----- Original Message -----
Sent: Sunday, August 10, 2003 12:50
AM
Subject: [FlyRotary] Engine tuning, part
1
Greetings,
I made an attempt at
tuning the engine today. I'll continue to beat my head against the desk
as you read my log entry. Thud, thud, thud...
Rusty
PS- I'm going to try
unwrapping some of the trigger wire on the tiny tach tomorrow, so that I only
have 4 turns as the instructions suggest. It will either help, or
not. I'm pretty disgusted about this whole tach thing.
Rusty, to
make you feel a bit better while you beat your head against the wall.
After I got my EC2 reprogrammed for some of the new added features a year or
so a go, I reinstalled it laying on my back with head under the instrument
panel. After much threshing about getting the board past the vacuum and
electrical lines, I put the retaining screws in. For the next several
days, I couldn't get the engine to run right, too lean at high rpm and too
much fuel at low rpm (sound familar?).
Well, got on the phone to Tracy, who after some
discussion asked if my manifold pressure lines were attached. I assured
him they were as I had pushed both through the holes in the case until they
were snuggly attached. Well, problem continued despite eveything thing I
tried. Since the problem was the same on either processor, I concluded
that either I had two bad manifold pressure sensors or something had gone amis
when Tracy had reprogramed the EC2. I crawled up under the instrument
panel and confirmed to Tracy that the manifold hoses were still attached,
even tugged on them to make certain they were on the barbs.
Finally, I decided that I had to send the unit back to
Tracy as I was getting nowhere. So again flat on my back up under the
instrument panel, I loosened the screws holding the board inside the case and
gentle lowered the panel. As I lowered the panel I happend to notice
that the pressure sensors were on the opposite side of the case from the holes
for the hose. Duh! when I had replaced the board, in wiggling it
past vacuume electric lines, I had managed to get it reversed 180 deg
(square case - so it fit just fine). The resistance that I thought
indicated the hoses were on the barbed manifold pressure fittings were
actually the hoses stuck under/between components on the board.
Needless to say, it was somewhat embarrasing to
report back to Tracy that after assuing him the hoses were attached, turns out
they were not. But, Problem solved.
Just thought this might make you feel better
{:>)
Best Regards
Ed Anderson