Building a Gentlman's racer. needed an engine so I built this Miller v16 supercharged engine. Machined from 2in aluminum bar, w/ some copper and brass. 150 micron screen for air filter. about 200 nuts ranging from 2.4mm to 1.4mm(flat to flat) . About 100+hours on the engine and a few more on the hull conversion. Full 2.4gHz RC ...can't wait for spring!