*Question:* When you push the raised section down, does it go correctly into position? I once fixed a similar problem but it was caused by an improper fit underneath the spoiler stopping it going all the way down.
*WARNING!!! *The spoilers can jam *VERY* easily after an adjustment and you will only find out about it when the air is flowing over them, most likely when you are on finals which happened to me and I got some sideslipping practice. To test them, get one, preferably two people to spread their fingertips along the top of each spoiler and use friction to push the spoiler backwards and lightly downwards. Effectively simulating the airflow. If the fit is incorrect they will jam! The reason for this is that in the very first bit of normal movement of the spoiler is backwards not just upwards. It is a good idea to check this at least at every annual inspection. Rob Rob Thompson 0429 493 828 On Mon, May 15, 2023 at 3:33 AM Tom Preisser <t...@ecoflight.com> wrote: > I have a slightly warped airbrake which sits properly throughout 85% of > its span, but then proud of the surface for the outboard 15%. > Only five mm high at the very end, but it bothers me. Three fixes come to > mind - > I could grind it thinner, bringing it down to the surface of the wing. > I could mount another closure spring at that end. Even a little closure > force is sufficient. > I could weight it into form as it sits in the hot sun this summer, maybe > even paint a black topcoat, and see what it gets (?). > > Two questions; > Does anyone have a better idea ? > Has anyone replaced their closure springs ? I did on both wings, and it > isn't perfect - the common springs from the hardware store are close to > yield when airbrake is fully open, and don't provide much closure force > when airbrake is shut, i.e. if I flip a wing upper surface down the > airbrake will hang open just a little. Perhaps > the much more powerful airbrake closure spring isn't adjusted properly to > compensate for wear at the junction of the ball and pin drive on the wings > and the torque drive tube slots in the airbrake drive tube in the wing root. > Any and all thoughts would be much appreciated. > > > >
