Gregor GR-1

The Gregor GR-1, also called the GR-1 Continental and the GR-1 Sportplane was a biplane with a tail-wheel undercarriage developed by Michael Gregor^[1]

GR-1
Role	Biplane trainer
National origin	United States
Manufacturer	Gregor Aircraft
Designer	Michael Gregor
Introduction	1930
Number built	1

Development

The Gregor GR-1 was intended to be a light, low cost, training aircraft for depression-era customers. Gregor was based at Hangar B at Roosevelt Field in New York.^[2] The aircraft was a conventional geared biplane with two open cockpits in tandem with oversize interplane struts.^[3]

Variants

Gregor GR-2^[4]

Specifications (GR-1)

Data from Skyways

General characteristics

• Crew: 1
• Capacity: 1
• Length: 19 ft 3 in (5.87 m)
• Upper wingspan: 28 ft (8.5 m)
• Lower wingspan: 21 ft (6.4 m)
• Height: 7 ft 7 in (2.31 m)
• Empty weight: 900 lb (408 kg)
• Gross weight: 1,530 lb (694 kg)
• Powerplant: 1 × Wright-Gypsy L-320 4-cyl air-cooled in-line piston engine, 90 hp (67 kW)

Performance

• Maximum speed: 87 kn (100 mph, 160 km/h)
• Rate of climb: 1,000 ft/min (5.1 m/s)