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Post by eppie on Nov 26, 2009 21:04:50 GMT 1
If you really want to get high HP onto the ground why not just buy a Case Quadsteer? Good point. It has the same drawbacks on the road as the Deutz (rubber wear) but a much lower specific ground pressure. |
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Post by eppie on Nov 30, 2009 19:46:14 GMT 1
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dom
Junior Member
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Post by dom on Dec 12, 2009 23:17:45 GMT 1
Wow that Deutz 4 axle looks a lot like that Versatile concept that wasn't. From 30 odd years ago.
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Post by CMunger on Dec 26, 2009 22:23:11 GMT 1
Are any of the farms in Europe using the rubber track Caterpillars, John Deere tractors. We have always felt, in the western US, the most efficient use of drawbar horse power was/is with tracks.
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Post by eppie on Dec 27, 2009 12:12:23 GMT 1
Chuck, the only tracked machines i've seen in Holland were pulling large scrapers to level farmland, or drainage machines: The jobs that require higher traction rates (machine weight/drawbar pull) than any agricultural job.
You see some crawlers in England's arable areas on clay soil, at least on Youtube videos.
Wheels are plenty enough to transfer traction if the drawbar pull is relatively low, and the speed high, like direct drills. In that case the power is transferred at higher speeds which automatically means that the absolute force is lower, which means less wheel spin.
Tracks dont like high speeds either.
I think the conception in the midwest is from the era that they ran 200hp 2wd's on bias ply tires.. yes, in that perspective, crawlers are far superior. But i think in average conditions, properly sized and inflated tires can do what a crawler can do, even at a higher theoretical ground pressure, because the wheels follow the ground contour better.
Wheel spin wastes lots of fuel. But at lower traction efforts and higher speeds, tires cause less rolling friction than any track system. I think each system has its own specific applications. High traction or hillside jobs, and/or on heavy clay: for tracks. Higher speeds, lower traction, medium to light soils, for wheels.
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adaml
New Member
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Post by adaml on Dec 27, 2009 20:05:59 GMT 1
Are any of the farms in Europe using the rubber track Caterpillars, John Deere tractors. We have always felt, in the western US, the most efficient use of drawbar horse power was/is with tracks. Yes, they seem quite popular, but very expensive. The problem we have here is transport width and tracks can get around the problem of wide tyres and or duals. We had a Challenger on demo a while ago, just for a look see. The verdict was it was good, but sometime you need wheels and it would need some added investment in machine more suited to drawbar work. Then there is the issue of how it would work in the wet. The 8680 that came recently has proved that it can put it's (considerable) power to the ground |
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