In 1990, Pierre Blais, of Canada, built this engine which burns a methanol/castor oil mixture on glow ignition. The combustion of the fuel keeps the glow plug hot between cycles, so the plug doesn’t need to be regulated or powered while the engine is running like a spark plug does. The engine is 10”-long, 11”-wide, and 12”-high.
The methanol is burned, but since the castor oil is not flammable, it is discharged in liquid form. The castor oil in the fuel lubricates the internal parts before it is sent into the combustion chamber. However, the carburetor is in back and little oil reaches the cams in the front nose case. Blais solved the problem by sealing off the nose case from the crankcase and filling it with motor oil.