Regarding FF, I meant with respect to
stock intake system on the Renesis. For instance, will FF rate be equal
for same RPM, or higher on PP?
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Lynn Hanover
Sent: Monday, June 21, 2010 5:03
PM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Periphery
ported 13B
All this talk of additional power coupled with an easier intake
design has me thinking I should probably go this direction with my Renesis.
It’s still on the stand after rebuild.
I haven’t constructed the manifold yet anyway.
I assume fuel flow will be higher than
normal?
Higher than a similar piston engine of the
same HP. Slightly higher. About.666 the devils own fuel consumption at full
throttle best power. Looking for F/A in the 12s, and EGT under 1650 degrees.
However the rotary can run well far lean
of peak EGT. Even further with a high powered ignition system. The piston
engines cannot.
Is slide throttle best option?
I never understood what problem the slide
throttle was supposed to cure. Powersport had a butterfly right on the rotor
housing to cure a poor idle. Our Pports didn't like to idle at street car RPM
(650 RPM) but did well at 1,100 RPM, and sounded fine. That with a 48 IDA Weber
with 44MM chokes.
Only an unported (stock) Renesis has no
overlap. Peripheral porting a Renesis would get you some overlap, but nothing
like Peripheral porting a side port rotor housing where you have two peripheral
ports together..
On this dyno sheet there are readings at
as low an RPM as I have seen. This is a racing 12-A by Daryl Drummond. Best
power at 9,400 RPM and 244.7 HP on 36 MM chokes.
Look at the F/A and EGTs. Note the effort
to keep the oil temps down to 160 degrees.
This is a Bridgeported side port engine.
The 13B would have more everywhere just from more displacement. Injected maybe
5% more. A Periphery port maybe 10% more.
Need to search archives I guess.
Good info Lynn,
Thanks
Bryan