https://en.wikipedia.org/wiki/Tupolev_ANT-25

General characteristics

• Crew: three
• Length: 13.4 m (44 ft 0 in)
• Wingspan: 34 m (111 ft 7 in)
• Height: 5.5 m (18 ft 1 in)
• Wing area: 87.1 m² (938 sq ft)
• Empty weight: 3,700 kg (8,157 lb)
• Gross weight: 8,000 kg (17,637 lb)
• Fuel capacity: dubler (1936) – 5,880 kg (12,963 lb) + 350 kg (772 lb)
• Powerplant: 1 × Mikulin M-34 V-12 liquid-cooled piston engine, 560 kW (750 hp)

Performance

• Maximum speed: 246 km/h (153 mph; 133 kn)
• Range: 7,200 km (4,474 mi; 3,888 nmi)
• Endurance: 48 hours
• Service ceiling: 2,100 m (6,900 ft) fully loaded
  
  • 7,850 m (25,755 ft) lighly loaded