|
|
Neil,
I was told a lot of things about the Renesis
that have not been my experience with it. When I first started mine up, I had a
3 inch straight pipe on it. Don’t tell me something is louder! Not only
loud but angry! Scary sound! The Renesis is supposed to have a
couple hundred degrees lower EGT due to the side exhaust outlets. I have
only been able to get mine into the 1600s a couple of times. They run in
the 17s and 18s. I am using the stock Renesis exhaust manifold and the
probes are in the main body just in front of the inlet from the engine, maybe 2
inches from the engine. I think this affects the temp you get. Farther away
would be much lower. I couldn’t see your probes in the picture.
Speaking of which, what are the resistors
for? The P port intake manifold looks store bought, where did you get it?
Is that the Cozy Girrls front PSRU plate and mount? Where and what kind
of throttle body?
Bill
From: Rotary motors in aircraft
[mailto:flyrotary@lancaironline.net] On
Behalf Of Neil Unger
Sent: Tuesday, December 24, 2013
12:12 AM
To: Rotary
motors in aircraft
Subject: [FlyRotary] Re: Renesis
with 76 X 88 prop
Only the inlet is P ported, the exhaust is stock for I was told that a stock
renesis is quieter than the 13B. The side inlets were filled with some
very expensive epoxy. My probes are sited approx 2 to 3 inches from the
face of the exhaust port. My rotary racing bloke suggests that 1700
should be the upper limit although Tracy
suggests that mid 1800 is survivable. I believe that 25 BTDC is standard,
so will try up to 30 and see what improvement is evident I can get a
substantial drop in EGT with a very rich mix. So still reinventing the
wheel. Neil.
Sent: Tuesday, December 24,
2013 2:16 PM
Subject:
[FlyRotary] Re: Renesis with 76 X 88 prop
Neil,
Are both the intake and exhaust P
ported? How did you do it? How did you block off the side
irons? I doubt there is anything wrong with our timing or advance.
I have a stock Renesis and I get EGTs from 1725 to the middle 1800s.
How close to the engine are your probes?
Bill
From: Rotary motors
in aircraft [mailto:flyrotary@lancaironline.net]
On Behalf Of Neil Unger
Sent: Monday, December 23, 2013
6:40 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Renesis
with 76 X 88 prop
I have a P ported renesis and am seeing EGT up to 1850. Having talked with
various people with far more knowledge than myself, who suggest it may be that
the spark should be advanced up to around 30 BTDC. to reduce the EGT. Rather
than destroy the motor finding out, I am looking at getting the engine onto a
dyno to clarify the timing and EGT’s. Should be very interesting to
say the least. No one works here until the first half of Jan has passed
in this banana republic of OZ.
Sent: Tuesday, December 24,
2013 8:07 AM
Subject:
[FlyRotary] Re: Renesis with 76 X 88 prop
I've had server issues this week and
could not send this until today.
I actually have the RD1-C PSRU. (My Bad.)
Tracy
started selling these about 6-7 years ago for use with the Renesis.
The prop turns clockwise from the pilot's
seat view.
I normally see EGT's in the high 1750 F.
during full power takeoff and early climb. It will go above 1800 F. if the
mixture is real close to best power. I have my EM-2 set to warn me if the EGTs
go above 1800.
|
|