Top-flite TOPA0135 User Manual download pdf (Page 36)

❏ ❏ 8. Install a Ball Stud with a Nut onto a servo

arm. Use epoxy or plastic compatible thread lock to

permanently secure the nut to the ball stud. Snap

the ball stud into the dual-end ball link then fit the

servo arm to the servo. Confirm that both

bellcranks are centered as described in the

previous step, then mount the servo to the servo

rails. Add a few drops of thin CA to the holes in the

balsa servo rails, then let it soak in and cure to give

the wood screws some more “bite”.

❏ ❏ 9. Cut two pieces from a 3/16" x 3/16" x 24"

balsa stick and glue them between both W-2’s and

W-1’s to make a “ledge” for the sheeting.

❏ ❏ 10. Mark the location where the wing bolts will

pass through the bottom sheeting. Hint: Push a

sharpened piece of 1/4" brass tubing through the

wing bolt plate and out through the sheeting.

❏ ❏ 11. Mark the approximate location of the flap

servo hatches (if installing flaps). Use a pin to poke

holes through the sheeting at the corners of the

flap servo hatch inside the servo hatch rails and

ribs W-3 and W-4.

❏ ❏ 12. If you will be installing fixed landing

gear, use the same technique to locate the position

of the LG blocks. Push a pin through the sheeting at

each end of the grooved block, then drill a 3/16" hole

through the sheeting at the location of

the LG block. Trim the sheeting from the groove. in

the LG block to accommodate the landing gear.

❏ ❏ 13. If installing retracts, cut strips from a

1/16" x 3" x 30" balsa sheet to fit between ribs W-2

and W-3, W-3 and W-4, and W-4 and W-5. Notice

the grain direction. Glue the strips to the inside of

the bottom wing skins on both sides of the wing.

This will strengthen the wing skins around the

wheel well cutouts.

❏ ❏ 14. If installing flaps, make six Flap Hinge

Blocks from the shaped 5/8" x 9" stock. Glue them

to the inner trailing edge and the bottom sheeting

in the locations shown on the plans. Mark the

location of the flap hinge blocks on the outside of

the inner trailing edge.

❏ ❏ 15. Make six Aileron Hinge Blocks from the

3/8" x 1/2" x 9" balsa stick. Glue them to the outer

trailing edge and the bottom sheeting in the

locations shown on the plans. Mark the location of

the aileron hinge blocks on the outside of the outer

trailing edge. Be sure the tip end block is flush or

below the TE.

❏ ❏ 16. If installing the Outboard Drop Tank

Pylons, cut four 1" long blocks from the 1/4" x 3/8"

x 9" Outer Pylon Mounting Rail glue the blocks to

rib W-7 in the bottom sheeting in the locations

shown on the plans. Poke a pin through the

sheeting on both sides of the blocks then, drill a

5/64" hole through the sheeting between the blocks

into the rib.

❏ ❏ 17. Trim the ends of the 7/16" x 1-5/8" x

6-5/16" balsa Wing Center LE block until it fits on

the forward dowel plates between the leading

edges. Cut the slight “V” shape to match the

dihedral of the wing then place the wing center LE

back on the wing.

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Top-flite TOPA0135 User Manual Page 36

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