----- Original Message -----
Sent: Sunday, February 03, 2008 4:18
PM
Subject: [FlyRotary] More Progress
I finally got the engine to
start everytime, with Tracy's help yesterday afternoon. You may
remember that I am the one who couldn't get my Renesis started. It just
flooded. Finally sent the EC-2 back to Tracy and he found a capacitor
missing on the unit that has to be there for the Renesis CAS.
When I got it back, with much trouble I was able
to get it started, but it was hit and miss. Sometimes I would drain the
battery a time or 2, foul the plugs, but when it ran, it ran pretty
well. Yesterday, after a couple of weeks of screwing with this thing, I
called Tracy again, discribing the situation and trying my best to be
professional. Tracy said that he found a new "glitch". Seems that
only on the Renesis, with the 2 wire CAS, when starting, there is so much
electrical noise from the starter and the solenoids, that on SOME airplanes
this noise scrambles the timing function and it is all over the place.
When it happened to scramble at the correct timing, I could
start it, and when the starter turned off, no noise and the EC-2 would
time correctly. Maddening! and that is being polite. It would be
interesting to find out how Tracy found the problem and tracked it down and
came up with a simple fix. Oh yeah. The fix! Went down to
Radio Shack, bought a 1000 Ohm resister, 1/2 watt, installed it across the
wires going to to the CAS. (I installed mine inside Bob's D sub
connector)
I pulled the plane out and it
started on the 2nd blade! I charged the battery some, turned it off and
it started again, and again. Nice feeling! Tracy of course will be
the last word on this. Thanks again Tracy! That's why we call it
Experimental! The engine sounds like a car and not too loud.
Also, B controller wouldn't run. Copyed A to B and it started
running too. 3 or 4 shots of primer at 35 degrees. No
cold start switch. Mixture at 2:00. No primer when
warm.
As I mentioned, It's running
pretty well, but there is a mis, and it seems to be at all RPMs. I had
it before the latest fix too. Obviously I can't fly with it this way and
the Auto tune function doesn't work because the RPM is not steady enough above
2500 rpm. Any thoughts on why I have this mis and what the
solution might be? I assume that it is an ignition problem rather
than fuel, but my engine knowledge is pretty basic. Also,
I built my own intake manifold of 17.5 inches. Could this be
part of it, due to pressure waves, etc. One thing I
haven't looked at is switching the leading and
trailing coils. I did it, to see if it would still run on B
controller, but not to see if the mis would stop. I didn'nt notice
it stopping if it did. Sure do like the heat from the automobile heater
core. I will be increasing the outlet eyeball size.
Got rid of all my leaks.
This is so nice! Running for a while at 2600 rpm had 160 water and 165
oil @ 91 psi. I will be taking the fuel system apart so I can drill and
safety wire everything. Cool air ducted to them. The Fuel pumps
are very noisy and my ANR headsets don't cancel that frequency out
much. Are there quieter pumps out there? I will try to sound
deaden the back of the pump mount and the back of the fire wall.
Flo-scan fuel flow unit not working. EGTs not working. Love the
mixture moniter function. Filled the right tank for the first time and
switched tanks. Fuel pressure dropped to about 25 psi and then when back
to 32 with out a hick-up. I have the Sube fuel pinhole bypass. All
for now. I look forward to your thoughts. Someone out there knows
about engine mis.
Don Walker
RV-8 Renesis
N113 Bravo
Romeo