Fittings for EI Fuel Flow Sensor?

Hello Everyone,

I am installing the red cube fuel flow sensor between my Precision Silverhawk servo body and the distribution block at the top of the engine. The FI system uses #4 hoses, and I'm wondering what kind of fittings others have used to attach those hoses to the sensor? It looks like the sensor takes -6 fittings, so do I need to get reducers? I've also read that I should use steel fittings in the fuel system, but the sensor is made out of aluminum. Any thoughts?

Thanks,

Hi Craig,

I used AN816-4-4D fittings (1/4" NPT x 1/4" hose) with the "red cube". All the hoses between the AFP servo and spider were -4.

Now you've got me thinking, why don't AN nuts and fitting gall? Is it because of the coating (name escapes me at the moment).

Regards,

Craig23 said:

......installing the red cube fuel flow sensor between my Precision Silverhawk servo body and the distribution block at the top of the engine......I've also read that I should use steel fittings in the fuel system.......

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If the suggestions from EI are to be believed, it is considered acceptable to use aluminum fittings with its transducer. Review section 3.10 (page 14-15) in the EI instruction manual for both size and type of fitting required for use with its red cube:
http://www.buy-ei.com/Manuals/EI%20MVP-50P%20II.pdf

Rick6a said:

If the suggestions from EI are to be believed, it is considered acceptable to use aluminum fittings with its transducer. Review section 3.10 (page 14-15) in the EI instruction manual for both size and type of fitting required for use with its red cube:
http://www.buy-ei.com/Manuals/EI%20MVP-50P%20II.pdf

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I know this thread is old, but Rick is still here so - - -

Rick, I am about to mount my "red cube" exactly like your photo. Since it has now been 7 years, has it provided good service in this location/orientation?

I have the stock IO360 M1B engine.