RV4 relief tube setup

17 Jul 2006 RV4 relief tube setup

Here are some pictures of a relief tube setup on a local RV4.

This aircraft was flown from Texas to Switzerland, and this configuration got a lot of use for both a male and female pilot. Works well, and according to the builder, it does not get any liquid on the bottom of the aircraft.

This is the tube where the funnel or other system hooks up.

Here is the venturi that creates a slight vacuum that pulls the liquid out.