Egt

[Spook712]

Hi,

I have on my 912Ul an EGT reading of 1500° and sometimes a little more.

I found out when i turn on the carb heat, the EGT decreases a bit.

any recommendations or experiences?

Cheers
Tuna

[mr bill]

Reading seems high, could be the sensor or the gage. Temperature should go down with carb heat.

[Spook712]

I checked the spark plug and they looked good!

[Olle1975]

Moin!

Limits of Operation 912 are 900°C/1650°C, 1500°F looks well.
During pulling the carb heat, the carb's gets warm air, therefore
less airtight, less Oxygen molecules than before and the egt will decrease.

Olaf

[HighWing]

Over the years there have been comments as to how probe placement can affect EGT readings. As I recall, too close can result in higher readings. A quick search suggests that 100 mm from the flange is about right.

[Av8r3400]

(3.937" for those of us who are metric challenged)

[Dorsal]

If you haven't seen this it is worth a read (at least I found it informative)

http://www.gami.com/articles/egt_myths.pdf

[HighWing]

(3.937" for those of us who are metric challenged)

That's me. If I had had a calculator in my school days rather than a slide rule and a book of log tables I wouldn't have wasted my life being a dentist.

Regarding Dorsal's post. I seem to recall that article and often think of the other implications regarding what might be information overload with everything that is revealed with the typical glass panels available today.

I guess I will have to reconsider my lament. I suppose my slide rule was close enough as was the EGT in my Cessna 170B