Three cylinders mounted one atop the other and separated by connecting propellant and other pipes. The smallest cylinder, which served as the combustion chamber, is at the bottom, with adjoining, welded on exhaust nozzle. Chamber with welded dome on top with one pipe protruding from center and four equidistant pipes protruding upward from the periphery of the top of the chamber. Two of these pipes lead into the next and largest sized oxidizer (liquid oxygen) tank while the remaining two pipes lead to the uppermost (gasoline ) fuel tank above. Both propellant tanks are flat on the top, From the uppermost fuel tank is projecting a looped or arched pipe stretching from one side of the tank to the other. No shroud, also to save weight.