I have a Flydat with my 914 and have not installed an additional Rev
counter, although the Constant speed unit of my Kremen prop gives prop rpm
readout. With 2 exceptions I have been entirely happy with the Flydat and
certainly haven't felt the need for any analouge instrument. The 2 quibbles
with the Flydat are that with most batteries the voltage drop associated
with starting the engine switches off the Flydat which then has to go
through its set up cycle again and so doesn't let you see initial oil
pressure. Secondly if you exceed any of the preset parameters a message
'SERVICE' comes up on the screen and stays there for the first 30 secs after
every startup, and can only be removed by visiting the Rotax agent. Having
no data for such a long time after firing up is highly irritating, as is the
need to travel to the other side of the country to get it fixed. I managed I
think to run the oil pressure low enough to trigger this response when I was
having problems with shutting down the engine, related to faulty mag lead
earth connections. Otherwise it is brilliant and I certainly would not want
to go back to a row of dials. David Joyce
----- Original Message -----
From: Hans Jrgen Danielsen <hansjd@online.no>
Subject: Re: RPM readout
> What's the experience with the Rotax Flydat EIS???
>
> Hans.
>
>
> ----- Original Message -----
> From: <kbcarpenter@comcast.net>
> Subject: Re: RPM readout
>
>
> > I have the same experience with the EIS 2000 unit. It is accurate and
> > convenient. Also I have been impressed with the friendly tech help.
> > I have no connection with the company.
> > Ken Carpenter
> > N9XS mono 914
> > ----- Original Message -----
> > From: "John & Paddy Wigney" <johnwigney@worldnet.att.net>
> > Subject: RPM readout
> >
> >
> > > Dear Europaphiles,
> > >
> > > I would like to give my comments on RPM readout based on about 100
hours
> > > experience on my mono XS with a 912S engine. I installed an EIS panel
> (see
> > > below) which has a digital RPM display and I also installed a Rotax
> R629M
> > 2 inch
> > > analog tachometer since I believed that I would use the analog as the
> > primary
> > > tacho indication. Before flying the plane, I belonged to the school
> which
> > > believes that analog indication is the only way for quick
understanding.
> > > Interestingly I had spoken to Greg Toman at Grand Rapids Technologies
> who
> > make
> > > the EIS unit on another matter and he explained that I would stop
using
> > the
> > > analog gauge and would rely on the digital. I did not believe him, but
> he
> > was
> > > right. The EIS refreshes very rapidly, at least as quick as the needle
> > swings,
> > > and it is always extremely accurate. For example, I have a WhirlWind
> > constant
> > > speed prop and in cruise, I can adjust the RPM up or down within 10
rpm
> by
> > using
> > > about a quarter turn of the prop vernier. I find now that I never
refer
> to
> > the
> > > analog tacho.
> > >
> > > I should explain that I have no personal or business relationship with
> EIS
> > but
> > > for those considering panel design,I can highly recommend the EIS 2000
> > unit. It
> > > has various pages which can be accessed as necessary and a default
> > "favourite"
> > > page where I display :-
> > > RPM
> > > Oil temperature
> > > Oil pressure
> > > Fuel pressure
> > > Fuel flow (this is an optional extra item)
> > > CHT
> > > EGT
> > > All the outputs can be set with high and/or low alarms which flash a
> large
> > red
> > > lamp.
> > >
> > > The other engine outputs available on my unit on the other pages are
:-
> > > Total fuel remaining. (Reset at every fuel fill)
> > > Endurance time (Calculated by fuel remaining divided by current fuel
> flow)
> > > Voltage
> > > Coolant temp
> > > Timer for current flight. (This resets automatically)
> > > Total engine time. (Equivalent to Hobbs time)
> > >
> > > Finally, analog gauges do have their place. I do use a Manifold
Pressure
> > analog
> > > gauge to set my cruise throttle opening.
> > >
> > > Cheers, John
> > > N262WF
> > >
> > > Fred Fillinger wrote:
> > >
> > > > Nigel Charles wrote:
> > > > > ...
> > > > > An rpm gauge is the only engine gauge which I feel needs analogue
> > display.
> > > > > Ironically these are often the ones which need the most setting
up.
> > Mine
> > > > > overeads by 200rpm at 5800rpm.
> > > >
> > > > RPM should be the most suspect of all. Convenient to think digital
is
> > > > more accurate, but you can't just count pulses - accurate to within
> > > > parts per million, but at even 50RPM resolution, the display update
> > > > rate is unacceptable. Other approaches then become dependent on
> > > > mechanical and other issues in the stator ass'y from whence come the
> > > > pulses, with accuracy attainable with $$, unless the higher price is
> > > > just more profit. Same for analog gauges. Digital RPM checkers
which
> > > > read optically are very accurate and affordable. Borrowing or
buying
> > > > one of these is arguably a must! Or a freq counter from Radio Shack
> > > > and do the math.
> > >
> > > The Europa Forum is supported by Aviators Network UK
<info@avnet.co.uk>
> >
> >
> >
> >
>
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