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Implement Alley Discussion Forum

single disc vs. double disc drills?

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Canadian Ken

02-18-2006 05:46:00




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I should have asked this question first. We bought our JD 8350 used 20 years ago, it has double disc openers. It has always worked great. We previously has a JD FBB drill with single disc openers. The singles always worked great to cover the seed. The 8350 we have was too good of a deal to pass up, except it has never covered the seed correctly on the tractor tracks.We always pull a diamond harrow behind the drill to make sure all the seed is covered. Maybe we don"t use enough down pressure , but I don"t want the seed too deep. Can anyone tell me the advantages that the dealer would use to sell one over the other? What is everyones preference? Thanks
Ken, Tavistock, Ontario

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TomTX

02-18-2006 12:32:10




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 Re: single disc vs. double disc drills? in reply to Canadian Ken, 02-18-2006 05:46:00  
Ken, I would slightly perfer the single disk, though I currently have only a JD double disk. According to Mother Deere in the manual the double disk is made for well prepared ground to plant at higher speeds than the single disk. The manual also tells you how to adjust the rows that fall on the rear tractor tire tracks, useing one notch more down pressure. You could also add a couple of chain rings of length to just those rows to cover better.
Tom

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Bill in Colo

02-18-2006 09:03:47




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 Re: single disc vs. double disc drills? in reply to Canadian Ken, 02-18-2006 05:46:00  
If you were not 1800 miles away,I have one out in the iron pile,that you could have Built it out of 4" pipe and old spring tooth teeth used it behind 2470 case and in front of 2 IH 100's with double disk openers. Took about one day to build used it about 6 years.



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David from Kansas

02-18-2006 06:32:24




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 Re: single disc vs. double disc drills? in reply to Canadian Ken, 02-18-2006 05:46:00  
Ken,
You are right about a double disk not covering well in tractor tracks. I have same problem with my 8300. I use extra down pressure on the disks in the tracks, and it still doesn't cover well. I think the only advantage of the double disk over the single disk is that you can travel at a faster speed and not worry about covering seed too deep. Otherwise, I think I would prefer single disk drill. There are a lot of those track scratchers around here that mount on the 3 point but I have never used one. Seen a few sell at farm auctions and they don't seem to bring much. Just my opinion.

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Ks-farmer

02-18-2006 11:12:55




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 Re: single disc vs. double disc drills? in reply to David from Kansas, 02-18-2006 06:32:24  
I have a Great Plains dd 8" drill that works great. I have a IH 510 8" sd that doesn't work worth a darn. The down pressure rods bend easy or break and it doesn't cover the tracks at all. I do like the 510 for metering though you set the lever rigth where the chart says and that's what it puts on, almost more accurate than an air planter.



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