ORIGINAL: beppeVRCS
I'm always puzzled and amazed by the ''savings on fuel costs'' that can be obtained by expensive engines on expensive aircraft, controlled by very expensive equipment!
Did you ever compute the expenditure in fuel over a year period, for instance, compared with what we spend in airplanes, radios and engines in the same period?
Beppe
This post says a lot about pattern flying. It can really seem exclusive to only those who can "afford" it. Many of us want to make the sacrifice for a chance own that "perfect" plane,but it doesn't make sense to have the plane and can't relax and put in the practice if you're worried about the cost of fuel. There's no peace of mind in watching the fuel level in the bottle and trying to squeeze the most out of every flight. This is why I still fly only IMAC. Pattern is the purest form of precision so I really want to get involved but the truth is its too expensive for planes limited in size. Gasoline power will be a way to ease the pressure when it evolves.
Anyway, the 20cc 4-stroke is not the answer . A 30cc 2-stroke gasoline engine on a carbon pipe will be the solution to those who cannot afford the glow fuel.
Take a good look at the "Syssa Aircraft Performance SAP 180". Made in the USA. As soon as they make a decent header this will be a successful engine for serious pattern work.
It will weigh about the same as a YS 170 with CDI, but with say a 14 oz tank, so the 11lb limit can easily be reached.
As soon as the recession eases up and the job is secure again I personally will go for this engine, coupled to a "Black Magic".