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Old Apr 25, 2011, 07:11 PM
norcalheli is offline
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Marysville, Ca., US
Joined Jan 2007
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Balr14 has a great explanation of the physics involved in the self-stabilizing helis, as well as the difference between a 45* offset flybar (Nine Eagles, etc.) and a 45* offset head(Blade mSR, 120 SR). You might try searching for that. To specifically answer your first question, the self stabilizing helis are engineered that way to make them easier to learn than a 90* flybar heli. The compromise in that is that they aren't very responsive. It's harder to get them into forward flight, and to keep them going. The offset head is better for this than the offset flybar. With a regular 90* flybar heli there is an exponential increase in sensitivity and response. A regular heli will go where you point it, and keep going there until you tell it to stop. The downside of all that responsiveness is a total lack of stability. You have to learn how to fly one of these beasts, and you have to fly it every second it is in the air. Will they hover hands off? Yeah, for no more than five seconds or so. But they will do things that you would never expect a helicopter to do. 3D would be impossible if the heli were built to self stabilize.

Hope this answers some of your questions. Maybe some of the others will check in and provide some more answers.
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