----- 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>
> >
> >
> >
> >
>
>
|