Maupin Woodstock

Jim Maupin of San Pedro, CA offered an inexpensive way to get into the action, with his homebuilt sailplane Woodstock, designed with the philosophy, “Build it light, build it small, build it cheap and sim-ple.” Only basic tools are needed. Woodstocks wing, designed by lrv Culver, is built around a single main spar, formed as a hollow box out 8 feet and as a c-section beyond. Ribs are sawn from ¼-inch fir plywood, glued to the spar fore and aft. Spar runs the full length of the wing. Wing forward of the spar is covered with 1/4 -inch birch ply as a D section. Fuselage and tail are equally simple to build. An info kit was $5, plans $105 ($115 overseas).

Woodstock was designed with a wing having an 18 % section for the root, 13 % at the tip and no twis. The principal design objectives were low cost and simplicity of construction. Douglas Air was used for all major structural parts and all tail and wing skins were birch. It first flew in 1978 and won the Sailplane Homebuilders Association design contest in 1984. A tail wheel is an option instead of a skid. The main wheel is fixed. Approach control is by wing top surface spoilers. As an option, wings of 13.1 m./ 43.0 ft.

Woodstock 15M
Wing span: 15 m / 49.2 ft
Wing area: 10.18 sq.m / 109.6 sq.ft
Height: 3.5 ft
Length: 19 ft
Empty Weight: 111 kg / 245 lb
Payload: 120 kg / 265 lb
Gross Weight: 206 kg / 455 lb
Wing Load: 22.69 kg/sq.m / 4.65 lb/sq.ft
Aspect ratio: 16.8
Airfoil: Culver
Seats: 1
L/DMax: 26.5 72 kph / 39 kt / 45 mph
MinSink: 0.79 m/s / 2.6 fps / 1.54 kt
Stall: 35 mph
Landing gear: single wheel
Load limit 5.0 G