Top-flite TOPA0135 User Manual download pdf (Page 11)

❏ 11. Make the skins for the stabs and fin using

three 1/16" x 3" x 36" balsa sheets. See the sketch

for the correct layout on the sheets. Refer to the

plans for the exact shapes and sizes but

remember to cut the sheets slightly oversize.

Note: The grain direction of the skins is

parallel

to the leading edges of stab and fin.

❏ 12. Cut a 2-1/2" wide cross-grain strip from one

of the 1/16" x 3" x 36" balsa sheets used for the

stab and fin skins, cut it to fit, then glue it between

the S1 stab ribs.

Caution: If you have recently used any CA

Accelerator on the structure during previous

steps, be aware that residual accelerator may

cause the thick or medium CA you may use

during the next step to harden prematurely.

Some modelers prefer to glue the skins to the

structure with aliphatic resin. Use T-pins to

hold the skins in position until the glue cures.

❏ 13. Be certain you can remove the stab from the

building board after you glued the skins on. Apply

an even bead of medium or thick CA to the upward

facing edges of the structure. Place a skin in its

proper position and press it down firmly until the

glue has set. Repeat this step for the other

top skin.

❏ 13. Use the template provided on the wing plans

to cut four Elevator Skins from a sheet of 1/16" x

3" x 36" balsa.

❏ 14. Build the Bevel Gauge from the die-cut

1/16" plywood then drill a #48 (or 5/64") hole at

each punch mark. Use the gauge with a ball-point

pen to mark the bevel and “rib end” indication

lines on the inside surfaces of the elevator skins.

Make rights and lefts.

❏ 15. Use your Easy-Touch with fresh 150 or 220-

grit sandpaper to bevel the aft 1/4" of the elevator

skins (indicated by the aft line drawn with the

gauge) down to roughly 1/32".

❏ 16. Glue the die-cut 1/8" balsa Elevator

Leading Edges to the notches in the ribs then

glue the bottom elevator skins in position. Note:

Be sure the LE’s are parallel to the stab TE. Hint:

A stick will serve as a lever to push up the elevator

skin to the elevator leading edge while you are

gluing it.

❏ 17. Glue the top elevator skin in position.

Weights placed on the stabilizer will help hold it to

your flat building board to assure a straight, true

stab and elevators.

❏ 18.

Carefully remove the stab and elevators from

your building board. Remove the jig tabs and use a

razor saw to separate the elevators from the

stab. Use an Easy-Touch loaded with 220-grit

sandpaper to blend the ribs to the trailing and

leading edges of the stab to prepare the structure for

the bottom skins.

3/8"

1/32"

- 11 -

1/4"

1/32"

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Top-flite TOPA0135 User Manual Page 11

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