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.

MODEL: 15' 16.5'
LUMBER:
MEMBER NO. RQD/SIZE LENGTH
Transom framing & tray beam 2 - 1" x 3" 7' 7'
Stem 1 - 2" x 6" 4' 4'
Cleats 1 - 1" x 2"
1 - 1" x 3"
4'
4'
4'
4'
Knee braces 1 - 1" x 6" 6' 6'
Keel 1 - 1" x 3" 14' 16'
Battens 2 - 1" x 3" 12' 14'
Inner chine 2 - 1" x 2" 14' 16'
Outer chine 2 - 1" x 2" 14' 16'
Inner sheer 2 - 1" x 1-1/2" 16' 18'
Outer sheer 2 - 1" x 1-1/2" 16' 18'
Tray cleats 2 - 1" x 1" 7' 8'
Side tray rails 2 - 1" x 3" 7' 8'

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.
MODEL 15' 16.5'
MEMBERS NO. SHEETS/SIZE NO. SHEETS/SIZE
Side planking 4 - 3/8" x 4' x 8' 2 - 3/8" x 4' x 8'
2 - 3/8" x 4' x 10'
Bottom planking/transom(*) 1 - 1/2" x 4' x 14' 1 - 1/2" x 4' x 16'
Other items/transom initial layer 1 - 3/8" x 4' x 8'
1 - 1/2" x 4' x 8'
1 - 3/8" x 4' x 8'
1 - 1/2" x 4' x 8'
(*)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.

FASTENINGS: Flathead wood type, bronze or hot dipped galvanized wood screws. Totals are approximate - both models similar.
1" #8 1-1/4" #8 1-1/2" #8 2" #10
500 200 200 100
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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