Sands Replica 1929 Primary Glider
| Replica 1929 Primary Glider | |
|---|---|
| Role | Glider |
| National origin | United States |
| Designer | Ron Sands Sr |
| Status | Plans available (2014) |
| Number built | 55 (1998) |
| Unit cost |
Plans US$40, kit total US$7644.14 (2015) |
The Sands Replica 1929 Primary Glider is an American high-wing, wire-braced single-seat, primary glider that was designed by Ron Sands Sr for amateur construction, with kits supplied by Wicks Aircraft Supply. The plans are now sold by Sands' son, Ron Sands Jr.[1][2][3][4][5][6]
Design and development
Sands developed his replica 1929-style primary glider from the original designs of that era. He promotes it as "much safer than hang gliders or ultralights... [an] excellent project for school or clubs".[1]
The aircraft is made from wood, tube and doped aircraft fabric. Its 32 ft (9.8 m) span wing is cable-braced from a king post and employs a Clark Y airfoil. Like all primary gliders the cockpit is just a seat mounted on the keel with no windshield fitted. The landing gear is a fixed skid, fitted to the underside of the keel. The aircraft is designed to be bungee launched from a slope or auto-towed. The aircraft can be disassembled for storage or ground transportation.[1][2][5][6]
Sands estimates that construction takes 200 hours. In 2011 plans cost US$40 and included two 24" by 36" (60 X 90 cm) sheets, a materials list and "Safety Tips". In 2015 the available Wicks five part kit totaled US$7644.14.[1][2][4]
Variants
Plans for a steel tube fuselage version are also available.[1][2]
Specifications (1929 Primary Glider)
Data from Purdy, Sands and Wicks[1][2][4]
General characteristics
- Crew: one
- Length: 17.67 ft (5.39 m)
- Wingspan: 32 ft (9.8 m)
- Height: 7 ft (2.1 m)
- Wing area: 157 sq ft (14.6 m2)
- Airfoil: Clark Y
- Empty weight: 175 lb (79 kg)
- Gross weight: 375 lb (170 kg)
Performance
- Maximum speed: 45 mph (72 km/h; 39 kn)
- Cruise speed: 38 mph (33 kn; 61 km/h)
- Stall speed: 30 mph (26 kn; 48 km/h) clean
See also
- Aircraft of comparable role, configuration and era
- Jongblood Primary - another modern primary glider design
- Related lists
References
- 1 2 3 4 5 6 Purdy, Don: AeroCrafter - Homebuilt Aircraft Sourcebook, page 314. BAI Communications. ISBN 0-9636409-4-1
- 1 2 3 4 5 Sands, Ron (June 2010). "Replica 1929 Primary Glider Plans". Retrieved 28 September 2011.
- ↑ Sands, Ron (June 2010). "Ron Sands Replicas". Retrieved 28 September 2011.
- 1 2 3 Wicks Aircraft Supply (n.d.). "Aircraft Kits - Experimental Replica Primary Glider". Retrieved 1 March 2014.
- 1 2 Downey, Julia: 2002 Plans Aircraft Directory, Kitplanes, Volume 19, Number 1, January 2002, page 28. Kitplanes Acquisition Company. ISSN 0891-1851
- 1 2 Downey, Julia: 2003 Plans Aircraft Directory, Kitplanes, Volume 20, Number 1, January 2003, page 27. Primedia Publications. ISSN 0891-1851