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Hi,Ed...(and Rusty). I woould still
like to finish the carburetor manifold, mostly because of the challenge,
plus I spent so much time, money and effort engineering it. I would like to see
if it works. I can just mount it and fire it up with a plastic marine gas tank
and a hose to fire it up and see what kind of rpm's I get from it. That
way, I can have the EFI system back on-line in an hour or less. Most
likely, however the EFI will remain, as I won't have to fabricate a carb heat
setup, or provide a mixture lever. I can just go fly and enjoy my
airplane. Hmmm.....maybe the carburetor museum isn't such a bad idea
afterall? Paul Conner
----- Original Message -----
Sent: Thursday, March 24, 2005 8:15
PM
Subject: [FlyRotary] Re: a better running
rotary
Hey, Paul
Great to hear the good news. That is the
one thing that folks on this list made it such a great list to be on. We
can share our mistakes/lessons learned without fear of ridicule (well,
maybe some good natured ridicule {:>)). I have posted things that
were a bit embarrassing (and/or stupid if you prefer) such as my 12 miles
engine out glide - with a full 18 gallon take just the turn of a handle
away. Why? because I knew with absoluteness that the other than still
had 3 gallons in it. It did, but the fuel feed had become disconnected and the
engine could not reach the fuel. So, you hooking up two connections to
one sensor pales in comparison in my opinion.
Does this mean you are sticking with EFI (in
spite of a custom mounting plate?). I hope you do because I think in the
long run you will really come to "love" EFI.
Keep flying
Ed A
----- Original Message -----
Sent: Friday, March 25, 2005 12:57
PM
Subject: [FlyRotary] a better running
rotary
I went out to the airport today and ran the
engine up, did a quick full power runup and then went to the runway and took
off and landed (back on the same runway). Never ran better...matter of
fact never ran this well. What, might we ask made the dramatic
improvement? I call it reverse stupidity. A couple of days ago,
I went to a page on my MicroTech ECU handheld programmer that I had not
previously viewed. It showed rpm and water temp. My engine monitor showed a
water temp of 160 degrees F. The ECU monitor showed a water temp
of -24 degrees C. Not even close. To make a long story short, I had wired
two monitors to one water temp sending unit. After running the engine, the
ECU water temp climbed from -24C all the way up to -12C. I
disconnected the wire that went to the engine monitor, and the ECU water
temp immediately went up to 60C. Since the ECU varies fuel and timing
based on water temperatures, it was unable to do it's job correctly
with inaccurate water temp inputs. The cold start enrichment also was
not functioning, as the engine map's were supposed to start reducing mixture
levels after reaching 50 degrees C. It never saw those numbers, so it
could not function properly. Now, with the proper water temp inputs,
it runs GREAT !!! Cold start, warm up, idle through WOT is smooth as
silk. To think of all the time I wasted trying to program injector
open times, etc on an ECU that was receiving improper water temp
information.
I should have known
better than to connect two monitors to one sending unit, but I did it
anyway. Just hoping others can learn from my mistake instead of making their
own.
Just when I had
a custom made mounting plate made for the HA-6 carburetor I just purchased,
the thing has to go and run like a swiss watch. Murphy wins
again. Take care. Paul
Conner
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