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I am new at this engine running thing, having just
done the third start/run . I have some instrumentation, and am enclosing a plot
of Manifold pressure and Fuel pressure vs. time for the latest run. After
letting it warm up at ~14 in MP , I started increasing the power, and you can
see that the fuel pressure increases with the MP. Made one brief excursion
to ~5900 rpm, swinging a 76x76 prop.
All tests so far are with the cowl off, but the
ducts are in place.
More tests tomorrow. Longer run, move to higher
rpm, test cooling system more
Bill Schertz
KIS Cruiser #4045
N343BS
----- Original Message -----
Sent: Tuesday, September 23, 2008 8:51
PM
Subject: [FlyRotary] Re: Vacuum
Pulses
Al, after giving some thought
about the directions that came with the Mallory pressure regulator, it states
that if you are not using a turbo or some other boost device, to just leave
the vacuum port open on the regulator, which may be my best option, as
don't think I have any need to leave it hooked up. No sudden
acceleration of engine anticipated. I plan on doing the orifices for the
EC2 though. JohnD
Yes, I agree.
I started out with a unit that was not pressure referenced; for the
same reason –
NA. But it turned out that Tracy’s EC2 was setup
with the assumption of MAP referenced pressure, and I had trouble getting it
tuned. So I replaced the regulator. This was in the early days of
the EC2; maybe that more recent versions will tune fine without MAP
reference.
Al
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