Can My Tractor Pull XXX Tandem Disk Harrow??

[jeff9366]

Can My Tractor Pull XXX Tandem Disk Harrow??​

Tractor factors in descending importance:

1. Tractor weight ((traction))

2: 2-WD or 4-WD tractor power transfer to ground ((traction))

3. Tractor tires in relation to vegetation and soil ((traction))

tire tread​

rear tires inflated with air or filled with liquid​

4. Tractor horsepower



Objectives for Disk Harrow use:

Smoothing a field previously plowed with a moldboard plow or a disc plow.
This is the traditional use for Disk Harrows, since horse and mule motive power.
Penetration less important than smoothing and disk width.
Less draft force resistance than other Disk Harrow applications. (( easier to pull ))
This function is SECONDARY TILLAGE.

Maintenance tillage of previously "broken" ground.
Gardens, fire breaks, fence margins, annually planted game food plots, reducing ruts and hillocks in established fields.
This function is SECONDARY TILLAGE.


Tilling virgin/unbroken/unplowed ground and hooved animal grazed pasture.
This function is PRIMARY TILLAGE.
A Tandem Disk Harrow is not very good at PRIMARY TILLAGE.

A specialized ((one trick pony)) "Offset Disk" is designed for PRIMARY TILLAGE.

(( An Offset Disc is NOT a harrow.))​

Implement Issues:

Total Disk Harrow weight bearing on each pan.

(( Related to pan diameter, pan thickness and pan spacing.))​

Adjustment of gang angles, aggressive for penetration, relatively 'flat' for smoothing.

(( Ease of adjustment varies from Disk Harrow model to model a great deal. ))​

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Pan structure, scalloped for compact category tractor use, smooth/round for utility category tractor use.


Field Conditions:

The first pass over a field with a tractor/ tandem disc harrow combination has the lowest draft force resistance. Disk pans may or may not penetrate but first pass has the lowest draft force resistance.

Successive passes over the softened ground allow the pans to penetrate deeper and tractor tires sink in, increasing draft force resistance during second, third and successive passes.

Dry soil is much harder for pans to penetrate.
If too dry, pans will simply roll over hard soil surface.
Verdure on the field usually wraps around pans and axles, decreasing penetration.
Wet soil may bog tractor/ tandem disc harrow combination.






MORE: Disc Harrow Selection For 18-45 Horsepower Tractors (Revision 2b)

ADJUSTING Three Point Hitch Mounted TANDEM DISC HARROWS

If you are considering the acquisition of a Disc Harrow, first read this LINK covering Disc Harrow selection: LINK: Disc Harrow Selection For 18-45 Horsepower Tractors (Revision 2b) The Three Point Hitch mounted Tandem Disc Harrow is a secondary tillage implement. The Disc Harrow is a...

www.tractorbynet.com

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[ROUSTABOUT]

We pull a 14' disc with a 2wd 5610 Ford. We have a 4x4 but the 4x2 pulls it just fine. Disc sunk down far as it will go, lift wheels are off the ground. 6' Tuffline disc is no strain at all. I think he bought a new 8' disc too, yep he did.

 

[5030]

Pulling resistance is entirely dependent on the angle the disc gangs are set at.

 

[jeff9366]

Pulling resistance is entirely dependent on the angle the disc gangs are set at.

Not how dry the ground is? Clay vs gravelly soil, vs sandy loam immaterial?

Not whether disk pans are scalloped or smooth?

Not whether disk is pulled over the ground a second or third pass?

Not whether pan ground pressure is 30 pounds or 120 pounds?

 

[5030]

NOPE. The 'angle of the dangle' is what determines the tractive effort needed to pull any disc. A non aggressive angle equals a easy pulling disc. The more aggressive the angle, the harder it is to pull. Why they are adjustable for engagements angle in the first place.

 

[MF243RedTop]

NOPE. The 'angle of the dangle' is what determines the tractive effort needed to pull any disc. A non aggressive angle equals a easy pulling disc. The more aggressive the angle, the harder it is to pull. Why they are adjustable for engagements angle in the first place.

I would say weight of disc comes in second and condition of soil third..

 

[hiddentacocatneddih]

You cant change the soil conditions so does it really matter ?

 

[MF243RedTop]

You cant change the soil conditions so does it really matter ?

New ground vrs plowed ground... I would say that's a condition change????
Wet and sloppy soil vrs dry hard packed???
Condition change???

 

[MtnViewRanch]

So no matter what this set weighs and no matter that they sink into the ground well over 12", as long as the angle is set straight pretty much any tractor can pull these?

 

[Egon]

Any disk with them set straight will have a certain pull requirement in a specific soil. As the angle of the disks increases the pull requirement goes up.