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Tractor Talk Discussion Forum

Tractor hp related to size of bushhog.

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Hedge

06-19-2004 21:59:37
207.48.35.172



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Can anyone tell me what the conversion rate of tractor horsepower is to the size of bushhog it will operate in moderately cutting grass and small brush without over working a tractor? Will a 65hp tractor handle a 10 ft. bushhog or more or less? Thanks.




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wolfy

06-22-2004 19:22:29
68.112.102.54



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 Re: Tractor hp related to size of bushhog. in reply to Hedge, 06-19-2004 21:59:37  
Not all 10 ft rotary mowers require the same power. For example, we have a 7 ft stiff blade & a 6 ft stump jumper style - the 7 footer takes less power to run. About 7 hp per foot of cut is a good rule-of-thumb.



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Noah W

06-20-2004 21:33:11
66.44.248.171



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 Re: Tractor hp related to size of bushhog. in reply to Hedge, 06-19-2004 21:59:37  
All depemds on the gear box rating of the "rotary cutter" that the manufacturer says it can handle. Example: Put a 40hp gearbox rated mower on a 50hp tractor and you can screw it up.(gearbox that is, if the shear pin doesn't break). Put it on a 40hp tractor and the pin should break (no harm done, if the pin breaks, to either tractor or mower). Less than 40hp tractor and you can screw the tractor up. It will break before the gearbox or shearpin. As long as the mower and tractor seem to be working without "loading up", it does not matter what the HP rating is. #2 bolts are generally used for the shearpin.

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buickanddeere

06-20-2004 11:12:13
64.10.41.23



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 Re: Tractor hp related to size of bushhog. in reply to Hedge, 06-19-2004 21:59:37  
Live power and tires that don't go flat are the main concerns. Even the wonder glob anti leak gell won't keep thorns from flattening my F-2 4 ply three rib 6:00-16's. Looks like 8 ply steel belted radials maybe the cure.



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49 Cubber!

06-20-2004 08:58:59
206.74.236.72



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 Re: Tractor hp related to size of bushhog. in reply to Hedge, 06-19-2004 21:59:37  
I have a 6ft 3pt bushhog I pull with my M.Dont know the brand.I also have pulled the same bushhog with my H.M in 4th H in 3rd.



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Jon

06-20-2004 06:23:05
66.209.40.194



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 Re: Tractor hp related to size of bushhog. in reply to Hedge, 06-19-2004 21:59:37  
For what it's worth dept:
I have a 95 H.P. Case-IH 1898 that drives a 15 foot Rhino batwing. It will bog down in heavy cutting, but for most applications its fine.

And a 45 h.p. case that drives a 6 foot mower, with the same results.



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Coloken

06-20-2004 05:54:58
67.72.98.58



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 Re: Tractor hp related to size of bushhog. in reply to Hedge, 06-19-2004 21:59:37  
6 foot bush hog with dull blades works nicly with a SC Case (30+ HP). Tall wheat grass kind of makes it work. Some of those rqurements make me think they are cutting stuff like wet wire or hardwood trees. Guess it all depends....



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RickB

06-20-2004 04:48:14
205.231.145.249



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 Re: Tractor hp related to size of bushhog. in reply to Hedge, 06-19-2004 21:59:37  
It depends on what you are cutting and how fast you want to cut it. I have seen 70 PTO HP or less run a 15 foot batwing well cutting roadsides. Also have stalled out 130 HP cutting Reed's Canary grass with a 10 foot machine. Manufacturer's guidelines are just that. A mix of fact and propaganda.



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Sid

06-20-2004 01:58:50
12.160.110.146



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 Re: Tractor hp related to size of bushhog. in reply to Hedge, 06-19-2004 21:59:37  
I do not want to sound arguementive but if my memory serves me right my book on my ten foot bush hog says fifty HP for my ten foot pull type and seventy or seventyfive (not sure which) for a mounted. Since my book is not handy I just checked Bush Hogs web site (as was recomended in a response to your question) to see if I am wrong. It say for a model 3210, ten and one half foot cutting width, sixty HP lift type and fifty HP for a pull type. I do not know who is right but I do know that I use a ten foot Bush Hog brand with a fifty five HP tractor. I wonder where some get their info as I have read on this and other boards that it takes a sixty HP to pull a sixe foot rotery cutter and remarks such as "ten HP per foot of cut." Do the other brands of rotary cutters pull that much harder than a Brush Hog brand. Inquiring minds want to know.

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Van in AR

06-20-2004 10:58:24
216.134.231.237



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 Re: Re: Tractor hp related to size of bushhog. in reply to Sid, 06-20-2004 01:58:50  
The reason it says 70-75 HP for a mounted one is because of the wieght of the bush hog will be on the tractor and it needs a bigger tractor to be able to lift it with stability, has nothing to do with the HP needed to turn it.
Van



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Ron

06-20-2004 05:32:58
69.179.17.243



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 Re: Re: Tractor hp related to size of bushhog. in reply to Sid, 06-20-2004 01:58:50  
From the manufacturer.

Example: I have a Rhino TW84. This is their heavy duty 7' lift-type rotary cutter. Servis-Rhino requires that you use a minimum class II tractor with a minimum of 60 pto hp.

Obviously Rhino's are much more heavy duty than Bush Hog's and require more power. Each manufacturer knows his product best.



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FH

06-20-2004 06:31:06
68.135.137.155



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 Re: Re: Re: Tractor hp related to size of bushhog. in reply to Ron, 06-20-2004 05:32:58  
Obviously, you know nothing about BUSH HOG brands and apparently, little about bush hogs in general. There are no "requirements" only recommendations from manufacturer. Did a Rhino rep come out and check to see if your tractor was big enough? IF it takes MORE HP to turn a Rhino than the same size BUSH HOG then the Rhino must have a lot of excess friction in the drivetrain/gears OR it takes more HP to run a Rhino to make it cut as efficiently as a Bush Hog. I run a BH 307, 7 foot Heavy Duty, pull type with a 52 HP. It will EAT anything I can drag it across. A local dealer sells both, the first words out are,"The Rhino sells cheaper than the Bush Hog". The Rhino looks strong, but I'll take a Bush Hog.

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Ron

06-20-2004 08:15:20
69.179.17.243



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 Re: Re: Re: Re: Tractor hp related to size of bush in reply to FH, 06-20-2004 06:31:06  
Obviously I know more than you do... and I can read. The word is "REQUIREMENT". It's on their website and in the Operator's Manual.



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FH

06-20-2004 09:59:20
68.135.139.76



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 Re: Re: Re: Re: Re: Tractor hp related to size of in reply to Ron, 06-20-2004 08:15:20  
Soooooo, did you answer my question? "Did a Rhino rep come out and 'approve' your tractor size? If NOT, then it's NOT a requirement, now is it??? I could care less what a 'website' says. I've been hoggin' for far longer than any web site has been around and evidently than you've been on a tractor with a bush hog.



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Ron

06-20-2004 18:23:05
69.179.17.243



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 Re: Re: Re: Re: Re: Re: Tractor hp related to size in reply to FH, 06-20-2004 09:59:20  
OK, so you think you are smarter than every manufacturer just because you are old. It's guys like you who burn up PTO clutches and break PTO shafts by using the wrong equipment and then blame everyone else. Kinda like a 6 year old. Grow up, old man!



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varmint

06-20-2004 22:34:02
216.52.32.134



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 Re: Re: Re: Re: Re: Re: Re: Tractor hp related to in reply to Ron, 06-20-2004 18:23:05  
Ya got a reel smart mouth on ya someday someone gonna make ya eat them words. Yore deal is if some one shades ya bcause they happen to have more experence than you you then you weasel out of it by callen them old, right?



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FH

06-20-2004 18:40:24
68.135.130.226



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 Re: Re: Re: Re: Re: Re: Re: Tractor hp related to in reply to Ron, 06-20-2004 18:23:05  
Nope, never said I was smarter than anyone nor that I was old, just experienced. Just because you 'read' something on a website doesn't mean that it's the absolute truth in all cases. Liability and lawyers have a way of watering down equipment capabilities. But, of course, with your vast experience you knew that already....or maybe not. I've NEVER burnt up a PTO clutch nor broke a PTO shaft while hoggin', either. Good day, little man.

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well -

06-20-2004 06:34:40
208.61.210.176



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 Re: Re: Re: Re: Tractor hp related to size of bush in reply to FH, 06-20-2004 06:31:06  
without starting a "war" - woods, rhino, then the bushhog brand. bushhog rates right in there with all the other "cheap" mowers!!!!



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Ron

06-20-2004 08:45:16
69.179.17.243



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 Re: Re: Re: Re: Re: Tractor hp related to size of in reply to well -, 06-20-2004 06:34:40  
No war. You have an opinion, and that's great. I'll share my experience with you.

Up here, only Bush Hog and Rhino are sold. People who can't afford a Rhino, or who only cut grass, usually buy a Bush Hog. For those of us who can afford a Rhino, and those of us who need to clear trees, we buy Rhino. They are much more stout, have far fewer problems, and essentially last forever if the maintenance schedule is followed.

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Jon

06-20-2004 06:59:40
66.209.40.194



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 Re: Re: Re: Re: Re: Tractor hp related to size of in reply to well -, 06-20-2004 06:34:40  
YEE-HAA...let the feud begin! Lets get the Ford-Chevy and the John Deere-Farmall boys in the mix too for added fun! Woods, Rhino,or Bush Hog...as far as I'm concerned if it has more than one moving part it will break and you will be cursing it at some point. I like crow bars and steel wedges, because with only one moving part, they have given me few problems over the years.



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Ron

06-20-2004 01:17:11
69.179.17.243



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 Re: Tractor hp related to size of bushhog. in reply to Hedge, 06-19-2004 21:59:37  
More or less no.

Brush Hog or any other mnaufacturer will tell you the minimum class and hp required to operate the mower. It's on their website.



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Ol Chief

06-20-2004 10:19:26
63.246.191.247



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 Re: Re: Tractor hp related to size of bushhog. in reply to Ron, 06-20-2004 01:17:11  
I believe just about all manufacturers produce good serviceable stuff.I have to give credit to my 80 inch twin spindle Woods new in 1964.It seems to me that it does a lot better than the single spindle 60 inch mower that I also have.I pull both with with a Minneapolis Moline 335 of the same vintage and the Woods 80 inch will go thru heavy weeds and grass as high as the tires even with a sprinkling of small saplings in 3rd gear. I believe you need to consider torque as well as HP because I have tried newer tractors of the same HP (35 horse ) with out success.In short the old machines had lower speed long stroke engines which really lug when the going is tough.Also think the twin spindle is easier to pull with lower hp requirements.I am not knocking anyone elses opinion or equipment,Just telling of my experience.I had Case DC which all neighbors borrowed to use on silo blowers because of the torque produced by that old long stroke engine.It just never choked down when the blower was over fed.

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txblu

06-21-2004 05:50:29
199.46.199.230



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 Re: Re: Re: Tractor hp related to size of bushhog. in reply to Ol Chief, 06-20-2004 10:19:26  
That's one of my rubs. Tractor data publishes hp all over the place but don't look into the equation.

HP = torque x rpm's. Newer tractors run higher rpms so torque is obviously less. With the low rpm's comes the long stroke you mentioned and therein is the torque you mentioned to pull you out of the tough spots.

That's why I'll take old iron over the newbies any day.

Mark



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Jumptrap

06-21-2004 12:05:49
172.136.213.112



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 Re: Re: Re: Re: Tractor hp related to size of bush in reply to txblu, 06-21-2004 05:50:29  
HAR!

I don't think it makes a tinker's damn what BRAND machine you have, just how wide it cuts and what you driving it with (duh!).

I have an ancient New Holland 5 ft. bushhog I run with a 1980 JD 1050...about 33 PTO HP. It will cut 3 foot high fescue in 5th gear if the grass is dry, drop down to 4th if it's wet. My tractor is what most folks call a 'toy' tractor, one them damned lightweight Jap models. He-he. Works fine for me but has its limitations...just like any other machine. No need to try to use an implement too damned big for your tractor. You wouldn' try to pull a 50' flatbed with your pickup would you?

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txblu

06-21-2004 12:23:18
199.46.199.232



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 Re: Re: Re: Re: Re: Tractor hp related to size of in reply to Jumptrap, 06-21-2004 12:05:49  
You mention that, I had this 18 hp diesel that I used for lawn mowing (Allis Chalmers...Japanese).

Tried to put a blade scraper behind it one day to fill in a ditch, with the tractor to the side of the ditch, not straddle it...Just what you said....too light. Had to get out the old iron.

Mark



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