Snip
Monty Roberts wrote

Someone said something about using both peripheral and side ports in
conjunction. I would be worried about the area of the ports getting too
large. This will kill your air velocity and your low end. You can't have
dynamic ram effect with no dynamic. The pumping losses would be reduced
though. Might work well on a turbo motor.

Monty

Have you see the size of the Leman 4 rotor ports Monty?
We don't need no stinking low end :-)

Paul Lamar

     Paul,
      Ask "Racing Beat" if they or anyone they know of
 have ever built and run a 13B with both side and
 peripheral intake ports. If so what the results were.

     Kelly Troyer

--
Dyke Delta/13B Rotary Power

Somebody may have tried it for race cars and rejected it
for lack of low speed torque reasons.

One must be careful when applying race car technology to aircraft 
engines. Cars need low speed torque while that is of little importance
to aircraft engines. What matters in aircraft engines is the HP generated
at max prop RPM. 

I think Jim would tell me the same thing. We are pretty much on our
own when it comes to tuning rotary engines. That doubly applies to 
turbo installations. Car turbo's are highly compromised by the need 
for low RPM torque and good throttle response.

Then of course there is the high duty cycle durability issue of aircraft
engines verses low duty cycle car engines. Car engines don't come 
close to the continuous HP requirements of an aircraft engine. That 
of course is an entirely different issue. Just thought I would 
mention it :-)

Paul Lamar

 
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