Fellow RV builders,
Some of you are already aware of the investigation I did into resolving a problem I saw with periodic deviations in fuel flow and fuel pressure in cruise flight.
The highly summarized lesson learned: Don't mount the fuel flow sender in Van's recommended location inside the tunnel. Mount it between the fuel controller and fuel spider as many other builders have done.
I captured data showing that I was on the verge of vapor lock, due the pressure drop and temperatures associated with the fuel flow transducer in the tunnel.
For a detailed report including the data I collected here's a link to my write-up on the full situation.
http://tcwtech.com/Fuel flow write-up.pdf
Bob Newman
N541RV
RV-10
Some of you are already aware of the investigation I did into resolving a problem I saw with periodic deviations in fuel flow and fuel pressure in cruise flight.
The highly summarized lesson learned: Don't mount the fuel flow sender in Van's recommended location inside the tunnel. Mount it between the fuel controller and fuel spider as many other builders have done.
I captured data showing that I was on the verge of vapor lock, due the pressure drop and temperatures associated with the fuel flow transducer in the tunnel.
For a detailed report including the data I collected here's a link to my write-up on the full situation.
http://tcwtech.com/Fuel flow write-up.pdf
Bob Newman
N541RV
RV-10