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Old 06-06-2009 | 01:34 AM
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NM2K
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From: Ringgold, GA
Default RE: Is An OS 55AX The Right Engine?


ORIGINAL: DarZeelon

Real planes don't have such power...
Let's compare a high-wing aileron trainer, to a Cessna 162 (Skycatcher, the 152 replacement).
This plane powers its 1,320 lb. MTOW, with 100 HP (Continental O200D), meaning 13.2 lbs per HP...

A .40-.46 engine realistically puts out about 0.9-1.1 HP.
Realistic power is flying a 5 lb., .40-.46 sized trainer, off a paved runway, with a standard .12-.15 engine in the nose.

Anything more than this would be overpowering it... Even a standard .40 has a 170% overpower!

That Cessna climbs-out at a 10-15° up trajectory. Vertical??? What the hell is that?


Flying right is power management; not overpowering.

Flying "right" is subjective and can vary from one end of the spectrum to the other. There is no one "right".

Remember when most of our R/C models had to be flown at wide open throttle? You may not, because of our age difference. No, this is not a put-down. I have no put-downs for my RCU friends. I enjoy flying models in about every way imaginable. I like slow models, fast models and in between speed models. Why limit oneself to just one style?

One of the most enjoyable models I ever flew was a Cox RTF Sportavia guided by a two channel Sanwa radio with an .049 Cox engine in the nose. I wish I could find another one to buy and fly. The last one that I flew belonged to a friend. A beautiful handling model for only having rudder and elevator control.


Ed Cregger