Have a 5 ft Bushhog Squealer now. Did have a 42" on a sub-compact New Holland. Both have had a stump jumper. To be frank I have never seen one without a stump jumper. My experience is limited to Bushhog, Modern and Howes.
Rotary Cutter Is a stump jumper needed for a 4-foot brush hog?
- Thread starter Santa Craig Cringle
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jyoutz
Super Member
When I had a small 25hp tractor, I bought a 4’ Landpride cutter and it had a stump jumper. That size is what you want for a 25hp machine.
jyoutz
Super Member
Yes, but that’s pto hp, not engine hp.Isn't the some sort of ratio recommended for horse power to diameter of brush hog, .. Something like 1 foot of cutter for every 5 HP of tractor.....
Rotary Cutter - Bush hog hp requirements
Is there a general rule for how much pto hp is needed for various sizes of bush hog type rotary mowers? I will be needing to cut tall (2-3ft) grass hay, lots of blackberry bushes , small diameter saplings. Am I going to need at least 25hp, or will 18 to 20 work? Any advice is appreciated.www.tractorbynet.com
Williy
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And remember to get the light BH not the heavy duty one
and make sure you grease it real good before using
willy
and make sure you grease it real good before using
willy
ning
Elite Member
I don't think the stumpjumper affects the cutting at all; the cutting is only happening at the end of the blade, which is tracing the same path with or without a jumper.
My guess is that the jumper keeps you from somehow getting a... stump... from getting in too close to the spindle where it would either hit the spindle directly or cause the most damage by suddenly stopping the spinning blades. Most of the time you're going to hear the stump getting hit by the blades, but I guess it's possible that the blade could miss the stump and then as the tractor moves forward the deck changes orientation of the tractor wheels drop into a hole and suddenly the stump that got passed by is (relatively speaking) sticking up higher; the jumper gives it a chance to glide over at the most vulnerable part.
My guess is that the jumper keeps you from somehow getting a... stump... from getting in too close to the spindle where it would either hit the spindle directly or cause the most damage by suddenly stopping the spinning blades. Most of the time you're going to hear the stump getting hit by the blades, but I guess it's possible that the blade could miss the stump and then as the tractor moves forward the deck changes orientation of the tractor wheels drop into a hole and suddenly the stump that got passed by is (relatively speaking) sticking up higher; the jumper gives it a chance to glide over at the most vulnerable part.
mllud
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Cut off the bottom of an old 100# propane cylinder could work. Maybe cut the top and bottom welded together if needed. Cut off flanges.
Take extreme care cutting old propane bottles.
I didn't read this whole thread yet.
Take extreme care cutting old propane bottles.
I didn't read this whole thread yet.
EddieWalker
Epic Contributor
There are a lot of things out there with names that imply they do a certain thing, but they don't.
A stump jumper does not jump a stump, it does not prevent the blades from hitting a stump. It's just a clever name for a piece of metal that the blades are connected to.
A stump jumper does not jump a stump, it does not prevent the blades from hitting a stump. It's just a clever name for a piece of metal that the blades are connected to.
ning
Elite Member
Given that the blades are attached below it, clearly the blades will hit anything first, so you're definitely right
... though if the mower isn't spinning I could see it giving a hint more protection. Not sure why you'd be moving the mower with a protruding stump under the mower with the mower down without the blades running though, so
was it just clever marketing and everyone adds them now?
It's got to be easier to build a balanced blade carrier which isn't big and round.
airbiscuit
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To me,a 4 footer best suits the size of the tractor, not just in terms of power, but also maneuverability, and intuitive use. I have to say that a stump cutter has saved my bacon more than a few times when I ran over stumps that supposedly knew they were there. By the time I hit the clutch, the cutter had "jumped" over the stump.
BTW, here is my former 15hp Shibaura with a 4' rough cut mower. I would drive right through 8' brush to make trails.
BTW, here is my former 15hp Shibaura with a 4' rough cut mower. I would drive right through 8' brush to make trails.
crazyjake8493
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I have a Kioti CS2220 and recently bought the 4ft Countyline brush hog from Tractor Supply, which has a stump jumper. $1200 during the Memorial Day weekend sale, back up to $1500 now. Used 4ft are going for $900-1000 here in fair shape at best, so when that one dropped to $1200 I couldn't pass it up. Perfect size for a 20-25hp tractor.
As others have said a "stump jumper" won't stop the blades from hitting a stump, but it should help save you from breaking shear bolts so often.
As others have said a "stump jumper" won't stop the blades from hitting a stump, but it should help save you from breaking shear bolts so often.
