How much disc???

John - OH · Nov 8, 2009

I know this has been discussed here before, but for whatever reason I can"t seem to find it. I have a Farmall SM Diesel and have been keeping my eyes open for implements. Just curious as to what size disc it will pull? We have a wide range of soils from sand to heavy clay. I know there are many variables on disc configuration and such. I am just looking for something about the same vintage as my tractor, nothing fancy. Thanks!!

Anonymous-0 · Nov 8, 2009

A good, heavy, properly operating 10' disc will be ALL your SM will want.

Glenn F.

fixerupper · Nov 8, 2009

Most of the general purpose disks of that era were fairly light, so I would think a SM would do fine with a 14 footer in heavy trash like cornstalks. In plowing a 14 foot would stop the tractor if it's sunk clear in, but I don't know why you would want to plow it a second time with the disk anyway. If it's a disk that's designed for heavy deep tillage a ten footer is about all she'll handle. Jim

F-350 · Nov 8, 2009

In heavy soil a 10 ft disc would be enough,especially if its stock.If its juiced up some and has duals it might pull a 12 ft disc.

cadet rooper · Nov 8, 2009

John, I've done alot of discing with the M and SM an 8' JD KBA with fairly new blades angled to the max is a load so a 10 footer is even more of a load with good blades it becomes more of a traction problem the more you angle the disc so duals would help a bunch to reduce slippage and trenching kinda like the more you angle the more the tires trench.

Gene Dotson · Nov 8, 2009

John;
Being from western, Ohio, I feel I can give you some first hand experience with our soils and M sized tractors. If you want to do full tillage on freshly plowed ground, a 9 foot wheel disc will be all you ever want to pull and then you will need duals on the tractor. If you want to use it as primary tillage, like corn or soybean stubble, then you will handle a 10 foot disc. Also, you will probably want to consider pulling a harrow or cultipacker behind for a finishing pass and will be able to do that with a 9 foot disc.
Overloading a tractor with a disc, even though it will pull it in a lower gear, reduces the effectiveness if it.
Our heavy clay soils are so much different from soils of the midwest states and demands about a third more power than working soil in Illinois and Iowa... Gene

kyplowboy · Nov 8, 2009

When I was a kid granddad had a SM gas and an 8' IH disk. There were times like in freshly turned red clay that it was all the old girl wanted.

Dave

John B. · Nov 8, 2009

John,

I have an 11ft JD disk and it's a load for my International 574 tractor. It will pull it but it doesn't want to, I have to watch the temperature gauge closely to make sure it doesn't run hot.

John - OH · Nov 8, 2009

Thanks guys for all the replies. Now I will have to see what I can find.

IHMANKY · Nov 9, 2009

I have a 10 foot IH 350 wheel disk and my gas M will pull it great in chiseled ground in fourth, have had to go to third if the ground was a little damp, but in ground that one would normally work during a typical year, fourth was no problem. Never tried to pull it over moldboard-plowed ground though. Keep in mind the IH 350 is not a heavy disk by any means.

DoubleR · Nov 9, 2009

From my experience the rule I've seen on this board often seems to be fairly accurate. 1.5 horse power per blade.

spacechem · Nov 12, 2009

In another lifetime I spent a lot of days on a JD70G in front of a 14ft. RW disk. Handled it just fine.

How much disc???

John - OH

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