Power Drifter Bill of Materials
MATERIAL LISTING: The listing is an approximation of
the lumber and plywood required to build the basic hull of
the respective models less seats (take materials for these
directly from Sheet 5 in consideration of options). Lumber
members can be grouped to purchase "random-random"
material which can be re-sawn to the sizes listed as a costs
savings. In the listing, 1" material thickness (first
number) is nominal, but widths (second number) are net.
Thicker stock (Stem) is nominal in thickness and width.
Lengths allow overage for trimming. If long lengths are not
available, use scarf-joined members.
PLYWOOD: All plywood should be at least AB Exterior or
Marine grade; Interior plywood is not acceptable except for
temporary forms. Douglas-fir or Mahogany-type panels will
suffice.
LUMBER: All lumber should be top quality, free from
defects, and of types proven in use in boats. Suitable woods
include vertical grain Douglas-fir, Alaskan cedar, mahogany
(including Philippine, Honduras, and African types), and good
quality Southern pine. Thicknesses given below are nominal
except as noted "NET". Widths are net. Total
lengths listed allow some overage for trimming, etc.
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MODEL:
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15'
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16.5'
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LUMBER:
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MEMBER
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NO. RQD/SIZE
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LENGTH
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Transom framing & tray beam
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2 - 1" x 3"
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7'
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7'
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Stem
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1 - 2" x 6"
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4'
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4'
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Cleats
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1 - 1" x 2"
1 - 1" x 3"
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4'
4'
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4'
4'
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Knee braces
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1 - 1" x 6"
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6'
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6'
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Keel
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1 - 1" x 3"
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14'
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16'
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Battens
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2 - 1" x 3"
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12'
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14'
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Inner chine
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2 - 1" x 2"
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14'
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16'
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Outer chine
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2 - 1" x 2"
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14'
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16'
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Inner sheer
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2 - 1" x 1-1/2"
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16'
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18'
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Outer sheer
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2 - 1" x 1-1/2"
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16'
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18'
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Tray cleats
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2 - 1" x 1"
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7'
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8'
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Side tray rails
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2 - 1" x 3"
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7'
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8'
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PLYWOOD: Listed by model. In addition to below,
each model requires one sheet, 4' x 8' x
3/4" "CDX" or similar for temporary
forms. See instructions for planking joining method
options.
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MODEL
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15'
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16.5'
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MEMBERS
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NO. SHEETS/SIZE
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NO. SHEETS/SIZE
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Side planking
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4 - 3/8" x 4' x 8'
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2 - 3/8" x 4' x 8'
2 - 3/8" x 4' x 10'
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Bottom planking/transom(*)
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1 - 1/2" x 4' x 14'
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1 - 1/2" x 4' x 16'
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Other items/transom initial layer
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1 - 3/8" x 4' x 8'
1 - 1/2" x 4' x 8'
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1 - 3/8" x 4' x 8'
1 - 1/2" x 4' x 8'
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(*)Full length panels can be made from shorter butt- or
scarf-joined panels to the noted length overall. Use
scrap pieces; second and third layers can be in two
halves, butted or scarfed.
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FASTENINGS: Flathead wood type, bronze or hot
dipped galvanized wood screws. Totals are approximate -
both models similar.
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1" #8
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1-1/4" #8
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1-1/2" #8
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2" #10
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500
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200
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200
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100
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ADHESIVES: Epoxy adhesives are advised
throughout the construction. These may be an epoxy
adhesive or epoxy resin. Epoxy resins should be used
with thickeners (silica or equal) per the instructions
with the resin and/or thickening agent. Due to the
noted options, the amount required is difficult to
estimate. A gallon container of epoxy should be
sufficient for all models.
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