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Oil pressure/Flydat

 
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alan.twigg775(at)gmail.co
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PostPosted: Sat Jun 22, 2019 9:19 am    Post subject: Oil pressure/Flydat Reply with quote

I am commissioning my engine and have an oil pressure problem.
Ie no oil pressure indicated on start.
I called CFS who appeared most helpful, telling me that I have the wrong sensor for the Flydat. I bought the old style as recommended. No change.
I am an apprenticed Aero engine man of more than 50 years, so went back to my roots and fitted a remote direct reading gauge. Positive 53psi at 56 degrees oil temp. Still zero on the Flydat. What is the latest EIS, I am ready to junk the Flydat.
Alan Twigg
Kit 463 Motorglider ( long wings) UK.

Sent from my iPad


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Remi Guerner



Joined: 14 Dec 2010
Posts: 254

PostPosted: Sat Jun 22, 2019 11:27 pm    Post subject: Re: Oil pressure/Flydat Reply with quote

Alan,
The older Flydat only works with a version of the resistive VDO sensor which has the two connections isolated from the ground, while the then standard resistive sensor was grounded through the sensor casing.
When Rotax introduced the electronic oil pressure sensor, they also introduce a new modified Flydat which does not work with the resistive sensor.
I suggest you find out what Flydat P/N you have and search through the Rotax doc ( IPC, Install Manual, Flydat Manuals) to determine the sensor P/N you need. Then order it from Rotax.
Let me know your Flydat P/N if you need more help.
Regards
Remi

PS: my aircraft has the Flydat installed and I lived with that for 19 years. But I do think this instrument is really BS compared to any EMS available today.


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