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I would be very surprised if the EC2 is not within
+- a couple of RPM. I have just completed the RPM function in my digital
fuel monitoring system and it will read to within +-1 RPM of the actually
rpm. There is no question that the readout from the EC2 would be many
times more accurate than any eyeball tach gauge (or even a great ear
{:>))
That's not to say there is no possibly of error -
while digital is quite capable of that kind of accuracy - in reality it is
no better than the computer computational algorithms that the programmer
installed {:>) (and coded). .
Ed
Ed Anderson
RV-6A N494BW Rotary Powered
Matthews, NC
----- Original Message -----
Sent: Tuesday, July 27, 2004 2:15
PM
Subject: [FlyRotary] Re: EM-2 Accuracy of
RPM
That's my thought too, but it does feel like it
could be a little high (using my highly-trained tuned-ear) for the
readout. What sounds like a nice rump, rump, rump, is usually indicating
between 1200-1500 rpm. Its probably just be the unique "rotary sound"
vs. the typical American V-8 sound. Also, the 3-rotor has a different
sound than the 2-rotor. I'll guess I need to address this to
Tracy. Isn't Tracy at OSH this week?
Mark
S.
At 12:51 PM 7/27/2004 -0500, you wrote:
Has anyone actually
verified the rpm readings from the
EM-2? I have no particular
reason to question it, but it would be good to
know that the EM-2
readings are accurate within some factor.
Mark S.
Hi
Mark,
I'm assuming that you also have an EC-2. If that's the case,
I'm pretty sure the EM-2 is getting it's RPM data from the EC-2. If
the EC-2 doesn't know the exact RPM of the engine, we're all in trouble
:-)
Seriously, I never questioned it for a second, but you
can call Tracy and see if there's any way it could be wrong.
Cheers,
Rusty
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