I have an early RV3A with fuselage tank. Typical dual diaphragm mechanical pump but no electric pump. If and when the mechanical pump fails will it allow enough fuel to flow through, with the little head pressure only, to supply the engine? I was installing a new mechanical pump on a Piper this weekend and decided to blow through it to see how free flowing it is. Not very.......
I do not have the original planes to see if an electric pump was originally recommended or not.
I do not have the original planes to see if an electric pump was originally recommended or not.