From: "Ralph Krongold" <Ralph@i-ktechnologies.com>
Subject: Re: Europa-List: EIS versus Steam Gauges
Europa-List message posted by: "Ralph Krongold" <Ralph@i-ktechnologies.com>
Ron - are you referring to the specific instrument called the "EIS" from
Grand Rapids . . . or do you mean ANY generic EIS (Electronic Instrument
System)? If your question is not about a specific system, please be aware
that there are electronic instrument systems (such as the IK2000, AIM-1 &
AIM-2 -- sorry for the plug -- as well as those from other companies) that
are specifically designed to operate during the transient conditions that
occur during engine cranking and start-up. This is critical so that an
immediate indication of oil pressure is available when the engine starts.
You might want to check with different EIS manufacturers about this.
Ralph Krongold
I-K Technologies
www.i-ktechnologies.com
----- Original Message -----
From: "Ronald J. Parigoris" <rparigor@suffolk.lib.ny.us>
Subject: Europa-List: EIS
Anyone ot there flying with just an EIS with no Engine Steam Gauges and find
it acceptable? thx. Ron Parigoris
From: "Carl Pattinson" <carl_p@ntlworld.com>
Subject: Re: Europa-List: EIS versus Steam Gauges
If you fit an EIS just make sure you have a means to isolate it from the
main bus during startup. We have found that if the EIS is not switched off
on startup (starter cranking) the spikes often scramble the memory and
alarms which take about 20 mins to reset again. The worst thing is the reset
ususlly causes the screen contrast to go to zero and then everything becomes
impossible to ajust until the screen contrast can be increased (ie: the
display appears to go blank).
I would suggest that a momentary disconnect button is fitted close to the
starter switch so that temporary isolation can be effected, though a more
sophisticated setup could include an isolator solenoid connected to the
starter solenoid.
An manually operated isolator switch (which is what we have) is not a very
satisfactory solution as its very easy to leave it on during startup and
also easy to forget to turn it back on after startup.
Our EIS is currently playing up in that the oil pressure and temp readings
are jumping about by a couple of degrees/ PSI. We suspect this is possibly a
prelude to the oil pressure sensor failing which I believe is a common
problem with Rotax 912 engines (unless someone else has a better
explanation).
It would be nice to have the luxury of both analogue and digital readings
but not very practical.
Otherwise the EIS is very good and we would recommend it.Ours is the Grand
Rapids version.
Carl & Dot
G-LABS
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