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Oil Temp Increases on 912UL

in 912 / 914 Technical Questions 10 years ago

  • Re: Oil Temp Increases on 912UL

    by » 6 years ago

    A PPC. That explains it.
    Thanks

    Roger Lee
    LSRM-A & Rotax Instructor & Rotax IRC
    Tucson, AZ Ryan Airfield (KRYN)
    520-349-7056 Cell

      
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  • Re: Oil Temp Increases on 912UL

    by » 6 years ago

    So what else could be the reason to the high oil temp?
      
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  • Re: Oil Temp Increases on 912UL

    by » 6 years ago

    Ask yourself if any of these may be a contributing factor.
    Over pitched prop. Any thing at WOT in level flight under 5500 rpm is over pitched and the lower the WOT rpm the worse it is. For you that would be a little tougher to determine, but know what the take off climb WOT is would tell you.
    Any oil hose with a tight bend that slows oil flow.
    An older oil cooler that may need flushing.
    Blocked air flow to the oil cooler.
    Just had one in my shop: Too small an ID of oil hose which slows the flow.


    With a Powered Parachute and an open air engine I would think temps would be in good shape. Temps can run a little warmer in the mid 4K's.

    Roger Lee
    LSRM-A & Rotax Instructor & Rotax IRC
    Tucson, AZ Ryan Airfield (KRYN)
    520-349-7056 Cell

    Thank you said by: udi
      
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  • Re: Oil Temp Increases on 912UL

    by » 6 years ago

    I still have an oil temp issue..
    On my last flights I realized that the oil temp goes up when I Reduces rpm speed and go down a little when increase...
    The Worst I got is 130C..in 4300RPM and when reduced speed (even to 2000) it doesn't go down...

    my oil cooler installed under the engine level in my PPC so it is getting airflow but not free
    Should I try to move the cooler over the engine where it gets free air?

    another issues I found:
    In MAG check there is a different of 280 RPM + Light oil leakage in rear oil return zone
    Is that could say something about oil temp?
      
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  • Re: Oil Temp Increases on 912UL

    by » 6 years ago

    266F is fairly hot. You may not be getting good cooling because you're flying so slow and the air flow as you described is being obstructed. If it can be moved to an open air flow area it could help. A test would answer that question. The slower you went the less air flow. Almost like pilots sitting on the ground for long periods. No real air flow.
    You should not have a 280 rpm mag drop differential. You do need to look at trouble shooting that and it is probably something minor.

    Roger Lee
    LSRM-A & Rotax Instructor & Rotax IRC
    Tucson, AZ Ryan Airfield (KRYN)
    520-349-7056 Cell

    Thank you said by: udi
      
    Report
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