ORIGINAL: aeajr



As noted above, spoilers are usually just behind the spar. Some swing up, called barn door spoilers. Some come up like blades. You can make them out of trailing edge stock, flat stock or buy comercially made spoilers that drop in.

If you have a computer radio with Flap to elevator mixing, set up the spoilers as if the were flaps. Normally as you engage the spoiler the wing will drop as you are killing the lift. You want the glider to continue in a more or less flat glide rather than dive, so you usually add up elevator in the mix.

Now when you add the spoilers the glider does not dive, it simply comes down at a steeper angle of glide. That is why these are called glide path controls.

spoiler kit
http://www.hobbyking.com/hobbyking/s...ight_Pair.html

These are the blade types
http://www.hobbyking.com/hobbyking/s...ated_2pc_.html

In the photos below you see my AVA and my Spirit (red and white) There is a shot of the servo in the wing to operate the spoiler. On the AVA the spoilers are in the center section. They are the yellow sections.