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aa5_driver(at)yahoo.com
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 Posted: Sun Oct 23, 2011 6:24 pm Post subject: Carb temp |
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Anyone know what a standard in flight reading for carb temp should be using an E.I. brand probe?
Kevin
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BARRY CHECK 6
Joined: 15 Mar 2011
Posts: 738
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| Posted: Mon Oct 24, 2011 3:12 am Post subject: Carb temp |
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Kevin:
Do not think of Carb Temp the same way you think of CHT or EGT Temps.
The Carb temp reads the AIR flowing through the Carb. The air Temp can and will vary ALL THE TIME.
What you keep in mind is: Carb Ice can form with temps as high as 70 F... Research this number I have heard all sorts of numbers being thrown around.
There is also a DELTA of the Carb Heat that is said to have been created by the FAA. But, I could not find it and the number is really crazy... Would you believe in a DELTA of 90 Deg F???
The Carb Ice point will change with RPM and OAT and COWLING and MIXTURE and HUMIDITY. The Carb Temp Probe just lets you know when you get into the POSSIBLE RANGE.
Lastly - The PROBE DIFFERENCE... It has been mentioned many a time about the difference in JPI & EI probes. Now, this would possibly be due to the mechanical design of the probe and that JPI may be touching the bottom of the CHT cavity. This would not be the case with either JPI or EI probes for the Carb. The probe does not bottom out against the far wall. If you want to be real scientific test the probe against some known's a glass of Ice water and boiling water or with a known temperature gauge.
Barry
"Chop'd Liver"
On Sun, Oct 23, 2011 at 10:21 PM, Airport Bum <aa5_driver(at)yahoo.com (aa5_driver(at)yahoo.com)> wrote:
[quote]--> TeamGrumman-List message posted by: Airport Bum <aa5_driver(at)yahoo.com (aa5_driver(at)yahoo.com)>
Anyone know what a standard in flight reading for carb temp should be using an E.I. brand probe?
Kevin
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