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Implement Alley Discussion Forum

Re: Hp rule of thumb for a disk

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01-02-2013 20:17:32

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The trouble is there are heavy offset disks that take 350 hp tractors to pull less than 20 feet, and there are little finishing disks with the blades worn down to 14-15 inches on easy ground that don't need 40 hp for a 12 foot disk......

In general I'd put a 10 foot average finishing dik behind a 50 hp tractor. Would be a heavy pull in spring in plowed soft ground, and wouldn't hardly know it's there in hard fall bean stubble.

If you have new, bigger blades, or you are weighting it down and trying to work hard with it, a few more hp don't hurt.

Then again, I recall pulling the 12 foot trailing disk with the 36hp Farmall as a kid in just the right conditions and getting along with it.

Simple and easty answer, eh? :)


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01-03-2013 06:55:49

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 Re: Hp rule of thumb for a disk in reply to paul, 01-02-2013 20:17:32  
Paul, I think you are pretty close on those figures. I know I have pulled a 13' Keawanee behind a 38 HP John Deere A but at times it was all the 65 HP Ford 5000 wanted. And at times the 9' Mccormick that was normal for the Deere was all a 52 HP rated Ford 4000 with the 38" wheels wanted but again at times the 28 HP Deere B would handle the McCormick. And the 9N Ford the disk sold for it was a either 6 blade that cut 7' or 7 blade that cut 8' but then that disk was light enough in weight that 5 guys, one on each gang and one on toung could pick it up and carry it, not unlike the wheel disks of later.

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