Pat,

The best description of the various ports is at:
http://www.rotaryengineillustrated.com/RE101pages/4-ports101.html

The second picture generates an overlay of various ports on to the base
diagram and you can compare the timing and area changes.

Good luck with the article,

Jeff



-----Original Message-----
From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On
Behalf Of Patrick Panzera
Sent: Monday, May 12, 2008 10:46 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Porting

Hey gang,

Has anyone done any radical porting on their 13b?
I need an image, even if it's from the web, of the most radical side porting
possible.

I'm doing an exhaustive article on the RotaMax engine for the next issue of
CONTACT! Magazine. One of the things they do a little differently is the use
of both side and peripheral ports. For low RPM compatibility, they use a
butterfly to shut off the peripheral port and run off just the side ports...
which they themselves are HUGE!

I need a comparison image to establish just what is considered a huge side
port for a Mazda engine.

Thanks!!!

Pat



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