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Old 02-23-2016, 07:58 AM
  #30  
szempruw
 
Join Date: Jan 2014
Location: Gurnee, IL
Posts: 146
Received 30 Likes on 28 Posts
Default Main Gear Doors

There's a lot to do with only the bottom part of the wing sheeted. I finally received my repaired retracts. It was a bad gear motor. While waiting however, I laid up fiberglass doors.

I first used the lite ply stamped out pieces to carefully trace the shape in position on the bottom wing per plan. I used some scrap see through Monokote and covered the area. The next step was to use thin 1/16" 3M masking tape to outline the doors. This would make a nice indentation in the layup from which to guide the final cut.

I laid up the fiberglass I had. I also had some carbon fiber sheet. The sequence and weight (ozs.) was .75 / 2 / 2 / CF / 2 / 2 / .75 using West system epoxy resin, 105/206. The final thickness measured about .050" to .055".

I carefully pried the layup to prevent distortion and with minor difficulty, it popped off. The 3M tape was pulled off and it was easy to trim with a band saw.

I also took some time to try and model the inside of the gear doors. Not yet sure I'll use them. Worse case I wasted some time. Best case is they stiffen up the fiberglass a bit. It will all depend on the gear installation.
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