Saturday, April 18, 2009

Flap Detent Bracket






Worked on the flap detent bracket. The flap handle pushbutton would not fit on the tube where it is mounted to nor would the pushbutton fit inside the flap handle. Had to sand the end of the tube down a bit to allow it to slide on the tube and sand the middle step on the pushbutton to allow it to slide in the flap handle.

To sand the end of the tube, I mounted the tube in a battery powered hand drill and used some sandpaper to reduce its outer diameter. Went slow and took off just enough so the pushbutton would just slip on the tube.

To sand the pushbutton, I used the scrap from the tube and first reduced its outer diameter just a bit, allowing a friction fit between the scrap tube and the pushbutton. Mounted it in the drill and used sandpaper to reduce the outer diameter of the middle step. Went slow and took off enough so it would slide in the flap handle.

Mounted the detent bracket and pushbutton assembly and spring in the fuselage using the 0.025" spacers. It was about 1/32" too short so I allowed for this when I riveted the pushbutton to the tube.

Primed all of the components and final painted the upper portion of the flap bracket my powdercoat color. Will final paint the lower portion of the detent bracket with the grey stone finish on Sunday.

Cut and final drilled the F-1261 plastic flaperon spacers. When drilling these to #12 do it in steps. If you try to drill it to #12 in one step, it will get sucked up the bit as the bit penetrates. ONLY DRILL THE SPACER TO #12 AND NOT THE BRACKET. Expoxied them to the bracket using a piece of 1/8" scrap to maintain the required clearance. After allowing the expoxy to set up a bit riveted it.

When fitting the grommet material for the fuselage flaperon hole cut it 0.5" LONGER than the plans indicate. 3 3/16" is TOO SHORT. Trial fit it, and cut off just enough for a good fit.

Will not final drill the flaperon torque tubes now. It will have to wait until I have enough room to mount the wings.

Started to gather and debur the parts for rudder cable installation.

Time Today - 5 hours