Dumas 1257, Manual

Page: 11 / 42

PT-212
11
Kit No. 1257
INSTALLING THE RUDDER TUBE (See FIG. 14)
37
Drill a 5/32” dia. hole in the center of the face of the 1/2” x 3/4” x 1” pine Rudder Block. One way to
find the center easily is to draw diagonal lines from opposite corners.
(See FIG. 14)
38
Sand the bottom of the Rudder Block so that when placed in the hull, the Rudder Post is straight up
and down.
39
Cement the Rudder Tube (5/32” dia. x 1-7/8” brass tube) into the hole in the Rudder Block. The
bottom end of the Rudder Tube must extend out 3/8” from the bottom of the Rudder Block.
(See
FIG. 14)
40
Turn the boat upside down. You are now looking at the bottom of the boat. Measure forward from
the edge of the Transom, 7/8” along the center of the hull, and drill a 5/32” dia. hole.
41
Cement the Rudder Block to the inside the hull. To avoid getting cement into the Rudder Tube,
apply the cement to the underside of the Rudder Block before installing it into the hull. Then
position the Rudder Tube into the hole and press the Rudder Block into its final position. Let dry.
Use gap-filling (medium) CA glue for this procedure.
NOTE: There is no need to file the excess brass tube that is protruding out beyond the bottom of the
hull. You can blend it into the hull with Bondo to finish it off.
This is all of the hardware you
will be installing at this time. Don’t worry about the pretty
pictures you didn’t use. I guarantee you that by the time you have finished this boat model, you will
have used all of the figure
s.
BUILDING THE HATCH (See FIG. 25)
42 Draw a line with a pencil, 1/4" all the away the entire outside edge of the Hatch (D2).
43
Construct the frame using 1/8” x 1/4” wood strips following the dimensions shown on the drawing.
(See FIG. 25)
NOTE: The wood strips will follow the pencil line previously drawn.
NOTE: You will be cementing the thin edge of the wood strips to D2.
BUILDING TIP: You may want to lay weights on top of the Hatch while the glue dries. There may be a
tendency for the wood strips to curl up during this time. This will cause the Hatch itself to curl also.
Therefore, it will not lie flat to the deck.
NOTE: The strip of 1/8” x 1/4" laying flat towards the rear end of the Hatch is to support the 20mm
Depression Rail which you will be installing later .
This now completes the construction of the hull. The
remaining hardware will be installed in the “INSTALLING THE
REMAINING HARDWARE” section towards the end of this instruction
book. Proceed now to the building of the Cabin and Turrets. The
deck fittings will be constructed as needed for the assembly.