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Brush hog size

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Bruce

07-01-2003 19:30:06




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I have a New Holland 1920 4WD tractor with 12X12 shuttle shift. I need info to choose a good sized brush hog for rolling and hilly land clearing and mowing of fields. Also, will this tractor drive a 60" rotovator in clay, hardpack soil? Let it rip, I value all your input!!!
Thanks,
Bruce




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Robert in W. Mi

07-03-2003 15:44:55




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 Re: Brush hog size in reply to Bruce, 07-01-2003 19:30:06  
If it was my tractor, i'd get a 5' med duty brush hog. I'd also make sure it has the slip clutch in the drive line. Personally, i like the Woods Brush Bulls. Keep in mind, just because it's a 5' hog, doesn't mean in really tough conditions that you have to take a full 5' cut!!

You said rotavator, so i'm assumeing you are talking Howard. (only Howard has rotavators) In tough field conditions 60" will be too much for 29 hp. For gardens, you probably can get away with it, but i wouldn't buy one that big if it was my tractor.

I have (3) Howards, and i don't find i need 10hp per inch, but "if" you get the multi speed gear box, use a higher gear, and close the back door, and go full depth, and have tough conditions the 10hp per inch will be close. Thing is, in all the years i've been doing custom rotavateing, i've NEVER had to do all of the above!

I don't find that hard clay takes near the hp that wet heavy soil takes!! Clay just gets ground up and is left behind, wet soil balls up and goes around and around pushing a berm ahead of the rotor blades. NOW, that takes power!!! I've made most of my $$$ rotavateing with an 45hp Agco tractor useing what today would be, a HR20 72" with slectatilth gear box.

Clay would be hard on the machine, but really don't take a lot of extra hp. I get that all the time, someone saying i can't rotavate there clay, cause they have a heck of a time plowing it!!! It just doesn't work that way. When i leave they are happy campers..

Think about getting something like a 50" for your tractor, and at least an HR8, a HR10 would be better if you plan to work it hard.

Robert

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Roy in UK

07-03-2003 03:14:23




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 Re: Brush hog size in reply to Bruce, 07-01-2003 19:30:06  
It would be totally useless on a Rotovator that size especially if your land is like that. They really are power hungry things.I have knocked up some nice black peaty garden soil in an old orchard with a 70" on a MF 135, using several passes, going a little bit deeper every time but in 'normal' working conditions you need say about 1hp an inch... so a 60 inch really needs a 60hp tractor. We ran a 100" on a MF 1100 and on our loamy soil that made her growl!

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Jerry (AL)

07-02-2003 16:36:57




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 Re: Brush hog size in reply to Bruce, 07-01-2003 19:30:06  
Look up Bush Hog on your search and it has rated HP for certain sizes of hogs they make and sell. They recommend 30 HP minimum for a 6 foot. This is a light duty cutter I looked under. The size they would recommend would be a 5 foot for your tractor. Although your tractor would probably pull it well if you kept the grass down fairly short, still you would be on the very bottom of the recommended HP range for that size cutter.

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Fighting suburbia in NC

07-02-2003 11:57:57




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 Re: Brush hog size in reply to Bruce, 07-01-2003 19:30:06  
If it is 29 HP then a 6' bush hog in thick grass will bog it down a couple of gears. I have used a 6' cutter an old Ford 2000 SOS (35 HP) in the mountains of Virginia on sloping land and found the 10 speed SOS to be very useful for keeping the correct speed for the conditions. As for the rotavator you will need twice the HP or half the 'vator in hard soil. If you go real slow and don't mind multiple passes to get the ground tilled properly you might be OK. If you have a heavy tiller you will punish the tractor if you hit anything. My 6' Howard Select-A-Tilth is a load on a utility tractor but my 270 Leyland (75 HP and CatII) pulls it with ease.

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BB

07-02-2003 04:09:07




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 Re: Brush hog size in reply to Bruce, 07-01-2003 19:30:06  
I believe the NH1920 has 29 PTO HP. I run a standard duty 6' rotary cutter on my JD950 which has 27 PTO HP. I may have to slow down quite a bit if the grass is really green, heavy, and tall, but it does a good job. If I keep it mowed regularly, I can run about as fast as I want.
Can't comment on the rotovator.



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Dana

07-02-2003 03:31:42




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 Re: Brush hog size in reply to Bruce, 07-01-2003 19:30:06  
I kind of depends on what kind of horsepower this thing has.



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