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Started:
Completed: October 2004
Type: 25'-3" x 8'-6"
Powerboat
Link to Surf Runner 25 Page
in Design Catalog |
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Brian prepares another bulkhead to be added to the
strongback. |
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The
engine box longitudinal are screwed in place and
temporary gussets are added. This structure will
support the transom. The bottom panels are stitched
along the keel off the boat and then spread and laid
over the bulkheads.
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The
two side panels are not stitched together, but will
be screwed to a chine log. I glued two sticks of
yellow cedar together using the bulkheads as a mold.
The next day they were removed, shaped, sanded and
reinstalled. The lower side panels can now be
stitched on. to the bottom panels. I some times find
it easier install side to the bottom panels with
small pieces of plywood and screws. After the first
4' or 5' I went back to wire to finish stitching on
the side panels. After the side panels are stitched
on and the chine is fair, the side panels are glued
to the yellow cedar.
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Sheer clamps are made the same way the chine log
was. The upper side panels are epoxied to the chine
logs and sheer clamps. At this point the only pieces
of the boat that are epoxied together are the panels
that are fastened to the chine log and sheer clamp.
every thing else is held together with wire and
screws. I then use a long flexible piece of wood as
a batten to to lay along the hull and check for
areas that are unfair. If, for example, an area of
the chine where the two side panels meet is in to
far, I will knock out the chine log at that bulkhead
and wedge it out a bit. In the lower, left picture
notice the pieces of wood sticking out of the keel
run. This is an area between bulkheads that is
sagging a bit, so I cut small wedges to spread the
joint thus raising it. The aft edge of the bottom
panels also sagged in the center so I also used
wedges there to keep the panel flat along the
transom. One of the tremendous advantages of
building a stitch and glue boat upside down is the
ability to put all the hull pieces together and
still manipulate and shape the hull. When all is
fair, all the pieces are tabbed together with 3"x3"
pieces of biax, and when they have cured the wires
and screws can be pulled. On the inside of the hull
the transom is glassed to the bottom and side
panels, the side panels are glassed to the
bulkheads. and the inside stem area is glassed. The
lower chine and keel run will be glassed after the
hull us rolled over.
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1/4"
plywood is epoxied to the bottom for extra strength.
Because of the compound curves at the bow, the
plywood is ripped into 4" strips so it will contour
to the hull. The keel is glassed on and the entire
hull is covered with Dynel.
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After the hull is rolled over, all the glassing is
done from the chine to the keel. The bulkheads are
shaped and cut as per the plans.
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The
interior is all fit, glassed and sealed. Deck beams
will still need to be installed before the deck is
put on.
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The
side decks are made out of 3/4" plywood and the fore
deck is a layer of 1/2" plywood and a layer of 1/4"
plywood. The plywood joints are dished out a bit and
glassed with biax and then the everything is covered
with Dynel and epoxy sealed. The windshield, hatches
and rub rails are made and dry fit prior to paint.
They will all be finished off the boat.
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Painted, varnished and
ready for hardware.
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