gasoline hpi

Also, an airplane engine operates at its maximum rpm for a lot of the time, while in a car you get on and off the gas all the time, an airplane is kept at wot a lot of the time. because of this, as well as the reasons odysseus said, airplane engines are designed to operate at lower rpm, they have different intake and exhaust port, and induction timing. while it is possible to derive more power per a given displacement by turning more rpm, an engine can make decent power at lower rpm if it is designed to operate at lower rpms. like odysseus says, there is no reason to take risks by running an engine at high rpms to make maximum possible power when that is not necessary. in a car, .2 more horsepower can give you that 5 mph you need to beat the competitors car, but with a plane consistent performance is more important than having the best possible performance. that and, like odysseus says, if you turn a prop too fast it breaks.