Companies that manufacture certified helicopters, such as Robinson, install expensive reliable 4-stroke engines and then derate them. This is in total contrast to the manufactures of uncertified helicopters, such as the Mini 500 and the Helicycle. They use low-cost less reliable 2-stroke engines and then force additional power out of them by adding tuned exhausts.
Stay tuned to this page for an upcoming announcement on the new totally reliable and cheap helicopter; the
OXYMORON.
Named after its inventor; Mr. Oxy Moron.
