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-   -   Balancing a Model (https://www.rcuniverse.com/forum/aerodynamics-76/11603882-balancing-model.html)

karolh 09-09-2014 12:54 PM

Balancing a Model
 
Is there any real difference in balancing a model right side up versus balancing it upside down.

Top_Gunn 09-09-2014 05:04 PM

No. But if the center of gravity is lower than the bottom of the wing, the plane will be stable when balanced upright, and very unstable if balanced inverted. Vice versa if the CG is higher than the top of the wing. So people generally balance high-wing planes upright and low-wing planes upside down. But the balance point will be the same either way.

With a Vanessa rig, you can do it either way with any plane.

da Rock 09-10-2014 05:56 AM


Originally Posted by karolh (Post 11877379)
Is there any real difference in balancing a model right side up versus balancing it upside down.

A MAJOR DIFFERENCE..................... A HUGE DIFFERENCE...................

Depending on how far the CG is above or below the wing. They seldom are actually inside the wing. The instructions that come in ARF manuals often give a balance location on the wing, like 3" back from the LE at the root. That's a balance point, not the CG location.

Try and balance any model both ways and you'll discover quickly if the CG is above or below the wing. Don't bother if you've got a high wing or a low wing. It's obvious.

da Rock 09-10-2014 05:58 AM

If you're having difficulty getting your model to stay still............... turn it over and try again.

Top_Gunn 09-10-2014 06:53 AM

By "difference," I think he meant to ask whether the balance point would be different. It won't.

karolh 09-11-2014 04:00 AM


Originally Posted by Top_Gunn (Post 11877845)
By "difference," I think he meant to ask whether the balance point would be different.

Exactly.


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