Massey-Harris produced its Challenger farm tractor model From 1936 Until 1939 in United states with a Open operator station cabin and more than 14,000 units were build. Talking dimensions and weight, this model weighs 3900 lbs or 1769 kg has , 129.3 inches [328 cm] of length and 58 inches [147 cm] of height while maintaining a wheelbase of 78 inches [198 cm]. This tractor can fit ag tires of 5.50x16 front and 5.50x16 back . This Massey-Harris Challenger is powerd by a gasoline engine it has 247.7 ci or 4.1 L 4 cylinders the fuel tank capacity is 18 gal or 68.1 L. This machine has 4x2 2WD wheel drive system,4 forward and 1 reverse transmission system.