Top-flite TOPA0135 User Manual download pdf (Page 18)

❏ 2. Wet the outside surface of a sheet and test fit

it to the fuselage. Hint: a 50:50 mixture of water

and rubbing alcohol applied to the outside surface

will make the sheeting easier to bend. Make

adjustments to the sheet if required.

❏ 3. Apply a bead of thick CA (remember the CA

may cure on contact if there is any residual

accelerator in the balsa wood) to the main side

stringer and sub stringer then quickly place the

sheet in position. Start from the middle and work

outward inserting T-pins to hold the sheeting in

place until the CA cures.

❏ 4. Glue the top of the side sheet to the stringers

and cockpit deck with thin CA starting from the

middle and working outward. Glue the sheet to the

rest of the stringers and formers.

❏ 5. Glue the other sheet to the fuselage in the

same manner. Add a piece of leftover 3/32"

sheeting to the rear of each fuselage side.

GLUE THE STABILIZER AND FIN TO

THE FUSELAGE

❏ 1. Carefully trim the fuselage side sheeting until

it is even with the plywood inner stab saddle. Make

adjustments to the fuse sides very carefully so you

don’t change the incidence angle set by the

inner stab saddle. If sanding is necessary, put

masking tape over the inner stab saddles. Trial fit

the stab to the saddle. Continue trimming the balsa

side sheeting and the stringers that extend past

F-9 until the stab contacts the entire length of the

plywood stab saddle.

❏ 2. Remove the stab and trial fit the fin to the

fuselage. A small piece of fin sheeting will need

removed from the fin LE so it will fit in former

F-9. The fin is in the correct position when the front

of the fin trailing edge contacts the plywood stab

saddle, the bottom of the fin trailing edge contacts

the work surface and the fin LE fits all the way

down into F-9. Study the fuselage side view. The

trailing edge of the fin must be perpendicular to the

work surface.

❏ 3. Place the stab onto the stab saddle, then trim

the sheeting on both sides of the fin until it fits in

the same position it was when you fit it without

the stab.

In preparation for gluing the stab and fin to the

fuselage, make a “dry run” of the next few

steps first without using any glue so you

understand the procedure.

❏ 4. Put the stab on the saddle and add weights to

hold it in place. Measure the height of each tip

above the work surface and if not identical, make

small adjustments to the saddle and fuse sides.

Hint: Slide 1-3/8" balsa blocks (not supplied) under

the tips and adjust their position to level

the stab.

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Top-flite TOPA0135 User Manual Page 18

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