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Ron's T38 P2
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Oct 2001 |
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Ron Hall has sent in this article
on the planning for his modified Tiki 38 cockpit/pod. |
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Years
of being wet and cold in small boats (30 years, 30 feet or less, no
dodger/no bimini) has left me with different ideas about the level of
comfort I can endure. So... since I can't draw things out very well on
paper (angles meeting angles meeting curves) I built a mockup out of
doorskin (1/4 inch cheap ply) and framing lumber to work out the
appearance, sizes (seats height, dodger height, etc.) and arrangements
(console, helm seat, awning support, etc. The thicknesses and the exact
construction (this is all put together with drywall screws) will change in
the final, as will some of the overall dimensions, but this is our current
idea, and I thought I would put it out on the web to generate interest and
some constructive criticism. |
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JPEG
851 |
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JPEG
851 shows the mockup from the front. The lower third sits below deck
level, with the front of the cockpit sitting over the beam, forming a
shelf which supports the structure in the front. (The rear of the cockpit
similarly sits over the 3 beam., supporting the rear.) The mast casing is
the vertically framed opening between the windows, and in the real cockpit
will extend down through the front piece to the shelf to allow the mast to
sit on the beam. The supports for the roof are placed on the outside of
the cockpit sides at the same angle, with plywood framing for lexan
windows (removeable) in the front. The plywood window frames are there to
brace the mast case (provide fixity for the lower part of the mast) and to
strengthen the entire roof structure. The roof will be a ply-balsa-ply
sandwich like the decks, with a hardwood strut connecting both sides in
front of the mast. A metal horse (probably 18 mm steel rod or 3/4 inch SS
pipe) will stretch across the front of the roof and roof strut to form a
traveler for the foresail, with the controls for sheet and traveler led
aft to the back of the roof. (I'm afraid a wire traveler would allow the
foresail blocks to beat up the mast and the front of the cockpit.) The
sides of the cockpit are a little lower than the JWD design; the coachroof
is only about 6 inches taller than their design at the center so we have
added some overall height to the cockpit but the design still presents a
fairly low profile. The dodger on top of the roof is about 6'4" tall
(I'm 6'2") and is higher than I would like visually but it has to be
that high to allow standing headroom under the sun covering /rain awning
that fits between the dodger and the rear awning support. The main mast
was built one foot taller to allow the sail to clear the dodger and rear
SS rail. The dodger windows are also removeable as is the dodger itself.. |
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JPEG
843 shows the rear of the mockup, with the PVC pipe representing SS. The
upper pipe will be bent to follow the profile of the dodger, and supports
the awning. The lower pipe with the two intermediate supports forms a back
for sitting on the back ledge of the cockpit. The seat support (lower
pipe) will be bent back a couple of inches, and the shelf extended aft
beyond the cockpit rear piece to provide more sitting area. We are
considering adding winch pads and a winch either outboard as far aft as
possible (but still allowing the handle to clear the stern rail) for the
jib sheets, but really hate the idea. Would be interested to know if the
jib could be handled by tackles (2 or 3 to one) one the sheet rather than
winches. |
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JPEG
840 shows the console and interior seats. The seats are 20 inches wide
(per JWD plan), but at a height of 15 inches (port) and 13 inches
(starboard) at the front, sloping one inch to the back. The consensus
among people of various sizes was that the taller seat was more
comfortable, but would probably be too tall if cushions were added, so the
actual cockpit will have the seats at 14 inches. The seat fronts will be
angled back some and the seat itself finished with a bullnose to protect
the ends of the ply. The console has here only a front and back. The dual
lever motor controller sits on the shelf at right, with the compass and
GPS niche on top. The 24 inch wheel (the cardboard one in the mockup is
only about 21 inches) is offset to port, so the boat can be driven either
from the central helm seat or from the port seat. Storage areas under the
seats will be accessed by cutouts. We're considering adding a small table
between the front of the cosole and the mast casing with a shallow storage
area for flashlights, horns, etc. underneath, but don't want to add a lot
of furniture until we see how it works on the water. |
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JPEG841 |
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JPEG
841 shows the central helm seat and rear seat back. The rear seat back
will be slats that fold up to extend the seat formed be the top ledge at
the very rear. The helm seat will also be slats, and fold up against the
seat back to allow more room for standing and driving the boat. The side
windows under the roof can be closed off by flexible plastic. Mainsheet
and traveler controls enter the cockpit on each side with cleats on the
rear seat back. |
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Have
include a couple of shots of the build, which of course has taken much
longer than planned and impacted virtually the entire house. The shed
(interior shown in JPEG 021) and the cockpit mockup occupy most of what
used to be the deck. We have just finished glassing the three main
crossbeams and are beginning to prime them and other pieces, like the
rudder. The shed consists of 4- inch PVC pipe covered by tarps, and is
pretty well protected from the wind by the deep creek valley and
surrounding bamboo, but has to be de-snowed from the inside during the
winter. |
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JPEG
857 show the upstairs interior. I had started to remodel (moving and
replacing the central stair, ripping out the kitchen, etc.) so we have
moved into the apartment downstairs and left most of the upstairs to the
boat. The picture shows the second mast ready for finishing, sitting on
the mast table. The uprights support a shelf for stock (at the very top),
then a shelf for the completed mast planks before assembly of the mast,
and then the mast in carpeted holders. The mast table (two nine inch wide pieces
of 1/2 inch ply sandwiching the straightest 2X2's I could find screwed
together into a 34 foot long table) sits on the middle shelf when the mast
is being planed and sanded. The plastic you see everywhere forms a tube
down the center of the house to try to contain some of the dust. The clamp
rail keeps the clamps under control (although most of them have gone off
to other duties here). The mast sanders (24 inch belt sander discs with
PVC and rope handles on them) are also hanging from the clamp rail. The
picture is taken looking in the front door, with the mast going all the
way to the end wall of the house; the masts go directly out the door,
across the neighbor's fence and into the street, where we can turn them
enough to get them into the back yard for storage. |
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Ron Hall
2001 |
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This page was last updated on 10-Oct-2001
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