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balanced rudder?

Old 10-09-2005, 07:17 PM
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kamakasi
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Default balanced rudder?

I am currently building a Sagittia ( the 2 meter one) as was typical of airtronics it has a balances rudder. Personally on a 2 meter plane I don't see the need especially with ailerons. So the question is if I make the balanced part of the rudder ( the part forward of the hinge line) solid do I need th increase the size of the movable rudder surface?
Old 10-09-2005, 08:11 PM
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SoCal GliderGuider
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Default RE: balanced rudder?

There is no need for the balance rudder due mainly to improved servos. I tend to use metal gear servos in most all applications where the control surface can be jammed in handeling. Don't need to have one lock up when a plastic tooth gives way.
Old 10-09-2005, 09:05 PM
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kwmtrubrit
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Default RE: balanced rudder?

I did exactly what you're talking about on my Riser 100. I did not increase the rudder and it turns fine.

Keith
Old 10-11-2005, 01:25 AM
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Default RE: balanced rudder?

Back when the Sagitta was current many folks went to non balanced rudders and just built the balance portion as part of the fin. All accounts that I read it was not a problem and many said that the model actually flew better since more of the fin and rudder was able to act as a variable camber airfoil like it's supposed to do.

Especially if you're adding ailerons you won't need any balance portion.
Old 10-11-2005, 01:40 PM
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Default RE: balanced rudder?

thanks for the info. It all falls in with what I remember reading, just needed to check my assumptions. I did wind up increasing the actual rudder by 15%. Can't see a problem with that out side on need less throw in a aileron coupled set up

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