This 0-440 differs from Bruce Satra’s first one in that it burns gasoline on spark ignition rather than methanol on glow ignition. He produced the tooling and molded the distributor cap from Bakelite, just like the full-size engines. With a bore of .937 and stroke of .875, its 2.4 cubic inch displacement develops in excess of 2 horsepower. It is machined entirely from aircraft grade aluminum bar stock. The engine is 11″-long, 8″-wide, and 7″-high.