George Moore wrote:

Paul,
   After looking at the Great New Rotary Web Site layout (I think you
did a really good job), I decided to make a visit to my favorite link,
Craig Pugsley's Rotary Engine page. With all of the discussion about
peripheral vs side ports lately, I found a really interesting diagram
and description under the "weird ideas" link, where Mazda experimented
by combining the two !
   They sealed off the inner side ports and used the outer side ports as
primary intakes and added larger peripheral ports which were used as
secondary intakes. This was on a 13B engine, but the type of fuel
delivery system wasn't noted.  It seems as though Mazda only got a 2 hp
increase with this concept, which was blamed on noise restriction (which
I took  to mean restrictive exhaust). The text goes on to explain that a
later experimenter got 350 hp @ the flywheel with this arrangement using
a Holley carburetor !
   Thought you might find this interesting.

I see nothing wrong with the idea for useing both. One might need
six or more injectors. You could run off the side ports until the
time came when  you needed max power... than you could run off all
six. Same goes for the exhaust. When the new side exhaust port 
engines come out next November we could see the first 400 HP
normally aspirated, two rotor, twelve port. 

Paul Lamar
 
The Aircraft Rotary Engine Newsletter.              Powered by Linux.

http://home.earthlink.net/~rotaryeng/            http://www.linux.org