Fuel Flow Transducer Location

[BSRV6]

I have an Rv-6 and was loking for a good places to mount my Red Cube Fuel Flow Transducer. Where are some places people have mounted them? I was thinking either the firewall or engine mount. Thanks for the help!

[Wunderon]

Depends on engine, etc. quite a few threads out there
one to look at http://www.vansairforce.com/communit...ar#post1002607

[rv8ch]

Here's how Van's did it on the RV-14. Click on the image to go to the source which allows you to look at it from many angles - takes a minute or two to load, so be patient.

[TS Flightlines]

Carbed or injected?

Tom

[BSRV6]

Crabed and a 0-320 lycoming.

[Raymo]

Originally Posted by BSRV6

Crabed and a 0-320 lycoming.

In carbureted engines, the flow transducer should be between the mechanical pump and the carb. The exact location will be dictated by your particular setup/exhaust routing.

[YellowJacket RV9]

Mine is a FloScan in the cockpit, midway between fuel selector and boost pump. Yes, I know not the optimal location, but simple and easy, out of the heat of the engine compartment, and mine is always accurate to within a couple tenths of a gallon at each fill-up. Many are located in the same place without issue. A filter is reccommended upstream of it, however, as it has a small orifice.

Chris

[rv8ch]

For those with their fuel flow transducer upstream of the fuel pump, are you not concerned about vapor lock?

[TS Flightlines]

There are literally 1000's of locations and opinions of where to mount the flow transducers. Typically for carbed engines, between the mechanical pump and the carb is the most optimum location. Injected engines, between the servo and the flow divider. Our opinion is based on data from AirFlow Performance. Don and I have talked about these locations and our theories for them. Don has the flow bench data from his testing.

Firewall locations, although they work for some builders, is not the optimum location.

Tom

[Snowflake]

Others have mounted one in each wing root, and have flow for each tank independently. With the right fuel gauge, your fuel level measured by the flow out of each tank can be more accurate than either floats or capacitive senders.