O'Neill Aristocraft II

The Aristocraft II was a six-place homebuilt aircraft designed by Terrence O'Neill.[2]

Aristocraft II
Role Homebuilt aircraft
National origin United States
Manufacturer O'Niell Aircraft Company
Designer Terrence O'Neill
Number built 1
Developed from Waco Aristocraft[1]

Design and developmentEdit

The Aristocraft II was a redesigned aircraft built off the prototype airframe of the WACO Aristocraft. The Franklin-powered Aristocraft pusher was rebuilt using the wings and most of the internal structure of the original. The layout was drastically changed from a twin-tailed, mid-engined, pusher to a conventional tractor arrangement. The intent was to develop a homebuilt aircraft from the design with the flexibility to carry six passengers, or fewer people with extended range.[3][4] An effort was made to certify the design, under the name Model W Winner but money ran out before completion, with only two orders.

The Aristocraft II was a strut-braced, high-wing, tricycle gear, six-passenger aircraft designed for Franklin or Lycoming 200 hp (149 kW) engines.[5] The fuselage was made of welded steel tubing with aluminum skin. The cowling was split vertically, and could hinge open for maintenance.[6]


The standard engine was a six-cylinder Lycoming, however plans were drawn for a 245 hp (183 kW) Jacobs L-4MB radial engine installation and also for a Continental R-670 radial installation. This specified that the engine would be mounted closer to the firewall and also incorporated conventional landing gear, a 93 in (236 cm) propeller and the outward appearance of "Mr. Muligan", this evolved into the O'Neill Magnum.[7]

Specifications (Arisocraft II)Edit

Data from Sport Aviation, Air Trails Summer 1971

General characteristics

  • Crew: one
  • Capacity: five passengers
  • Length: 25 ft 10 in (7.87 m)
  • Wingspan: 36 ft 10 in (11.23 m)
  • Height: 8 ft (2.4 m)
  • Wing area: 190 sq ft (18 m2)
  • Airfoil: NACA 4415
  • Empty weight: 1,800 lb (816 kg)
  • Gross weight: 3,300 lb (1,497 kg)
  • Fuel capacity: 76 gal
  • Powerplant: 1 × Lycoming IO-360 four-cylinder, direct-drive, horizontally-opposed, air-cooled, piston aircraft engine, 200 hp (150 kW)
  • Propellers: 2-bladed
  • Maximum speed: 120 kn (140 mph, 230 km/h)
  • Cruise speed: 110 kn (130 mph, 210 km/h)
  • Stall speed: 48 kn (55 mph, 89 km/h)
  • Range: 700 nmi (800 mi, 1,300 km)
  • Service ceiling: 15,000 ft (4,600 m)
  • Rate of climb: 500 ft/min (2.5 m/s)

See alsoEdit

Aircraft of comparable role, configuration, and era

  • Waco Aristocraft - The last aircraft built by the WACO company. One model rebuilt and named Aristorcraft II.


  1. ^ "Magnum, AMATEUR BUILT, BEAVER-TYPE". Sport Aviation: 17. March 1984.
  2. ^ Air Trails: 76. December 1971. Missing or empty |title= (help)
  3. ^ "Aristorcraft II". Retrieved 28 January 2012. CS1 maint: discouraged parameter (link)
  4. ^ Don Dwiggins. Build your own sport plane: with homebuilt aircraft directory. p. 102.
  5. ^ Sport Aviation: 30. December 1970. Missing or empty |title= (help)
  6. ^ Sport Aviation: 13. October 1968. Missing or empty |title= (help)
  7. ^ "Maganum". Sport Aviation. March 1984.