Compared to existing types, the Wind Bird had streamline qualities of an arrow, of a needle! Instead of the old complicated gasoline engine with its exposure of wide air-cooled flanges butt-heading against the wind, the new Conqueror-Eisel engine was a marvel of compactness, and of simplicity. This oil-consuming Eisel engine was fundamentally more reliable than the old gasoline engines, for it was without batteries, and was thus not dependent upon either an intricate electric ignition system, or upon a carburetor system for fuel supply. Separate fuel-injection into each cylinder assured a dependable and uniform supply of fuel--thus constituting in a nine-cylinder, nine individually operated motors in one. And of greatest importance for a vast trans-ocean flight, this new engine could fly a ship one-fourth as far again on the same weight of fuel as any other engine had ever been able to achieve. With an Eisel engine, the great Lindbergh could have flown to Paris, and then have flown eight hundred miles farther--all on the same fuel supply!