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Forum members,

I am operating a new 912ULS now and I have an operations question: Were in my previous engine I had the old heads and hence measured the CHT temps and detecting a total loss of coolant was straightforward, what would happen now in terms of coolant gage temperature if all coolant is lost in flight? Will it be possible to detect that the heads are overheating if there is no coolant touching the probe?

I would think that since the body of the probe is still threaded to the head, if the tip is not touching coolant the probe will still get hot from heat being conducted through the probe's body.  But I wanted to find out if anything is officially written on this.

Chris

  • Re: Detecting coolant loss on new heads

    by » 4 months ago


    LOL...

    I had this precise thing happen to a friend a week ago. Due to a loose coolant hoseclip the engine lost 1-2 litres of coolant. In flight the "CT" gauge (Note these gauges are in the head but are actually CT not CHT that is "Coolant Temp") went very high to the top of the gauge. He did a precautionary landing, found the glycol everywhere inside the cowl, found the loose clip, tightened it, topped up and flew to his service centre.

    The temp sensor was ruined, no other damage.


    Thank you said by: RotaxOwner Admin

  • Re: Detecting coolant loss on new heads

    by » 4 months ago


    Thanks for the feedback Glenn. Glad to hear your friend did well handling that emergency. So it seems that the gage will still provide a high temperature indication which is a good thing.

    Best Regards,

    Chris


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