I had Burning smell in cockpit after quick throttle-idle descent in Kitfox 5 with 912uls. This was after flying for 2 hours. The Oil Temp dropped to 116 and then smelled burning oil for a minuet. I currently do have the oil cooler partially blocked to deal with the engine getting too cold. Once I was able to get the oil temp back up over 120 the burning smell was gone. Any ideas what happened here?
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Re: Low Oil Temperature after decent and Burning Smell with Rotax 912uls
by Sean Griffin » 2 years ago
No idea about the burning smell but your oil temperatures are below Rotax advised minimum of 50C
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Re: Low Oil Temperature after decent and Burning Smell with Rotax 912uls
by Craig E Maiman » 2 years ago
I've also been having an issue with too-cold temps. Takes several minutes to get up to 50C (120F) and even then it sometimes slightly dips down below that point in flight and certainly after landing.
I think my oil thermostat is simply not functioning. I put covers over parts of the oil cooler and radiator and it doesn't seem to make much difference. Personally, I think this is a flaw in the Rotax design.
I'm glad the weather is starting to warm up...
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Re: Low Oil Temperature after decent and Burning Smell with Rotax 912uls
by Sean Griffin » 2 years ago
Sorry ! Cant help you, lack of experience - in my part of Australia, we think the one or two frosts we have per year is REALY COLD!
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Re: Low Oil Temperature after decent and Burning Smell with Rotax 912uls
by Sam Purpura » 2 years ago
If you’re blanking off the oil cooler when you have a thermostat it would probably be safe to say that it’s not functioning correctly and probably stuck open. If’s it’s working properly then you shouldn’t be blanking off the cooler.
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