Sheesssss!!!!!

Paul Lamar
 
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