The ultimate bush hog

[Soundguy]

I've seen lots of 10' and 12' cutters that are nothing more than 15' and 18' batwings with a single side wing missing, making them the center section, and a wing section. Depending on the design, that gives you a front distribution gearbox, and two blade driving gear boxes, or a power dividing and blade driving gearbox on the center section that drives the wing sections, except there is only one wing.. etc.

You can find ditch bank mowers.. etc that have offsets. However.. on the ones i've seen, the pto driveline is straight behind the tractor, and the gearbox setups on the mower take care of the geometry for powering the rest of the gear boxes that drive blades.. etc.

Soundguy

 

[RobJ]

I was out tearing up my bush hog again today, and wondered if it is a good idea to consider offsetting the bush hog a foot or so to one side, to cut stuff that you really don't want to drive over? I could build a 7' one, and have it trac even with the wheel on one side, and overhang about a foot on the other side. Probably a little harder on u-joints, but I can stand that (I think).
Anyone ever seen a bush hog with an offset?
Next question... why not?
David from jax

Just put a longer blade on one side. That'll do it!!

 

[sandman2234]

Yea, yea, that's it, I'll just put a longer blade on one side...
Wonder what I will do about the problems that idea creates?
David from jax

 

[Turkeyman]

The folding door is where the back top of the mower is lifted by a hydr ram to expose the blade and allowing the blade to contact a tree without the tree bending. A push bar with two HD shock absorbers push the tree away from the tractor. Sorry I can never post pictures but look at the Brown Web site, Alimo Make one as well and so does Rhino - Lumber Jack model with a push bar. I have seen plenty of Brown's in the real world but never a Alimo or Rhino model.

Google "Woodboss" which has a video of one in action.
Google "Hinton Tractor" and you can see their power line tractors in a NH or Kubota.
Both build professional ROW equipment. Mowers that run 50 hrs a week for 45 weeks a year.

Brown also make 8- 10 ft models of Super Duty mowers too.

 

[sandman2234]

Most bush hogs are rated at FPM for the blade tips, whereas the speed of sound is rated at Feet Per Second, which is 60 times as fast for the same number of Feet per minute. An easy thing to overlook, but approaching the speed of sound with blade tips is possible with the horsepower available on a tractor, especially on larger single spindle mowers. The larger the diameter of the cutting circle, the faster the blade tip goes to make a single revolution of the gearbox shaft.
David from jax

 

[Doug W.]

OK, So if I have this right (about tip speed)
In Asia,Europe and other Metric regions of the world
we would be looking at what, 25.4 times the speed of sound over there?
Lets see.............4,267,200 mm/sec.

Now that's haulin

 

[andrewj]

I'm surprised at all the off topic, tip speed, space shuttle door gunner B.S. I had to wade through! Respectfully guys, can we keep this about the ultimate bushhog and respect the guy's thread? wink and a smile!

 

[sandman2234]

Andrewj,
I don't mind sifting thru a little cow manure, in order to find some good information.
Hopefully you looked at the links to the bush hog building from the PM board. That guy built one nice bush hog.
The last one I build was more of a finish mower, using 3 blades and 8' of deck to handle the grass.
If I ever get slowed down, I am going to build another, if I have any spare metal left, as I am fixing to start a project that is going to use up a lot of my scrap metal laying around.
I hate paying new prices for steel...

David from jax

 

[Dave1801]

Ok, getting tired of tearing up bush hogs. I haven't torn up any gearboxes, but am really hard on sheet metal and uprights.
I purchased the main gearbox (1input/3outputs) and a single right angle gearbox off the shelf of a now defunct business. Both are new, but starting to show a little rust on the unpainted surfaces.
I saw a guy on a machinist forumn build his own bush hog, for pretty much the same reasons as me, tired of tearing up lightweight bush hogs. I am probably a little harder on them, but apparently he must have torn one or two up in his time. Anyway, on with the question...

If you were going to build a super strong bush hog, PTO, what would you use for the components, how would you know how big to make the stump jumper (in diameter), how many blades, 2,3,or 4? How long of blades would be best? Shorter or longer, which has the capability of doing a better job of clearing rough woods and thick briar patches? Which design of pto shaft has the least likelyhood of twisting?
Hot dip galvanize would make the whole thing last a lot longer and is available locally, provided the pricing hasn't gone thru the roof like a lot of other metal suppliers.
Here is the link to the discussion we had a while back.
Welcome to the Manufacturing Forum: Summer, and the grass is growing, but I'm ready (finally) [finished my Bush Hog]

David from jax

I clicked on this link, but I couldn't find anything about a bush hog?


thanks for any help.
Dave

 

[LBrown59]

I clicked on this link, but I couldn't find anything about a bush hog?


thanks for any help.
Dave

2 year old thread.
Guess i have help bringing old post /threads back to life.