I have the VMAR Twin Otter ARF which has some design issues. The one I am most concerned about is the light build design of the tail feathers. The horizontal stab is VERY thin and flat. It is constructed to slide into a slot in the vertical stab and then expoxed in place. The problem is that it is very thin and only connected at part off its cord to a relatively small area on the vertical stab. This results in a very flemsy horizontal stab which even flexes when you run up the motors on the ground (static run-up).

My plan is to drill a hole through the vertical stab and attach (Epoxy) a carbon fiber tube (1/4 inch OD) to the bottom of the horizontal stab from one end to the other. I am thinking of installing the tube near the leading edge since it is not attached to the horizontal stab.

I would like some other suggestions on how to build up and strengthen the horizontal stab without altering the scale look of the model. all suggestions are appreciated.

Thanks,
Vic