Draft Control and Disking

[Glowplug]

There have been a few disk harrow threads here lately. A couple are mine. I was just sitting here visualizing running a disk harrow and a thought, actually a question, came to mind. I can see how draft control is useful in pulling a 3ph moldboard plow. But is draft control useful, or recommended, when using a 3ph disk harrow? Or is position control recommended? Of course this question does not apply to the pull-type disk harrows. But the really big, nice agricultural pull-type disks seem to have a different method of controlling the depth of tillage. I was just wondering.

 

[Farmwithjunk]

I grew up around Ferguson and Massey Ferguson tractors. Harry Ferguson invented draft control. Harry pitched his developement as highly usefull with "soil engaging implements". That includes a 3-point disc. From my experience, using draft control with a mounted disc is more of a case of need for TRACTION CONTROL than of depth control. Even in plowed ground, 9 times out of 10, the biggest issue with mounted disc's is getting it DOWN to the desired depth as opposed to keeping it from working too deep. In most cases, position control can be used with great results to "gauge" a disc if operating depth is greater than desired.

I have used draft control with my 3-point disc on a few occasions. Hills and too much rain make for lousy traction conditions. Draft control helps in conditions like that. MOST conditions, from my experience, it doesn't make much difference which method I used. (pos. control vs. draft control) BUT, you have to use one or the other and draft control has it's subtle advantages, so, I USUALLY use the draft control.

Now, before I get everyone all in a dither, I generally use a tractor with more than adaquate HP, plenty of weight/traction, and a disc that is just a bit SMALLER than what the tractor is capable of handling. If you're trying to maximize the implement size you're pulling, draft control is probably more critical. I follow the logic that smaller implements/higher ground speed is more efficient. (To a REASONABLE degree)

Long and short of it, I don't think there is a "carved in stone" answer. Try both and see which works best in your situation. There doesn't seem to be any negatives to using draft control, and it does have occasional benefits. All things being equal, use the draft control.

 

[Glowplug]

Are you saying that draft control can be helpful in this situation to help prevent traction loss? I can see that one could possibly set up their draft control so that just before they lose traction the implement is raised slightly, thus preventing ever getting to a point of losing traction. In such a situation you could keep moving forward while getting the best tillage without any stopping, slowing, or manually adjusting the implement height with position control. I suppose that would definately be an efficient way of doing things.

 

[Farmwithjunk]

Are you saying that draft control can be helpful in this situation to help prevent traction loss? I can see that one could possibly set up their draft control so that just before they lose traction the implement is raised slightly, thus preventing ever getting to a point of losing traction. In such a situation you could keep moving forward while getting the best tillage without any stopping, slowing, or manually adjusting the implement height with position control. I suppose that would definately be an efficient way of doing things.

Draft control, when it's working correctly, transfers weight to the rear wheels of the tractor. That's a basic design advantage of 3-point hitch, assisted by the presence draft control. It takes a very sensitive draft control system to realize added traction in slick conditions.

 

[MtnViewRanch]

Glowplug, does your Kubota have an adjustable draft control?

 

[Glowplug]

Glowplug, does your Kubota have an adjustable draft control?

Yes. I have a draft control lever and a position control lever. I can't wait to actually get an implement that I can use it with.

 

[Farmwithjunk]

Yes. I have a draft control lever and a position control lever. I can't wait to actually get an implement that I can use it with.

Well, it won't be that plow I was telling you about. Went after it. Drove away without it. Sprung frame. China bound I'd say.

 

[Glowplug]

Well, it won't be that plow I was telling you about. Went after it. Drove away without it. Sprung frame. China bound I'd say.

Oh well. C'est la vie.

 

[greg_g]

I have found no use for draft control when using three point disc harrows this rocky western Kentucky hillside. Wheeled disc harrows work better here because of their greater weight.

As already mentioned, I too experience difficulty getting a TPH disc harrow to cut at any depth in the first place. Going too deep has never yet entered the equation here. I do however exercise the hydraulic toplink when disking. I extend it far enough out to where the harrow is floating. That is, 100% of the weight is on the ground - rather than partially supported by the TPH. That way the discs won't lift when my front wheels hit a depression or crest a rise.

//greg//

 

[Kendrick]

ever tried draft with a snow blower? wondering if it would keep a resonable distance...

 

[Soundguy]

Draft control is primarily designed with ground engaging implements in mind. Draft control can unexpectedly raise / lower the 3pt with non ground engaging implements on it as it feels shock loads or tugs on the implement... that's not bvery desireble as you constantly have to reset the proper distance of the 3pt to the ground..e tc.

Taht's why fergy and ford 9n/2n tractors always used depth limit chains when using rotary mower on their draft only 3pt hyds... cuz they were tired of looking back to see that the mower had crept up 4" or was dragging the ground.. etc..

Soundguy

 

[Kendrick]

Update. Draft controal is VERY usefull for snowblowing! Just got done with my driveway and will probably get 12" sunday to practice again on.

with my kioti, the hills here can easly cause some issues with traction. I was floating my snowblower over my drive and parking lot. it has done a wonderfull job. ive scalped the lawn a fiew times but thats nothing new... draft controal was able to keep to the contour of the lawn/parkinglot while i was backdraging with my bucket. The tractor has worked wonderfully for snow removal. I will have to see about getting pictures of it one of these days. I am always blowin in the dark though :/

 

[GreenMtns]

Taht's why fergy and ford 9n/2n tractors always used depth limit chains when using rotary mower on their draft only 3pt hyds... cuz they were tired of looking back to see that the mower had crept up 4" or was dragging the ground.. etc..

Soundguy

I thought all the 2N - 9N and 8N's had the lever that changed from position to draft. Did that start with the 8N's?


Kendrick

Where abouts in Vermont are you? I'm in Poultney near Castleton. We are expecting a good workout for the blower Sunday too.

 

[wolc123]

Position control was first offered on the 1948 8n, prior to that, the 1939-1941 9n and the 1942-1947 2n had only draft control. Position control is a big reason why 8n's sell for considerably more $ than 9n's or 2n's. The moldboard plow is about the only common impliment that is best used with draft control. Most everything else, disks, and especially mowers, are better to use in position control. On an 8n, position control is when the little lever under the seat is up. Easy to remember: Down with a "D" for draft.

 

[Kendrick]

starksboro, looking to get around 18" by monday...

 

[Soundguy]

As WOLC said.. oem position control lever for fords was 8n+

Soundguy

I thought all the 2N - 9N and 8N's had the lever that changed from position to draft. Did that start with the 8N's?


Kendrick

Where abouts in Vermont are you? I'm in Poultney near Castleton. We are expecting a good workout for the blower Sunday too.

 

[diyDave]

Draft control, when set right is a good idea when discing fields that have soft spots or spots with sticky white clay. I grew up on Allis Chalmers D series tractors, and the traction booster set up they have is excellent. They even had it set up to work with semi-mounted, or pull type implements. When it was set right, by the time you got your hand over to the lever, the tractor had already responded, picked up the implement, and dropped it back to the original depth!