Dynaflite PT-19 Manuel d'utilisateur télécharger pdf (Page 23)

2. Cut the stab mounts from 1/4" x 3/4" x 30

balsa and glue them securely to the fuselage.

1—1 3. Use leftover 1/8" sheeting to sheet below the

stab to the stringer with the grain running vertically.

This is for the pushrod exit.

4. Before mounting the stab to the fuselage, you

should first carve the fin fairing blocks. The photo

shows some shim blocks that have been tack glued

into position. The lower shims are from leftover 5/8"

sticks used on the elevator LE. The top shim is from

1/2" wide wood from the stab. These shim blocks

are to properly space the fairing blocks.

5. Cut two 10" pieces from a 3/8" x 3/4" x 24"

balsa stick. These are the fairing blocks. Tack glue

them into position on the shims and carve the

assembly to shape. When you are satisfied with your

work, remove the fairing blocks and shims from the

fuselage. Clean up the stab mounting area.

6. Next, you will mount the stab to the fuselage,

but before doing so you need to look more closely at

it. As this is a large model, you should not depend

on glue alone to hold the stab in place. The plan

shows a 1/8" ply tongue that has been inset into the

stab and is used to key the LE of the stab into former

G in the fuselage. The photo shows two 1/8" dowels

that are used for the same purpose. Either method

works well but the dowels are probably easier to

install. In addition, the rear of the stab has a piece of

1/8" x 1/2" x 2-1/2" ply that is inset into the TE

and extends down into the fuselage.

7. Bolt the wing to the fuselage. Fit the stab into

position and adjust the stab mount as needed to

make the stab level with the wing. Be careful not to

change the incidence angle of the stab. Put a pin in

the nose of the fuselage on the centerline. Use your

string to align the stab just as you did for the wing.

When satisfied with the alignment, glue the stab in

position with 30-minute epoxy.

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Dynaflite PT-19 Manuel d'utilisateur Page 23