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horizontal stab angle

Old 08-22-2009, 11:39 AM
  #1  
Keith C
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Default horizontal stab angle

I am building a plane with center pod and twin booms. the wing is glued to the pod with 2 deg. built in. 3 deg. dihedral.
I am ready to install the booms and stab.
Is level with wing centerline correct? SS airfoil. (Cut down old trainer wings.)
Can i run 2 rudders with one servo and "V" shaped pushrods?
Ailerons ,now on paper ,are 15 X 1 1/2. Is this too much?
Thanks, Keith C.
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Old 08-22-2009, 06:06 PM
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Sparky Paul
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With ailerons, if the plane doesn't take off, there's no need for rudders.
One servo for each elevator half, and using a vee-tail mix would work if you need rudders.
I generally install a seperate servo for nose wheel steering on twin boom planes that do take off.
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Old 08-22-2009, 08:27 PM
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Keith C
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Thanks sparky,
The plane will not have wheels. Elevator is one piece between booms.
I'll build new one piece rudders.

Happy flying, Keith C.
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Old 08-22-2009, 09:25 PM
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Sparky Paul
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On this one, there's a pushrod running across the horizontal from the right rudder to the left rudder.
The servo is up in the front of the right boom.
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Old 08-23-2009, 11:10 AM
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Keith C
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Sparky, That is a lot like what i am building but mine is electric and prop is in front. Booms are peices of "5 gal." paint sticks from Walmart. weight is going to be under 2 # with 46" span.
How about only one working rudder, is this crazy?

Thanks, Keith C.
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Old 08-23-2009, 06:18 PM
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Purists might object, but I would no problems with a single working rudder like that.
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Old 08-23-2009, 06:27 PM
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Bub Steve
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Originally Posted by Keith C View Post
Sparky, That is a lot like what i am building but mine is electric and prop is in front. Booms are peices of "5 gal." paint sticks from Walmart. weight is going to be under 2 # with 46" span.
How about only one working rudder, is this crazy?

Thanks, Keith C.
One will work fine,,I've seen planes with one aileron that flew well, I have two rudder's and nosewheel one,It's easy,, bubsteve
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Old 09-21-2009, 10:35 AM
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Keith C
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Back to the angle of the elevator/wing question.
I have looked at some ARF's and the wing / tail seem to be on the same plane , however another one has 2-3 deg on the wing with the hor.stab. parallel to the fuse. This is a floater that came underpowered. I am updating power , do i need to change the incidence.
Thanks , Keith C.
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Old 09-27-2009, 06:21 PM
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Sparky Paul
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Depends on the wing section. A flat bottomed usually will have a small amount of angle relative to the horizontal, for a floater.
Adding a lot more power will make this angle unsuitable for lots of speed.
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Old 09-28-2009, 09:29 AM
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Keith C
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This one is a low aspect ratio flat bottom wing. I want to keep it a floater but it didn't come with enough power to keep it airborn.
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