Today's Message Index:
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1. 01:33 AM - Re: Location for temperature sender/s ()
2. 02:43 AM - Re: Location for temperature sender/s (G-IANI)
3. 03:18 AM - Location for temperature sender/s (Remi Guerner)
4. 03:43 AM - SV: Location for temperature sender/s (Sidsel & Svein Johnsen)
5. 06:09 AM - Re: Location for temperature sender/s (Kevin Klinefelter)
6. 07:10 AM - Re: Location for temperature sender/s (rampil)
7. 08:37 AM - Re: Location for temperature sender/s ()
8. 10:32 AM - Re: Location for temperature sender/s ()
9. 01:55 PM - Re: Location for temperature sender/s (rparigoris)
10. 07:13 PM - Re: Location for temperature sender/s (Fred Klein)
11. 09:45 PM - Re: Location for temperature sender/s (Kevin Klinefelter)
Message 1
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| Subject: | Re: Location for temperature sender/s |
Hi Ron
I first fitted my OAT sender directly between the two gear legs on my tri gear
but found heat from the engine would give me a false reading, so last year moved
it to behind the Starboard gear leg fairing and it works well now,
On My 914 I also fitted a sender into the main inlet track to measure inlet air
temps, there is a blanking plug already there and it gives you a heads up on
thermal loads the engine is taking,
ivor
---- rparigor@suffolk.lib.ny.us wrote:
>
>
> Hi Group
> Ihave an Ilec SC-7 variometer with ability to display
> temperature. It comes with one sender which is a little 3/16"
> cylinder with a flat on it. It's a pottedsemicondoctor. I was
> thinkingI could use multiple senders with a selector switch. What is
> your favorite location to place senderto detect OAT? Which
> location/s under cowl on a Europa is it desirable to know the temperatures
> of (Rotax 9124)? any other locations that may be desirable to know temp
> of? Under instrument module? Inside cockpit? (what location).
> Thx.
> Ron Parigoris
Message 2
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| Subject: | Location for temperature sender/s |
Ron/Ivor
I have a temperature sensor between the two gear legs on my tri gear and it
seems to give reasonably accurate readings.
Ivor, have you got any records of your air box temperature readings. I
appreciate they will be quite complex given the variables of OAT and engine
load. The reason I ask is to confirm there is virtually no chance of carb
icing on the 914.
Ian Rickard G-IANI XS Trigear, 280 hours
Europa Club Mods Rep (Trigear)
e-mail g-iani@ntlworld.com
Message 3
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| Subject: | Location for temperature sender/s |
<<<<<<<< What is your favorite location to place senderto detect OAT?
>>>>>>>>
Hi Ron,
With the 914, I had the OAT probe protuding behind the lower right NACA
air intake.
With the 912S I installed it inside the round air intake to the cylinder
cooling air guide.
In both cases the probe can be fitted so that it is not necessary to
remove it nor disconnect the wiring when you remove the lower cowling.
Both work very well in flight (I crossed checked the indicated temp
with a thermometer temporary fitted through one of the cockpit vents).
However, while on the ground, the temp is too much influenced by the
engine heat and therefore is not usable.
Remi Guerner
Message 4
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| Subject: | Location for temperature sender/s |
Ron,
You may consider the same location as I have used:
At the upper inboard edge of the left side NACA valve, which lets air into
the cockpit. The probe is not influenced by engine heat and also out of
direct sunshine.
Svein
LN-SKJ
Message 5
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| Subject: | Re: Location for temperature sender/s |
I mounted my OAT probe inside the right wing root,aft of the spar. This
location works well as it is far from the engine, and exhaust and not
exposed to the sun.
Ivor, where is this blanking plug on the 914 inlet?
Kevin
----- Original Message -----
From: rparigor@suffolk.lib.ny.us
To: Europa
Sent: Thursday, February 11, 2010 10:59 PM
Subject: Europa-List: Location for temperature sender/s
Hi Group
I have an Ilec SC-7 variometer with ability to display temperature. It
comes with one sender which is a little 3/16" cylinder with a flat on
it. It's a potted semicondoctor. I was thinking I could use multiple
senders with a selector switch. What is your favorite location to place
sender to detect OAT? Which location/s under cowl on a Europa is it
desirable to know the temperatures of (Rotax 9124)? any other locations
that may be desirable to know temp of? Under instrument module? Inside
cockpit? (what location).
Thx.
Ron Parigoris
Message 6
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| Subject: | Re: Location for temperature sender/s |
After trying several locations on the cowl of my 912s, I can definitively
say that the cowl is simply the wrong place if accuracy matters.
My first location was through the most foward duct plate under the gear box. Despite
the probe being well insulated from behind, the OAT would be
up to 20F high in cruise flight
Next location was the lower stbd vent, on a plate under the oil tank and
just next to my cold cabin air inlet for the scat hose. It sits at least 10F high
in flight. There have been several other locations chosen so I did not need
a separate electrical connector for the temp probe in removing the
cowl. All off from OAT, all rising with engine start.
Once you fly, you will see anywhere under the fuse is a poor location by
examining the trail of exhaust soot. Likewise, top of fuse is problematic
due to sunlight. I think Kevin is on the right track.
A good location which is also convenient to wire and connect is not a trivial
exercise. I am still looking for a satisfactory location so that I can improve
the reliability of my flight test data with accurate Density Altitude.
--------
Ira N224XS
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=286128#286128
Message 7
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| Subject: | Location for temperature sender/s |
Hi Ian
I havent kept any records as such but have monitored the temperature on a regular
basis,
It connects to a Dynon EMS 10 so gives me verbal warnings if it goes outside the
parameters I set, Low 20C High 60C ,
I have only had a low temp warning on starting up then quite quickly rising to
Mid 20C
For normal flight, I have flown above 15000 ft with minus 5C OAT and an inlet
temp of
44C thats the highest I have seen but still well below the intervention temperature
The normal range for my plane is 27C to 37C at average heights of 5000 ft summer
or winter, so in answer to your question I think it not possible to get carb
ice with a 914,
The Dynon EMS has a data log that I can download so will try and do that before
taking the plane back to Biggin hill in march,
Ivor
>
> Ron/Ivor
>
> I have a temperature sensor between the two gear legs on my tri gear and it
> seems to give reasonably accurate readings.
>
> Ivor, have you got any records of your air box temperature readings. I
> appreciate they will be quite complex given the variables of OAT and engine
> load. The reason I ask is to confirm there is virtually no chance of carb
> icing on the 914.
>
> Ian Rickard G-IANI XS Trigear, 280 hours
> Europa Club Mods Rep (Trigear)
> e-mail g-iani@ntlworld.com
>
>
>
>
>
>
>
Message 8
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| Subject: | Re: Location for temperature sender/s |
Hi Kevin
its number 56 on the attached JPG
Ivor
---- Kevin Klinefelter <kevann@gotsky.com> wrote:
> I mounted my OAT probe inside the right wing root,aft of the spar. This location
works well as it is far from the engine, and exhaust and not exposed to the
sun.
>
> Ivor, where is this blanking plug on the 914 inlet?
>
> Kevin
> -----
Message 9
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| Subject: | Re: Location for temperature sender/s |
Hi Ivor
Do you have an intercooler installed on your 914?
I would imagine worst case for potential ice would be fine pitch or at least having
the wind turn the prop with little to no throttle opening?
Is that what you find?
I would also imagine the second you begin to increase MP close to ambient pressure
having the prop pull the aeroplane, the heating from turbo compressing air
would raise temp above carb ice range. I owned a 1983 Volvo 245 turbo station
wagon with a air cooled turbo very similar to 914 and it came from factory without
an intercooler. In that configuration they stated temps would raise 145
degrees F over ambient. Once an intercooler was installed, temp would only raise
45 f over ambient, thus they would allow more boost. Anyway it was a standard
shift. Two or three times pulling off parkway using a bit of engine braking
had ice occur and had motor quit. For cetrtain ice was in the fuel flow regulator
gizmo that was in the breeze after air cleaner, but before turbo charger.
I never looked downstream but I suspect there was ice by throttle butterfly (this
was fuel injected) because it felt like there was ice in there. Sitting for
a few minutes had things melting and I was on my way. It would only happen
when car was pushing engine, if power was commanded before motor quit all was
fine after a hiccup or three. I installed intercooler.
Ron Parigoris
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=286204#286204
Message 10
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| Subject: | Re: Location for temperature sender/s |
On Feb 12, 2010, at 6:06 AM, Kevin Klinefelter wrote:
> I mounted my OAT probe inside the right wing root,aft of the spar.
Kevin,
Would that be "inside" the cavity in the wing, or within the space
enclosed by the wing root fairing?
Fred
Message 11
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| Subject: | Re: Location for temperature sender/s |
Fred,
Within the space enclosed by the wing root fairing. I mounted it through
the fuse at the outer layup for the crossbar. So the wires are inside
the baggage bay. I ran them up to the rest of the wire run under the
door sill. I covered it all by extending the fuel fill cover moulding,
to cover the aluminum fuel vent tube that goes down there on the way out
toward the flap hinge area.
Kevin
103 hours and having lots of fun!
----- Original Message -----
From: Fred Klein
To: europa-list@matronics.com
Sent: Friday, February 12, 2010 7:11 PM
Subject: Re: Europa-List: Location for temperature sender/s
On Feb 12, 2010, at 6:06 AM, Kevin Klinefelter wrote:
I mounted my OAT probe inside the right wing root,aft of the spar.
Kevin,
Would that be "inside" the cavity in the wing, or within the space
enclosed by the wing root fairing?
Fred
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