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Regenerative Agriculture and Direct Drilling
Regen Ag and No-till Machinery
Triton direct seed drill
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<blockquote data-quote="Spud" data-source="post: 7308540" data-attributes="member: 78"><p>The key difference (other than hp) since those halcyon days is tyre width. </p><p></p><p>I used to plough with a Ford 5600 on 13.6r38, with wheel weights, pulling 4x12" furrows.</p><p></p><p>That became a 4x12" reversible on a 2wd MF399 on 16.9r38, but struggled in heavy going....so we put the 4wd 956XL turbo Nash on the plough....and broke the plough</p><p></p><p>That became 4x14" on an 8340 Ford, on 20.8r38, which again struggled for grip, the Maxxum with a heavier back end, and wheel weights (it was a loader tractor) on 16.9r38 pulled it much easier</p><p></p><p>5x14" (with press) fared fairly well on a 6290MF on 18.4r38, then a 6480 on 20.8r38 (but both needed weights and diff lock in tough going</p><p></p><p>6x14" on a MF 7495 on 20.8r42 went well, that thing did put the power down very well indeed (shouldn't of sold that tractor!)</p><p></p><p>We now have a 7f semi mounted vari width plough, usually hung on a 7620 MF on 20.8r42/16.9r30 wheels. Its amazing how well it goes really, a ton on the front and away she goes. </p><p></p><p>The key is grip, not power. An engine pulls best when its governing (that's the definition of 'Grunt') - the engine needs to pull down before grip is lost, then traction is maximised. Highest gear lowest rev kind of thinking.</p><p></p><p>I see people on 650&710 tyres revving and chewing and spinning pulling smallish ploughs with biggish horsepower. Put narrower wheels on and she'll go much better.</p><p></p><p>We until recently had two 7620's - virtually identical tractors, except the wheels. The one on the 20.8r42's would always outgrip the other on 620's, almost regardless of job. A narrow, but long footprint is far more effective than a short wide one. Think how a crawler works.</p></blockquote><p></p>
[QUOTE="Spud, post: 7308540, member: 78"] The key difference (other than hp) since those halcyon days is tyre width. I used to plough with a Ford 5600 on 13.6r38, with wheel weights, pulling 4x12" furrows. That became a 4x12" reversible on a 2wd MF399 on 16.9r38, but struggled in heavy going....so we put the 4wd 956XL turbo Nash on the plough....and broke the plough That became 4x14" on an 8340 Ford, on 20.8r38, which again struggled for grip, the Maxxum with a heavier back end, and wheel weights (it was a loader tractor) on 16.9r38 pulled it much easier 5x14" (with press) fared fairly well on a 6290MF on 18.4r38, then a 6480 on 20.8r38 (but both needed weights and diff lock in tough going 6x14" on a MF 7495 on 20.8r42 went well, that thing did put the power down very well indeed (shouldn't of sold that tractor!) We now have a 7f semi mounted vari width plough, usually hung on a 7620 MF on 20.8r42/16.9r30 wheels. Its amazing how well it goes really, a ton on the front and away she goes. The key is grip, not power. An engine pulls best when its governing (that's the definition of 'Grunt') - the engine needs to pull down before grip is lost, then traction is maximised. Highest gear lowest rev kind of thinking. I see people on 650&710 tyres revving and chewing and spinning pulling smallish ploughs with biggish horsepower. Put narrower wheels on and she'll go much better. We until recently had two 7620's - virtually identical tractors, except the wheels. The one on the 20.8r42's would always outgrip the other on 620's, almost regardless of job. A narrow, but long footprint is far more effective than a short wide one. Think how a crawler works. [/QUOTE]
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Regenerative Agriculture and Direct Drilling
Regen Ag and No-till Machinery
Triton direct seed drill
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