Originally Posted by AirHound
I didnít build my 2012 RV-12. Was wondering if the occasional strong fuel pump gas stream can neg impact fuel tank floats/innards/accuracy?
Thanks and Happy Flying New Year!
I don't know if I understand your question correctly, but if you mean a high velocity stream from a fuel nozzle having a neg. effect on the fuel tank and sender? No, I am not aware of any problem caused by that. I don't see how it would be possible since the filler tube makes the fuel enter the tank pretty much straight down at the back of the tank but both of the fuel level floats are well fwd in the tank.
A change in fuel gauge accuracy is usually caused by an increase in resistance between airframe ground and the mounting flange (ground path) of the fuel level sender.
The RV-12iS redesign included adding a ground wire between the airframe and one of the sender mounting screws, to help mitigate this problem.