'Outside Air temperature' probe position

[John Tipton]

Has anyone fitted their 'Outside Air temperature' probe in the NACA vent, is this a good place, or not

 

[lr172]

lots of threads on that topic. Those that have measured after moving from that location say it reads almost 10* above ambient.

 

[RV7 To Go]

I have seen many that have put it there but have heard that it gives inaccurate readings in that location. I put mine, as many do, about 6" back of the leading edge and about 6" below the horizontal stab. Seems accurate in that location. FWIW.

 

[DanH]

Underside of the wing, outside the propwash.

 

[airguy]

I put mine in the Vans-standard location for the bent-tubing pitot tube - and then installed a Gretz mounted heated pitot for IFR work. The OAT is just the perfect size to fill that hole.

 

[Cth6]

I have 2 OAT sensors on my 9A. One is in the wing fairing, installed by the builder, and it is 8+ off. One in the middle of the last wing access panel, I installed with an AV-30 and it is spot on. One of these days I am going to extend the sensor in the wing fairing.

 

[DarylT]

Has anyone fitted their 'Outside Air temperature' probe in the NACA vent, is this a good place, or not

I did originally. seemed a bit higher due to engine heat. I res-positioned under the wing in the first inspection bay. Now my true airspeed is accurate. Worth the change.

 

[RV6_flyer]

I have one in each NACA vent on different sides of the fuselage. The one in the SUN always reads higher.

See Dan Horton's (DanH) post above on recommended location that I think they should be.

 

[Davea320]

I put mine in the Vans-standard location for the bent-tubing pitot tube - and then installed a Gretz mounted heated pitot for IFR work. The OAT is just the perfect size to fill that hole.

Same