Chris,
I am running auto gas. I need to check the EGT's for each power setting. I
only glanced at one of them when I was collecting the data set below and it
was around 1350, for a Rotax I suspect that this is a bit on the cool side.
Paul
----- Original Message -----
From: "Chris Beck" <n9zes@execpc.com>
Subject: Re: Europa-List: Setting the mixture - 914 Rotax
>
> Have you pulled the plugs and looked at them? That can also tell you a
> lot. Theoretically, you should pull them immediately after a high
> power run with a quick engine shutdown. Practically, that makes it
> tough unless you do a ground runup. I don't think you want to do a
> high power climb, kill the engine, and deadstick it, huh?
>
> I definitely don't think you should see soot buildup from a 914, just
> maybe some brownish residue. Are you running autogas?
>
> Chris
>
> <paul.mcallister@qia.net>
> >
> > Hi all,
> >
> > I was wondering how the correct air / fuel ratio is set for a 914. I
> > suspect that mine is running a bit rich. I see black soot on the
> cowling
> > and on the under side of the wing. I think that the fuel flows are on
> the
> > high side. I am seeing the following numbers.
> >
> > - 4500' @ 30' x 5000 rpm = 6.2 US Gallons per hour.
> > - 4500' @ 28' x 5000 rpm = 5.5 US Gallons per hour
> > - 4500' @ 26' x 5000 rpm = 4.5 US Gallons per hour
> >
> > I am also suspicious that it uses more fuel at the same power
> settings at
> > higher altitudes. I will connect my laptop to my EIS latter this
> week and
> > collect a larger data set to verify my measurements.
> >
> > I'd appreciate anyone's opinion as to what I am seeing so far.
> >
> > Thanks, Paul
> >
> >
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> >
> > _____________________________________________________
> >
>
>
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