The Mace-Trefethen R-2 Shark is an American single place racing aircraft designed in the 1970s.

The R-2 is a single seat, low-wing aircraft with conventional landing gear. The wooden construction aircraft features an elliptical wing.^[1]

At the 1970 Reno Air Races Mace achieved a speed of 198.53 mph (319.50 km/h)

Data from Air Trails

General characteristics

• Crew: 1
• Length: 18 ft 6 in (5.64 m)
• Wingspan: 16 ft (4.9 m)
• Height: 4 ft 3 in (1.30 m)
• Wing area: 70 sq ft (6.5 m²)
• Airfoil: NACA 23010
• Empty weight: 540 lb (245 kg)
• Gross weight: 800 lb (363 kg)
• Powerplant: 1 × Continental O-200 horizontally opposed piston aircraft engine, 100 hp (75 kW)
• Propellers: 2-bladed

Performance

• Maximum speed: 213 kn (245 mph, 394 km/h)
• Range: 170 nmi (200 mi, 320 km)