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ambient temperature inside the cowing

PostPosted: Mon Oct 19, 2015 10:35 pm
by mike20sm
Does anybody have temp probes that measure their cowling temps? I'm just curious what we're subjecting things like the fuel line, Rdac, and other components that might be negatively impacted by increased heat.

I'm also curious about the possible differences between a turbo and non turbo. I understand the turbo in flight runs nice, but once on the ground it could really turn into an oven?

Re: ambient temperature inside the cowing

PostPosted: Tue Oct 20, 2015 12:13 am
by fastj22
I put an extra OAT probe in my cowl and connected it to my rdac on an aux channel. I see between 120 and 140F.

Re: ambient temperature inside the cowing

PostPosted: Tue Oct 20, 2015 9:25 pm
by mike.smith
fastj22 wrote:I put an extra OAT probe in my cowl and connected it to my rdac on an aux channel. I see between 120 and 140F.


And one of my EGT probes was measuring the inside of my cowl before it got installed. It was running about 130 deg F on average.

Re: ambient temperature inside the cowing

PostPosted: Sat Oct 24, 2015 9:56 am
by kmwoody
Where did you guys have the probes located in the cowl?

Ken W

Re: ambient temperature inside the cowing

PostPosted: Sat Oct 24, 2015 10:33 am
by fastj22
kmwoody wrote:Where did you guys have the probes located in the cowl?

Ken W

Mine is tie wrapped to the engine mount about mid point.

Re: ambient temperature inside the cowing

PostPosted: Sun Oct 25, 2015 9:09 am
by mike.smith
kmwoody wrote:Where did you guys have the probes located in the cowl?

Ken W


Mine was in the area of the starter, behind the engine.

Re: ambient temperature inside the cowing

PostPosted: Sun Oct 25, 2015 8:07 pm
by kmwoody
Ok thanks, I just purchased a Earthx battery and it warns not to exceed 140 degrees. I would guess that is while energy is being drawn. I am going to put a blast tube to the battery box.

Ken W
Sonex 959
Installing CAMit 3300