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.
> >
>
>
|