Posted by Hugh MacKay on March 16, 2009 at 18:47:51 from (209.226.106.55):
In Reply to: How much plow? posted by ScottyHOMEy on March 16, 2009 at 08:16:36:
Scotty: Your Super C will pull 2x12 or 2x14 trailer plow quite handily because of the 36" rear tires, give a lot more rubber on the ground. They also hold 3 times the chloride.
The smaller tractors with 24" tires fall badly on trailer plows, and the B will be worse than the others. We're basically talking 10-20 hp per bottom, depending on conditions, and when you double that to 2 bottoms, the plow center line of draft must be very close to tractor center line of draft, almost impossible to do with a tractor as wide as the B.
On my farm over the years, I had the following plows No.8 - 2x14, one piont fast hitch 2x12, SA plow 2x12, No.60 - 3x16, No,60 - 4x16 and a 510 - 5x16 semi-mount. We pulled the No.8 - 2x14 behind H or 300 in sandy loam. The 130 and SA would not touch that plow even in the easiest going, yet they pulled those 2x12 mounted plows quite easily. The difference being trailer versus mounted plows, you just can't get enough weight on those 24" tires for traction. In those days my 130 had 12.4x24 with max chloride plus wheel weights. Today my SA and 130 don't have chloride, yet they pull the 2x12 mounted plow, even if I remove the wheel weights. I also pulled the 3x16 with 300, 4x16 with 560 or 656 and 5x16 semi-mount behind 656, why, because that centerline of draft was perfect. And that is exactly what you need to pull the maximum plow per hp. You'll also notice 656 pulled an extra bottom with semi-mounted plow. The weight transfer mounted and semi-mounted plows give tractors, probably ups the pounds per square inch rear tires have on ground by 30% to 60%.
Plain and simple, I've never seen any 25 hp, 24" rear tire tractor pull any more the a 1 bottom trailer plow. I can only assume those who tell you different are BS ing a bit.
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