outside air temperature probe

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outside air temperature probe

Postby Darick » Sat Jan 28, 2017 2:15 pm

The MGL Stratomaster E3 engine monitor comes with a very small outside air temperature probe. Does anybody have a suggestion for placement? I was thinking the side of the fuselage, forward of the spar tunnel. I haven't decided on a way to mount it or protect it on the outside of the fuselage yet.
Thanks for any thoughts or suggestions.
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Re: outside air temperature probe

Postby ScottM-Sonex1629 » Sat Jan 28, 2017 2:36 pm

The MGL Xtreme in my Sonex has a similar OAT probe. I mounted mine on the pilot side, fuselage side vertical panel, just behind my NACA fresh air vent.
Last edited by ScottM-Sonex1629 on Sat Jan 28, 2017 3:58 pm, edited 1 time in total.
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Re: outside air temperature probe

Postby NWade » Sat Jan 28, 2017 2:51 pm

Darick wrote:The MGL Stratomaster E3 engine monitor comes with a very small outside air temperature probe. Does anybody have a suggestion for placement? I was thinking the side of the fuselage, forward of the spar tunnel. I haven't decided on a way to mount it or protect it on the outside of the fuselage yet.
Thanks for any thoughts or suggestions.


If you have one of the NACA vents for cockpit cooling, you could mount it inside that so its protected. Here's an example:
http://cdn.kitplanes.com/media/newspics/0113/sling-rivets.jpg

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Re: outside air temperature probe

Postby Darick » Sat Jan 28, 2017 3:01 pm

ScottM-Sonex1629 wrote:The MGL Xtreme in my Sonex has a similar OAT probe. I mounted mine on the pilot side, fuselage side vertical panel, just in front of my NACA fresh air vent.


Scott, do you have a picture or can explain how it looks on the outside?
Thanks for your reply.
Darick Gundy
Sonex #1646
N417DG
Taildragger, Aerovee, center stick, Prince P-Tip Prop
MGL E1, F2, V6 radio, Sandia Xponder, Reserve lift indicator (AOA), iFly 520
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Re: outside air temperature probe

Postby Darick » Sat Jan 28, 2017 3:04 pm

NWade wrote:
Darick wrote:The MGL Stratomaster E3 engine monitor comes with a very small outside air temperature probe. Does anybody have a suggestion for placement? I was thinking the side of the fuselage, forward of the spar tunnel. I haven't decided on a way to mount it or protect it on the outside of the fuselage yet.
Thanks for any thoughts or suggestions.


If you have one of the NACA vents for cockpit cooling, you could mount it inside that so its protected. Here's an example:
http://cdn.kitplanes.com/media/newspics/0113/sling-rivets.jpg

Thanks Noel, however I have a Peter Anson vent and there is no room for that arrangement.
--Noel
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Darick Gundy
Sonex #1646
N417DG
Taildragger, Aerovee, center stick, Prince P-Tip Prop
MGL E1, F2, V6 radio, Sandia Xponder, Reserve lift indicator (AOA), iFly 520
First flight! 10/21/2017
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Re: outside air temperature probe

Postby ScottM-Sonex1629 » Sat Jan 28, 2017 3:59 pm

Darrick:

Found a picture and realized it's behind the NACA vent. See pic. It's a small aluminum probe.

Image
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Re: outside air temperature probe

Postby Brett » Sat Jan 28, 2017 8:21 pm

Has anyone added one to the discovery lite efis? The internal one inside the unit has to be far from accurate.
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Re: outside air temperature probe

Postby jjbardell » Sat Jan 28, 2017 11:10 pm

Brett wrote:Has anyone added one to the discovery lite efis? The internal one inside the unit has to be far from accurate.


I added an external OAT probe to my discovery lite. It's inside the NACA vent to keep it away from direct sunlight. It works well.
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Re: outside air temperature probe

Postby Corby202 » Sun Jan 29, 2017 12:33 am

Put mine in the NACA duct also, works fine.
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Re: outside air temperature probe

Postby DCASonex » Sun Jan 29, 2017 3:25 pm

If using one of the plastic NACA intake vents, there is another advantage to using that for mounting the outside air temp probe. Plastic is a good insulator so it should read actual outside air temp and not that of the aluminum sidewall, and response to outside air temp changes will not be damped by the mass of the aluminum.

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