From: "John Slade" <sladerj@bellsouth.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Subject: 13B smooth running issues
Date: Sat, 28 Feb 2004 19:26:45 -0500
Message-ID: <NMELKLCBIAJLEHHCHLJBIECGDBAA.sladerj@bellsouth.net>
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> Just occured to me: you don't use oil injection, do you?
No, Finn. I'm mixing 2 stroke oil 100:1

Thanks to all those who gave me input on starting. I put in a new set of
plugs and she blew some smoke, then started right up. Looks like the main
problem was preservative gunk in the engine which took a while to blow out.
I can now start the engine on demand and run it as long as I want to. So...
we're on to step 2. :)

I ran the engine for a total of 8 minutes spread over 5 or 6 runs this
morning. It runs on computer B. If I switch to A it dies immediately. I plan
to study the EC2 manual in depth with respect to programming, but I think I
have a few mechanical issues to deal with as well.

Cooling.
I don't think I have ANY water circulation at all. After each short 15
second run I added maybe a pint of water. In a later longer run of about 90
seconds I may have overheated the turbo. Perhaps it seized and this is
what's causing my breathing problem below. Anyway, the oil came up to about
180, but the water temp never moved off the peg, and the rad and pipes never
even got warm after any run. I have a slight drip from the lower water pump
fixture which goes to the rad. If this is the suction end, then I'm probably
sucking air into the system. I am running a thermostat. Maybe I should
remove it.

Breathing.
The engine seems starved of air. I hear a suction kinda noise on throttle
change and the manifold pressure is hovering around 20 inches of hg. (starts
at 30). If I leave the throttle alone the engine will cycle up and down
between say 2000 and 3000 by itself. It sounds sweet and happy, but
obviously something's not right here.

Oil Pressure.
I have a cheap mechanical gauge hooked up at the back (because my westach
reads 90psi when the engine's not running and goes off scale when it
starts). The guy watching oil pressure says that the cheap gauge went full
circle, past 100 and hit the zero stop coming the other way. The cheap gauge
has air in the line, but that wouldnt cause this behavior would it?. What
oil pressure should I be reading.

Comments & suggestions welcome as always. I'm wayyyyy out of my depth here.
John Slade
Cozy IV turbo 13B REW