what size harrows

[Fabro]

Hi TBN er's
I'm a new member with a B7500 kubota with R4's and was wondering if it would have the ability to pull a set of 6 ft John deere harrows? I have a chance to get them for free. they need some work {he said } and haven't seen them yet but will probably get them anyway.
Just wondering if anyone has about the same size tractor with experience with this size harrows.
Going to look at them Saturday.
Thanks in advance. Love this site.

 

[JoeR]

When I had my B2710, I had no problem pulling a 5 foot disc except when I hit soft sand... Then I would have to lift the three point. Of course, your soil may prevent you from pulling a 6 foot disc with the 7500. I was told that the 5 foot disc was the proper size for the B2710.

Joe

 

[rambler]

How big (hp) is your tractor? We don't know all models specs. /forums/images/graemlins/wink.gif

Different regions of the USA have different ways of naming implements. For me here in the northern midwest, asking about a harrow would be a drag, or spike tooth harrow, or a spring tooth harrow. A very light implement that floats over the ground with little teeth to lightly work the soil. They come in 4-5 foot wide section usually, and any tractor can pull one, probably 2 sections.

I notice in other parts of the country, they call a disk a 'disc-harrow' and some folks shorten that to 'harrow' in their region. This thing has dish-shaped blades on it to cut the ground.

Now, there are _many_ different types of disks. If fresh spring ground with a heavy offset disk with 24" blades, can take 180 hp to pull a 10-12 foot model.

Then again in fall on nice ground in cornstalks, my 36 hp tractor would just toy with a pull-type 12' finishing disk with 17" blades on it.

A little 3pt modern disk would take even less hp per foot, as they are built so light & flimsy.

So to avoid some really wildly different replies, best tell us exactly what it is you are looking at. /forums/images/graemlins/smile.gif

--->Paul

 

[Fabro]

Your absolutely right Rambler I have not seen these harrows but do know they are old and light. 6ft!
My tractor is a 21 hp kubota B7500 that weighs 1367 lbs + 302 loader maybe 500 lbs + loaded tires,2-300 lbs. So I'm guessing around 21-2200 lbs. I would think they would weigh several hundred lbs. From th way he described them they are built in the 1940's or 50's. So probably have smooth round 12" disc's. don't know the model, tried to find pics on the net of various old 6ft'ers. nothing.

 

[Fabro]

Well I saw the harrows today and they are what I expected. 6ft. wide, 12" round disk, drawbar type { that means hooks to my a unmoveable drawbar attached to tractor bottom } 3 broken disks, but now the guy saya he might not give them away because some parts might fit his other set he uses.
I'm a little disapointed in wondering if he'll part with them.
He said if he can get parts for his set he will. they probably weigh about 5-6 hundred pounds. so what do you think, should it pull them

 

[greg_g]

</font><font color="blue" class="small">( should it pull them )</font>?

Depending upon your soil composition, 21hp is possibly underpowered, which computes to no more than 15 drawbar horsepower with R1s. I believe the R4s reduce that figure even further. Then consider an engaged six footer has a disproporitionately large turn radius. Add all that to the fact that you can't even lift the rig if/when you get stuck, and my recommendation becomes "keep looking".

Alternatively - and since Kubota specs the 12hp B7500s at only 38.9" wide - you can buy a brand new 48" three point disc harrow for under $450.

//greg//

 

[Slamfire]

You can always remove discs to make the thing narrower. /forums/images/graemlins/wink.gif

 

[VT_Kioti]

Randy
That B7500 is a great tractor for it’s size. I owned one once and it did everything I asked of it. However, from your location in New Haven you must be dealing with Addison County clay. If that’s the case the B7500 will be under powered for the 6’ disks. You possibly could remove disks and narrow it up some but it will still be a real pull for your tractor. I would think you would be best off if you need a disk harrow, to look at some of the 3pt harrows that are available for your size tractor. By adjusting the angle of the disk’s axle you should be able to make it work real well. I have read that they are pretty light but with the axle adjusted all the way back and possibly some blocks for weight they will work the tractor if the soil is right.

Al