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8N-how much down pressure on arms for disk?

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rammell

10-08-2004 23:19:25




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Greenie here, have a 8n. Looking at 6.5 ft disk that is 3 pt. Worried that little disk won't have weight enuf to till soil. So, wondering how much "down pressure" the 3 pt. arms will exert to help weigh down the disk? (I know, PTO needs to be running to run arms, unless you have Zane Thing) Thanks for your help. Mark




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valhallareject

10-10-2004 01:50:12




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 Re: 8N-how much down pressure on arms for disk? in reply to rammell, 10-08-2004 23:19:25  
I would add a couple of things.....first, the lift will "lift" more weight then the light weight front end can safely hold down. When you get that disk all loaded down and cutting to satisfaction be extremely careful when using the turning brakes with the load up. You may find the normal "quarter size" turning radius has become a "dime"! Secondly, unless you are dealing with an "old field" site you will get the best results from a lightly loaded disk pulled over the top of a "plowed" field. I plow my fields with a double disk Alamo plow (but only because the N is a bit under-powered for a chisel)followed several weeks later (depending on rainfall) by a single pass with a dual tandem 16" disk harrow. This is followed up by a final disking immediately before drilling in the seed. Any more passes then this with a disk harrow is actually counterproductive resulting in increasing soil compaction. Good luck with your planting!

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Bryan in WI

10-09-2004 06:36:59




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 Re: 8N-how much down pressure on arms for disk? in reply to rammell, 10-08-2004 23:19:25  
As others have said, none. I have a 5" IH disc, and I add weight to it. I happen to have one of those lawn rollers that you can fill with water, and it sets on the disc just perfect. Put it on there empty and nice and light, then fill it up with about 250 lbs of water and that does the trick. I would think that a 6" disc would be a nice size.
Bryan



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ZANE

10-09-2004 05:11:06




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 Re: 8N-how much down pressure on arms for disk? in reply to rammell, 10-08-2004 23:19:25  
No down pressure is not a bad thing. Harry Ferguson had it figured right to not give down pressure to his lift.

When I worked at a local IH dealership there were several IH tractors that had down pressure. Down pressure means that when you try to push down on the implement it raises the back wheel/s and you immediately loose traction. Loose traction and you loose forward motion. The wheels spin. You curse! Down pressure not good!

Maybe good for a post hole digger if your bits are worn out.

Zane

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Fast Ed Ohio

10-09-2004 00:11:15




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 Re: 8N-how much down pressure on arms for disk? in reply to rammell, 10-08-2004 23:19:25  
Rammell, 8ns have no down pressure , only gravity , I use a set of 6.5 discs with my 8n they are just the right size and weight for the tractor, For breaking up new ground most folks plow first let it dry a bit and then disc it up, it may take several passes, some add extra weight to the discs ( cement blocks ect.) I dont .



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Dell (WA)

10-08-2004 23:29:09




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 Re: 8N-how much down pressure on arms for disk? in reply to rammell, 10-08-2004 23:19:25  
Rammell..... ...unfortunately, The N's 3-point is power UP and gravity DOWN. (meaning NO down pressure) Disc penetration is based on WEIGHT and offset angle, moisture condition of soil; and number of passes. Most 3-point discs are lightweight and need additional ballast. Your good N-Hydraulics can lift about 750 pounds. You should be able to figger out additional weight sources; RR tyes; old engine blocks; concrete building blocks; emptied beer kegs fulla water; you gitt the idea? ..... ....Dell

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