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Charlie,
Take off seems to be best at 12. Have not tried leaning at full
power. Still early days, but pulling power back is the only way so far to
lower the EGT. Cooked the first EGT probe, second is not well, so have
ordered a third set. At $60 each I am not really learning much except that
freight from the states is very dear. If this keeps up may try and go
stock ,Mazda to see it they survive better. Waiting for a replacement chip
from Tracy to fix computer A, so cannot fly until that arrives Neil.
Sent: Tuesday, December 24, 2013 12:10 PM
Subject: [FlyRotary] Re: Renesis with 76 X 88 prop
How rich are you running? If it's really rich, you
may have fuel burning in the exhaust even if timing is correct. Can you lean at
near full power & get a drop in egt without a significant loss of
power?
Also, even conventional a/c engines see egt's all over the map
from engine to engine, due to timing, mixture, and even position of the probes
(distance from port, exposure to exhaust stream, etc) and variation in the
probes themselves.
Of course, with the P-port engine, you might just be
making more power. :-)
Charlie
On 12/23/2013 5:39 PM, Neil Unger
wrote:
Dennis,
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.
Bill
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.
Dennis H.
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