Hello,
Thanks Lang.
Having had some good looks at this I can not understand there being little wheel slip or ground compaction behind those two steamer wheels.
Guessing 9 inches per share would plough would cover 33 feet, at ten inches nearly 37 feet.
Two horses per share would have 88, double needed drawbar HP for tractor = 176 Hp, then double for engine HP = 350.
An articulated 4WD tractor on duals would show wheel slip.
David.
