Digital OAT

Does anybody in the group have a digital OAT indicator?

We've just put a new single piece windshield in our plane and moved the
standard OAT gauge to the pilot's side window. Now we've decided to put all
new 1/4" side windows in and rather than drilling a hole through a brand new
window, I'd like to consider one of the digital OAT's such as Davtron or EI.
I'm wondering exactly how they are installed and where the temp probe is
located.

Thanks,
Jim

I ditched my Cessna juice cans when I got the new STC'd air vents from
Sporty's. I already had an EI US8A engine monitor with two unised
channels. I added OAT and Carb temp. The OAT probe is in the left wing
mounted in the inspection plate just outboard of the strut. It's been
there for five years now with nary a complaint.



Jim Burns wrote:
Does anybody in the group have a digital OAT indicator?

We've just put a new single piece windshield in our plane and moved the
standard OAT gauge to the pilot's side window. Now we've decided to put all
new 1/4" side windows in and rather than drilling a hole through a brand new
window, I'd like to consider one of the digital OAT's such as Davtron or EI.
I'm wondering exactly how they are installed and where the temp probe is
located.

Thanks,
Jim

The JPI engine analyzer comes with one included, if you're considering
that.

Jim,

I'd like to consider one of the digital OAT's such as Davtron


We have a Davtron probe, displaying on the Garmin GTX 300 transponder.
Nice, but the Garmin software is missing an option to calibrate the
temperature, so ours is indicating 3 degrees C too warm. Garmin says
that's about the tolerance of the probes, but it would be really easy
to have an offset in the software. Oh well...

--
Thomas Borchert (EDDH)

Paul, you're just spooky! Just this minute I had JPI's page pulled up
looking at their EDM 760 Twin. I figured out that I simply wouldn't be
happy without the fuel flow transducers and that pushes the price up to
$6700. For now, I think I just want to get the windows done and ad a simple
digital OAT.
Jim

"Paul kgyy" wrote in message
oups.com...
The JPI engine analyzer comes with one included, if you're considering
that.

The fuel flow is worth the money, particularly if you can connect it to
a panel GPS to get automatic calculation of fuel remaining at arrival.
The new JPI also computes miles per gallon on the fly, a great way to
check most economical power and altitudes. :-~

Makes me wonder how Lindy made it to France... Now, not that I'm agin'
gadgets, actually I love em... But, if you start with the tank(s) full
and you have a watch, you have all the equipment that aviators have
used to calculater remaining fuel since Wil-n-Orv started the whole
ball rolling...
Let's say that having the fuel flow meter allows you to improve your
fuel burn by 3% overall... How many decades is that to generate a net
return on the cost for the flow meters?

denny

Let's pick that figure of 3% and do the calculation. Average owner-flown
aircraft is something on the order of 130 hours a year. Just for grins,
let's pick a round number of 10 gallons per hour at the national average
(right now) of $3.35 a gallon. That's $4355 of fuel a year. Times 0.03 is
around $130 a year. I doubt it will be decades.

Jim



Let's say that having the fuel flow meter allows you to improve your
fuel burn by 3% overall... How many decades is that to generate a net
return on the cost for the flow meters?

denny

Hmm... now multiply that out by our Aztec figures of 300 hours per year and
25 gph and I come up with $750 per year saved. Add installation price to
the JPI EDM 760 Twin and break even comes close to 10 years, BUT I'd get all
that additional engine operating information that may save some more serious
money via better engine monitoring. Thanks Jim... no somebody slap me...
all I want is a digital OAT!! focus! focus! Gosh this is hard.
Jim

And it doesn't do much good if the tanks are not completely full to
start with.............