Horsepower of F-30 and M

F-30, Drawbar - 20.27 H.P. Belt - 30.29 H.P
observed max hp M, draw bar 33.05, belt 36.66
 
If you go back to your original post and read it, Tom Fleming posted the numbers in one of his replies
 
These numbers speak volumes about how tractor efficiency improved in a short amount of time. I'm guessing that the tested F-30 was a steel-wheeler while the M was on rubber. Note how the F-30 could only get 2/3 of its belt power to the drawbar. The M on the other hand could deliver 90% of its belt power to the drawbar.
 
also the F-series were running on keresene or distillate during those tests. The M probably was tested on gasoline. Gasoline makes more HP than distillate.It would be interesting to see how an F-20 or F-30 performed with rubber tires, gas manifold and the high altitude pistons most were equipped with by then by farmer upgrades to make them more useful.
 
F30 Kerosene on steel, Nebraska test #198, 32.80 belt hp, 24.85 db hp, 4157 max lbs pulled @ 2.24 mph

M Distilate on rubber, Nebraska test #327, 34.82 belt hp, 30.65 db hp, 4363 max lbs pulled @ 2.19 mph

Harold H
 
Iam not sure about the HP. I farmed with both and I know that the M is lot easier to operate all day.They both pulled a 3X14 plow and a 10' disc but the F30 did not have hyd. so the implements were different.
 

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