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hp required to tow plant trailer

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Hills kill tractors, even the ones with 300+hp. They make very inefficient use of transmitting power to the road, fully loaded trucks with the same power would fly up the same hills a tractor would crawl up.

 

Bob

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7 hours ago, aspenarb said:

Hills kill tractors, even the ones with 300+hp. They make very inefficient use of transmitting power to the road, fully loaded trucks with the same power would fly up the same hills a tractor would crawl up.

 

Bob

How does this work out when say , dragging a plough through the dirt . I thought it was all about the torque . Surely this would apply to hills ?

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8 hours ago, aspenarb said:

Hills kill tractors, even the ones with 300+hp. They make very inefficient use of transmitting power to the road, fully loaded trucks with the same power would fly up the same hills a tractor would crawl up.

 

Bob

Problem is with 300hp tractors is they weight 8-12t.... power to weight will be shite. then a fancy gearbox that will drain hp for fun. 

 

I know what your saying about wagons though. Is it just gearing at the end of the day

 

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28 minutes ago, Stubby said:

How does this work out when say , dragging a plough through the dirt . I thought it was all about the torque . Surely this would apply to hills ?

Tractors are designed to have all the torque at low speeds and usually then they're powering a machine behind them as well so they have to sacrifice higher end speed in the gearing.

 

They'll pull anything up a hill just not very fast.

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Not so sure I would want a 14ton machine on a trailer behind any tractor, 14 ton is the dry weight, add in the fluids and head it's probably nearer 15 ton, chuck on the grab tank, normal clutter and the extra weight of a trailer that will poke up with the load and its all getting a bit too much. It's a lorry job.

 

Bob

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15 hours ago, gdh said:

Tractors are designed to have all the torque at low speeds and usually then they're powering a machine behind them as well so they have to sacrifice higher end speed in the gearing.

 

They'll pull anything up a hill just not very fast.

That's what I meant . Hills don't " kill " them . As you say they will pull a lot up a hill , not very fast but nothing will stop it . Then they are not very fast anyway .

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My little Same Dorado 86Hp (3.5t tractor) had up to 11 tons behind it at times, but mainly around 6-8t, it always surprised me how well it managed it but yeah hills would be 7mph jobs sometimes on long uphill drags. But then used a farmers 130hp new Holland to pull the same trailer and in all honestly didn’t find it that much quicker or better on the hills! 

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17 hours ago, Stubby said:

How does this work out when say , dragging a plough through the dirt . I thought it was all about the torque . Surely this would apply to hills ?

When dragging a plough you are moving at 4-8 mph , like the others said, its all about gearing. They will pull anything at low speeds ;)

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Big HP is more about powering bigger, faster, stronger PTO implements and strong hydraulic pumps than about increasing actual "pulling power" for trailer work. You might get a few more kph on the clock, but how much time does that really save you on the average length hill? 

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