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Implement Alley Discussion Forum

discs?

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JeffT

07-27-2004 12:13:10

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I'm new to this so please forgive my ignorance. I've seen two types of discs-one with smooth edges, the other with a "scalloped" edge. When do you use each type?

Thanks

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Dick2

07-27-2004 15:26:26

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Re: discs? in reply to JeffT, 07-27-2004 12:13:10

The notched discs blades were originally invented so the blades could grab stiff cotton stalks and get them under the blade instead of slipping around a solid blade. They also work well in other heavy vegetation. Of course,the notch reduces the surface area and strength of the blade; therefore, the notched blade will wear faster and break easier if it hits a rock.

If you have rocks in the soil, the best bet is use solid blades. If not, you have the flexibility to go either way depending on your needs or wants. Rock blades, that are thicker than standard, are also available but penetration could be a problem in hard soil.

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paul

07-27-2004 13:29:34

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Re: discs? in reply to JeffT, 07-27-2004 12:13:10

Up here in Minnesota the smooth are more common. Notched blades will go deeper, but wear out faster & break easier on rocks.

I would consider a notched disk to be built with a heavier frame, and be more for rough heavy tillage, while a smooth blade disk would be a little lighter, closer disk spacing, and designed to give a better smooth seedbed for finishing disking.

However, if you are looking at the flimsy $150 3pt disks sold at the ag store, then they probably use notched blades on some because the frame is so light a solid blade wouldn't penetrate the ground....

--->Paul

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txblu

07-28-2004 06:15:12

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Re: Re: discs? in reply to paul, 07-27-2004 13:29:34

When I rebladed, I went to 22" scalloped and chose the medium thickness that ASC offered..think it was 7mm, maybe 9. When they arrived, I couldn't believe the difference between them and my OEM discs. Couldn't imagine how husky their thick ones were.

Very happy with them and ASC.

Mark

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txblu

07-27-2004 13:04:24

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Re: discs? in reply to JeffT, 07-27-2004 12:13:10

I'm in heavy clay. Scallops are on the front and smooth on rear. Scallops tear up the sod better as we use disc harrows for plows down here. Gotta have a rolling cutter to keep from getting mud bound and a harrow is much easier to use than other types of rolling cutters. Moldboards are worthless.

Once finished, can either go over with same plow or use smooth - smooth disc to finish out. Then usually use a spike toothed harrow and that's it.

Some use a tyned cultivator with spikes or sweeps with little spring fingers behind for smoothing, depending on previous crop, ground conditions and crop desired. Lot of times they will fall plow and spring sweep prior to planting.

Mark

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TimFL

07-27-2004 12:45:55

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Re: discs? in reply to JeffT, 07-27-2004 12:13:10

We have scalloped edges on the disc that we use for trash cutting, going on a field that has been fallow and is grown up. Smooth blades we use for finish cutting. We have to prepare our fields to "seedbed" conditions before planting. It usually takes 6-8 trips and several months across to get them ready for planting. The scalloped blades seem to penetrate the soil better as we are in sandy soil cutting 8-10 inches deep. As a result the scalloped blades get replaced alot more often as they wear alot faster.
This is the way it is done in our area. I realize in areas with different soil type and practices it will be different.

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