halltrash85
New member
what size engine does a 5ft 3pt brush hog need to be self powered,will a 6hp with a 6to1 gear reducer do it
converting a brush hog
- Thread starter halltrash85
- Start date
- Views: 15013
Stimw
Elite Member
I would say no way on the 6hp.
I have a 5'er and used to use it with a Ford 8N which is 24 or 29hp. I used to raise cutter up, back over palmettas and lower it slowly and it would eat them pretty good.
I have a 5'er and used to use it with a Ford 8N which is 24 or 29hp. I used to raise cutter up, back over palmettas and lower it slowly and it would eat them pretty good.
leonz
Super Member
The brush mower would not mow very well if at all
if it even managed to rotate as the needed torque
is not there.
You would need a 4 cylinder wisconsin off of a
Hesston or New Idea windrower/haybine.
The issue then becomes whether you can move
the mower without wheels because of the added weight.
Soundguy
Old Timer
- Joined
- Mar 11, 2002
- Messages
- 52,424
- Location
- Central florida
- Tractor
- RK 55HC,ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC
ditto on the wisonson engine.
otherwise.. figure about 5hp per foot as a rough estimate...
6hp wouldn't even power a 5' finish mower..
otherwise.. figure about 5hp per foot as a rough estimate...
6hp wouldn't even power a 5' finish mower..
RoyJackson
Rest in Peace
- Joined
- Nov 17, 2001
- Messages
- 24,646
- Location
- Bethel, Vermont
- Tractor
- John Deere 4052R Cab,, Deere 855D UTV, Z920A Zero Turn Mower and assorted implements
I wouldn't go less then a 20 HP engine...even then, I don't think the torque would be adequate.
Soundguy
Old Timer
- Joined
- Mar 11, 2002
- Messages
- 52,424
- Location
- Central florida
- Tractor
- RK 55HC,ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC
not on a 20hp whizzbang lawnmower engine anyway.
if it ws a REAL 20hp engine.. like out of a older small-ish tractor.. I'd probably trust it..
say something out of a farmall C etc..
if it ws a REAL 20hp engine.. like out of a older small-ish tractor.. I'd probably trust it..
say something out of a farmall C etc..Rock knocker
Veteran Member
DR uses a 15 and 20hp engines on their self powered 44" pull-behind brush mowers. You could try your 6 hp:thumbsup: I wonder if it would even turn the rotational inertia of tthe cutter?
DR® Power Equipment - ATV Mower | 20 HP Pull Behind Mower| DR Power Equipment
DR® Power Equipment - ATV Mower | 20 HP Pull Behind Mower| DR Power Equipment
Shield Arc
Super Member
After getting rid of those dam horses I needed something light to mow the pasture because it is too wet until about the end of July before I could get my tractor and brush hog in there to mow one area, so I bought one of those to mow the pasture. Worked great, it would mow 12-inch + grass easy, but the grandsons complained it didn't mow low enough to play baseball
. Sold it and bought a commercial Toro zero turn.
Soundguy
Old Timer
- Joined
- Mar 11, 2002
- Messages
- 52,424
- Location
- Central florida
- Tractor
- RK 55HC,ym1700, NH7610S, Ford 8N, 2N, NAA, 660, 850 x2, 541, 950, 941D, 951, 2000, 3000, 4000, 4600, 5000, 740, IH 'C' 'H', CUB, John Deere 'B', allis 'G', case VAC
i had a craftsman trail mower.. sold it.. couldn't keep up with pasture grass that a real hog could.... no room for 2nd best in mowing gear at my place..
LD1
Epic Contributor
6hp.....no way.
20-25hp is what you need. I think that it would have adequate torque, cause keep in mind that a 6:1 reducer would be used to get down to the ~540rpm input. So torque goes up. HP is HP. Torque can be overcome with gearing. But gear changes dont make hp go up. HP remains constant (less any losses from friction).
Also arent going to want to make it a direct drive. You will need a centrifugal clutch or I doubt you would ever start it.
20-25hp is what you need. I think that it would have adequate torque, cause keep in mind that a 6:1 reducer would be used to get down to the ~540rpm input. So torque goes up. HP is HP. Torque can be overcome with gearing. But gear changes dont make hp go up. HP remains constant (less any losses from friction).
Also arent going to want to make it a direct drive. You will need a centrifugal clutch or I doubt you would ever start it.
plumbstraight
Silver Member
- Joined
- Dec 16, 2010
- Messages
- 236
- Location
- Washington state and Ak
- Tractor
- 5300 John deere,53 harry ferguson, ck20 kioti, 135 ferguson, 350jd dozer, k40 kubota excavator
NO
NO! A 5ft needs around 25hp to be efficient in mowing. And in heavy grass which is tougher to mow than brush that is a slow go. 6hp is just not enough.
Your 8N will pull it but not in heavy cutting. Be SURE to put an overrunning clutch on your pto. this will save you from running your tractor into an imovable object when you need to stop. the inertia of the spinning blades will push the tractor as it is geared directly to the transmission.
NO! A 5ft needs around 25hp to be efficient in mowing. And in heavy grass which is tougher to mow than brush that is a slow go. 6hp is just not enough.
Your 8N will pull it but not in heavy cutting. Be SURE to put an overrunning clutch on your pto. this will save you from running your tractor into an imovable object when you need to stop. the inertia of the spinning blades will push the tractor as it is geared directly to the transmission.
snowjoker
Bronze Member
Question is why would you want to bother with such a task.. Your talking alot of work to convert and engine to power an impliment that your tractor can do just as well.. I say at least a 30 hp engine but then you just added #500 to the weight of the contrapton your building, , and making a hitch then convert it to pull behind... oye... be cheaper to buy another tractor with more HP than an 8n then to convert that to an engine driven death trap..
