Red Cube Transducer Install Location

Discussion of aircraft electrical system design, construction, and problems.

Red Cube Transducer Install Location

Postby rdsafe » Sat Aug 27, 2016 3:10 pm

Where are you successfully installing your fuel transducer? In front of the firewall or behind it?

In front of the firewall - it will be in all that heat and possible running up hill as it should.

Behind the firewall - out of the heat; but running down hill quite a bit.

The instructions that I've come across state that it should be installed in a level plain with straight lengths of pipe on both ends and no sharp bends close to the transducer.

With the AeroVee engine there's no pulsation from a fuel pump the bother it.

I'm leaning toward behind the firewall; but wonder if it will read properly.


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Re: Red Cube Transducer Install Location

Postby Bryan Cotton » Sat Aug 27, 2016 4:00 pm

I don't understand how it could read different based on location. Flow is the same at all points in a closed system. We use a lot of flow transducers at work.
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Re: Red Cube Transducer Install Location

Postby peter anson » Sat Aug 27, 2016 9:40 pm

I think the idea of the uphill flow is so vapour bubbles don't get trapped in the flow meter. I have my meter flowing uphill in the engine bay but it's wrapped in a little blanket of fire-sleeve. It's after an electric diaphragm pump and gascolator and before the engine fuel pump. Seems to work fine.

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