Piper L-4 Grasshopper vs. Kaman K-MAX

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Piper L-4 Grasshopper versus Kaman K-MAX
6.86 m 22 ft 5 in length 15.85 m 52.0 ft
2.03 m 6 ft 8 in height 4.10 m 13.5 ft
10.72 m 35 ft 2 in wingspan
1 x Continental O-170-3 piston engine engines 1 x Honeywell T53-17 turboshaft engines
Approximately 65 hp thrust per engine 1,600 hp
Approximately 65 hp total thrust 1,600 hp
1,220 lb 553 kg MTOW 2,721 kg 6,000 lb
306 km 165 nm range 370 km 200 nm
65 mph 105 km/h cruise speed 185 km/h 115 mph
Pilot and observer capacity 4.1
rotor diameter 13.2 m 43 ft 4 in
rate of climb 6.7 m/s 1,318 ft/min
Please note that these values are indicative and actual values can vary based on specific engine models and configurations.