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Speed Brake Cutout. I hated cutting into my glass work. I used a diamond cutting wheel on my dremel tool. |
Cut out to second level and began shaping the contour of the speed brake. Hardpoints are glassed in for the hinges. |
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| Speed Brake Door being glassed with hardpoints in place. Later when I installed the brackets for the motor I made the harpoints larger. | The speed brake "door" is hinged in place. Duct tape makes an excellent release for fiberglass work. |
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| I have a local aluminum colorizing business anodyze my aluminum parts. |
I made a mockup of the seatback angle and tested my motor for form and function. |
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| My fully extended speed brake mockup. I used a Danaher Motion motor rated to 112 pounds force. It has a pot so I can display it's position. | Speed Brake fits nicely. I am pleased. It took work and patience to get here. |
| My Chapter 9 landing gear
portion comes later after the strakes are installed because I am using
the Infinity retractable landing gear. So, I moved
onto chapter 10. The speed brake mockup form I put together had similar measurements as the speed brake door (flap, call it what you will) and that really helped me get it together right without cutting too large of a hole in the bottom of my plane and also it helped me get a tight fitting door. It worked right the first time. :) |