This all sounds like it suppose to but, my friends coupe overflows the nose tank. He has the restrictor. The lines from the nose tank to the main are open (one is larger diameter than the other which seems odd. But that was the design. The outlet of the tank is clear as it does drain back, just not fast enough. He does not fly with a very high throttle setting. It seems that the flow back is just not fast enough or the fuel pump is too good. Were there more than one size of restrictor to be used?
Hal --- In [email protected], "pwood94041" <pwood94...@...> wrote: > > "Okay, you asked for it. So here's a newby question if there ever was one. > The fuel system. I notice when I try to fill the nose tank that it kept > bubbling down when it looked full. I assume it's going into the two wing > tanks. Is this so? And if so, can I just fill the wing tanks by continuing to > add fuel to the nose tank? Also, as the plane burns fuel, the only indicator > I have is the float gauge outside the window. How do I know when the wing > tanks are empty? Or will they burn first and then draw down the nose tank? > > So there, you see, a real beginner here with Ercoupes. My apologies for > asking such a basic question but..well hell, I gotta start learning my way > around this little deuce coupe. > > Steve" > > And here's the answer. The nose tank is never filled except in the case > mentioned of the Alon that was allowed to run dry. Always Fill The Wing > Tanks Only. And just to an inch or so of the top, or the fuel can be sucked > out. > Yes, the fuel will run from the nose tank into the main ones. But it is a > L-o-o-o-n-g process. Please use the wing fill ports, and Be Sure you get the > Caps ON RIGHT. Opal and I got a thrill on that one headed to the 2001 > Ercoupe Owners Club meeting in Terrell, Texas. > Your "Float gage outside the windoe" should be on one of the caps to the > wing tank. The "classic" Ercoupe gage is a wire sticking up through the cap > on the nose tank. When the wire starts down, you better also! Is there one > on your Ercoupe? > The way it works is: One fills the wing tanks. The engine-driven pump > puts gas into the nose tank from the wing tanks. There is a restrictor > coming out of the pump into the nose tank. If the restrictor is not there, > the pump overruns what can be burned and the fuel comes out the top of the > nose tank = Very Disconcerting! The unused fuel flows back to the wing tanks > from a vent line that should be near the top of the nose tank. Some systems > flow into a specific tank; others flow into the pipes between the tanks. > In short, a simple system with many variants. > Percy >
