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General control line discussion => Open Forum => Topic started by: Paul Taylor on December 29, 2007, 08:38:44 PM

Title: Stiffners on the tip of the tail feathers
Post by: Paul Taylor on December 29, 2007, 08:38:44 PM

So I was looking at the stab and elev on my new model. I remember when I built the F-Twister that Ted had 1/4 strips of balsa with the grain running 90 degrees from the stab and elev. glued on the tips.
So I did the same thing to my Cardinal.
Was not in the plans but sure makes the parts stiffer.

So my question is why all stabs and elevs are not built this way. (Beside the ones that are built up)

Paul  H^^

Title: Re: Stiffners on the tip of the tail feathers
Post by: Dan McEntee on December 30, 2007, 06:34:35 PM

  Some designers and builders don't do things like this because of the "extra step" involved, and if you use proer wood it will be stiff enough anyway. But when you get to a certain point where you are willing to do the extra little things that add up to big gains or improvements, you end up with better flying airplanes and as a result you fly better. Another similar step is inlaying a strip of balsa like that in the central portion of a sheet surface to add stiffness and warp resistance. I have seen this on many British all sheet F/F sport models. Teaches you to be precise with your parts fit also.  If the parts fit tight, minimum glue is used, and little or no weight build up and a stiffer, better part is the result. It all just depends on what you are willing to do.
   Good luck and have fun,
  Dan McEntee

Title: Re: Stiffners on the tip of the tail feathers
Post by: Leo Mehl on December 31, 2007, 11:41:45 AM

I do this on my flaps,it keeps them from warping and makes it easir to be exact with the fit at both ends of the flap.Have happy New Year. HB~>

Title: Re: Stiffners on the tip of the tail feathers
Post by: John KruziK on December 31, 2007, 02:34:02 PM

another great idea!! Thanks John