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Mong MS1 Sport / MS3 Sport
The first Mong Sport was built as a personal aircraft by the designer Ralph Mong, Jr, first flown on May 1, 1953 and plans for homebuilding were provided afterward, due to demand.
Mong Sport
The original Mong MS1 Sport biplane was built around a Continental A65 65 hp (48 kW) engine. The biplane has an A frame shaped centre wing support. The biplane did not require expensive, drag producing support wires, using steel tubing instead. All Mong models use lift struts connected to the outer sections of the wings instead of flying and landing wires. Some builders installed the centre pylon support as an alteration to the design. But this alteration is not supported, recommended or condoned by Mong Aircraft. The fuselage is steel tube with aircraft fabric covering.
Costing approximately $1750 to build in 1971, original plans were still available for $100.00, plus shipping, out of the USA. Over 400 sets of plans for the aircraft had been sold.
Ed Fisher of Raceair Designs purchased the design rights in 1993 and designed a new set of wings that have 12 square feet more wing area, aimed at lower stall speeds. A new MS-3 airframe puts the control column under the longerons, which lowers the seat about 2".
By 2019 Michael Stewart was owner of Mong Aircraft.

 A Mong is a loop/roll/spin positive maneuver sport Biplane. For a sportplane Mong, recommended is the O-200 Continental for power.
In the mid-1960s, a biplane class was added to the Reno Air Races. The Mong Sport met the basic qualifications, and has been extensively modified over the years by builders to be used as a biplane racer. In 1965, Bill Boland won with his "Boland Mong" at 148 mph and again in 1967 and 1970 with speeds of 151 mph and 177 mph respectively. The Mongster won the 1968 Biplane class of the Reno National Championship. Long Gone Mong won in 1987 and 1989.
A highly modified Mong Phantom of Andrew Buehler and Tom Aberle with carbon fibre wings won in 2005 piloted by Andrew Buehler with 230,8 mph ( a 10 mph lead to the second place), and in 2006 with a speed of 251.958 mph, and has since raised the record to 284.454mph.
The Mong is the basis of the Micro Mong that Ed Fisher designed.
LSA Variant:
Green Sky Adventures Micro Mong
Mong MS1 Sport
Engine: 1 × Continental A65, 65 hp (48 kW)
Length: 14 ft 1 in (4.29 m)
Wingspan: 16 ft 10 in (5.13 m)
Height: 5 ft 6 in (1.68 m)
Wing area: 80 sq ft (7.4 m2)
Empty weight: 550 lb (249 kg)
Gross weight: 970 lb (440 kg)
Fuel capacity: 16 US gallons (61 litres)
Maximum speed: 100 kn; 185 km/h (115 mph)
Cruise speed: 96 kn; 177 km/h (110 mph)
Stall speed: 43 kn; 80 km/h (50 mph)
Service ceiling: 13,000 ft (4,000 m)
Rate of climb: 1,000 ft/min (5.1 m/s)
Crew: 1
Wing area: 80 sq. ft.
Empty weight: 560 lb
Fuel capacity: 8 USgal.
Stall speed: 60 mph

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