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Old 12-30-2010 | 01:07 PM
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mschneider2005's Avatar
mschneider2005
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From: Matthews, NC
Default RE: Scale Dynamics AT-6 Texan Build Thread

Hey Guys,

Sorry for the delay and thanks for sticking around.

I'm back from a long trip to CA. It's time to get going on the Texan build again.

My wood order arrived from Balsa USA in great shape. Nothing missing , broken or damaged.

I started by sorting the sheeting into hard and soft groups. Both ends of the 48" x 3" x 3/32" sheets get an angle cut by measuring 1" from the end on the bottom up to the corner. Then the 36" x 3" x 3/32" gets cut in half to make 2 each 18" pieces. Those also get an angle cut to mate up on each end of the 48" piece. The result is one long sheet measuring 82" long by 3" wide.

I made up 4 (2 for the top and 2 for the bottom) of these sheets before proceeding to the next step.

Then I used a dozen t-pins to pin a sheet into its location 1/8" back from the front of main spar. I used masking tape to outline the sheet on the foam. It's important to have the tape flush with the edge of the sheet. If it gets under you wont be able to remove it, if it's too far away, the glue will stick to the foam where it's not supposed to.

Once the sheet is outlined with tape, you remove the sheet and pour on the Gorilla Glue. I used an old credit card to spread a generous but even layer on the foam and a thin layer on the backside of the sheet. You don't need to worry about one kicking off before you do the other, but don't take a lunch break in between. When you're ready place the sheet on the foam and be sure you have it lined up within the tape line.

Start pinning! I started in the middle and worked my way towards the tips. Pin down both edges of the sheet and both ends of the sheet evenly. 4 pins on this edge-4pins on that edge, 4 pins on one and then the other, and so on. Insert the pins at a 45 deg angle. I did one pin 45 degrees to the front and the next 45 degrees to the rear. To prevent the sheet from riding up the pin when the glue starts to expand. When the sheet has been pinned, stand the wing up on it's leading edge so not to distort the -2 deg washout or accidently build in a twist. That's it... wait 5 hours to the glue to cure and do another sheet on the other side of the wing. Once you have the 4 main sheets installed, the wing becomes incredibly strong.

The next step is to install the trailing edge...
More to come soon.
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