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kj7sr(at)earthlink.net
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 Posted: Sun Oct 19, 2008 11:30 am Post subject: Oil Temp & EGT temp. |
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A question for those with an 80 ho Rotax 912. What do you look for as normal EGT and Oil Temp when cruising at about 5500rpm?
Chuck
Kitfox Model IV
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kitfoxfugit(at)yahoo.com
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| Posted: Mon Oct 20, 2008 7:42 pm Post subject: Oil Temp & EGT temp. |
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A question for those with an 80 ho Rotax 912. What do you look for as normal EGT and Oil Temp when cruising at about 5500rpm?
Chuck
Kitfox Model IV
I can't give those numbers on mine right now but wanted to note that with the Ivoprop it seems to do best at 5000 RPM, I don't cruise it at 5500.
JA KF IV Speedster 912UL
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kmamjones(at)comcast.net
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| Posted: Tue Oct 21, 2008 3:35 am Post subject: Oil Temp & EGT temp. |
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I just received the new 2008-2009 catalog from Lockwood Aviation. Page 160
shows UMA engine gauges with range markings specifically for the Rotax 912
and 912S. The Oil Temp gauge shows green from 180 to about 230 degrees,
then yellow from 230 to red line at about 270. They show an EGT redline at
about 1600, with no with practically no yellow caution range.
You may wish to call Lockwood to confirm this data.
Ken Jones
Waynesboro, PA
Series 7 under construction
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MDKitfox(at)aol.com
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| Posted: Tue Oct 21, 2008 4:18 am Post subject: Oil Temp & EGT temp. |
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In addition to the list experience, I suggest you check out the Rotax
website. They have the specifications for all temperatures and
pressures you may need, including those for instrument markings.
Their website is: http://www.rotax-aircraft-engines.com
Rick Weiss
Series V Speedster, SkyStar S/N , 912S Power,
Daytona Beach, FL
MDKitfox(at)aol.com
[quote]
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lcfitt(at)sbcglobal.net
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| Posted: Tue Oct 21, 2008 7:54 am Post subject: Oil Temp & EGT temp. |
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John,
I largely ignored the EGT gauge as it never approached the 1600 max. Then
there are gauge variations and thermocouple location variations and then
needle postions in the carburetor etc. I don't think you can find a normal.
Mine tended to run in the mid 1400s though. Regarding oil temps. The oil -
at least for a while - should be slightly above the boiling point of water
to help clear moisture from the oil. With the typical oil cooler set-up in
the Kifox, it is sometimes a problem getting the oil temp up there. With my
Model IV, the typical cruise temp was about 190°. I could get it higher in
climb. I think you will find that most that have the oil cooler will put a
touch of tape on the cooler to help raise temps in the cooler months, and
some even in Summer. The reason I opted for the smaller oil cooler was
because, most of the airplanes at the factory fly-in when I was at that
stage had tape covering most of the cooler surface. And this was late
Summer. I eventually went to cockpit adjustable oil cooler shutters as even
the smaller oil cooler was a bit much. I ran them mostly closed.
Lowell
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