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Implement Alley Discussion Forum

dumb disc-harrow question...

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Matt Page

08-23-2007 10:28:47




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But I'm gonna ask it anyway... although its a little embarrassing. I'm a small timer and haven't seen much new farming equipment, and I always thought these disks I saw with the size of the disks tapering down in diameter toward the outside were wore out. Because I saw others that had the same size discs all the way down, and mine are all the same... BUT the other day at the tractor parts store I was flipping through the brochures and noticed pictures of NEW disks that tapered. The outside disks were very small. First thought I had was of all the auctions I'd not bid on a disk I liked because of all the "wear" and I didn't want to buy a project! Can somebody line me out here, I couldn't ask people who knew me.... Thanks in advance, Matt.

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Leroy

08-24-2007 05:43:21




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 Re: dumb disc-harrow question... in reply to Matt Page, 08-23-2007 10:28:47  
That furrow filler disc was only put on the outside ends of the rear gangs of the disc. all the regular blades are the same size. Say a disc had 10 regular size blades on each gang, 40 blades total, if you wanted that furrow filler blade it was a clamp on uinit that fastened to the large washer on the outside of the outside blade on the rear gang and gave you an 11th blade on that rear gang and they liked to get cought in fence rows or on trees or anything else you were trying to work around and would bust or bend the disc and that is one reason you do not see many of them. And they were mainly used an rigid gabg disc that you could not adjust the gang angle on to fill in that grove left by the last blade because if it was adjustable you set it so there was less angle for finnishing and then you did not have that grove problem and then the disc took less power to pull. That shovel attachment mentioned was mounted just behind the front gangs in the center to tear out that 2" wide strip left between the front gangs and I could see it working on a wheel carried or mounted if there was no trash to catch on it. But what I cant see them working on is the drag disc that does not lift off the ground but they are listed in operators manuals for those type of disc, it must hace had a release to raise for transport. Now and I have only seen pictures, never an actual unit, was a disc with the rear blades all tapering in from small on the outside to large on the inside and it was not for field finnishing but for making ridges down the field for to plant, think it was trees, on top of the ridges so any rain would not set against the tree trunk but would run to the low spot between the rows.

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flying belgian

08-23-2007 15:41:02




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 Re: dumb disc-harrow question... in reply to Matt Page, 08-23-2007 10:28:47  
That is not a dumb ? and you need not be embarrassed. I happened to know the answer to it but many times I have seen simple questions answered on here that I didn't have a clue. No one man can know everything.



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johns48jdb

08-23-2007 11:38:53




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 Re: dumb disc-harrow question... in reply to Matt Page, 08-23-2007 10:28:47  
if you've looked as some disk that couldn't be lifted in any way but just drug around in the field some of the blades may have looked smaller because of wear when turning. very few disk come with the smaller blade on the end but all should. the little blade doesn't leave much of a furrow in the field, especailly nice if you come back after a rain and cut cross ways to what you did the first time. i never cut cross ways anyway but go more at an angle to what i did before.

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55 50

08-23-2007 15:22:16




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 Re: dumb disc-harrow question... in reply to johns48jdb, 08-23-2007 11:38:53  
Interesting topic. (and not a dumb question at all) I have a John Deeere RWA and the Parts Catalog lists a "furrow filler" attachment and a "furrow leveling blade" attachment, both with the same description of what they are to do, namely "fill and level the furrow left by the outer rear gang disk blades when disking in plowed or loose ground". The Operator"s Manual says (for the furrow leveling blades) if main blades are 16 inch, filler blades are to be 12 inch, main 18, filler 14, main 20, filler 16. I suspect that not many users were very concerned about leveling those little furrows. Don"t remember ever seeing a disk that had leveler blades. The furrow filler looks more like a cultivator shovel. It just hangs on a hinged bracket and doesn"t roll.

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johns48jdb

08-23-2007 16:29:24




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 Re: dumb disc-harrow question... in reply to 55 50, 08-23-2007 15:22:16  
ok while we're into this the sweep was used to go in between the rear gangs and broke out the hard ridge left that the two inside front blades of each gang left when they made their path. i don't think it would be hinged, but would raise and lower with the disk. there wouldn't be one on a disk that didn't pick up in some way. i've forgotten the number on the ih disk that was in use 20 years ago, but it came with that cultivator shovel on it. i think it was a 990.

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55 50

08-24-2007 10:02:18




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 Re: dumb disc-harrow question... in reply to johns48jdb, 08-23-2007 16:29:24  
The "furrow leveling blade" I mentioned before is not the cultivator sweep (called a "middle breaker" which is definitely not hinged) that goes between the front gangs to cut the small center ridge. This leveling blade is shown in the Operator's Manual (page 6) as fastening onto the outer end of the rear gang frames and pointing down for working and turned 180 degrees up for transport position. The Manual says, in part: "The furrow leveling blade can be raised up over the gang frame for transporting, passing through gates or disking close to fences."

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55 50

08-24-2007 10:05:57




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 Re: dumb disc-harrow question... in reply to 55 50, 08-24-2007 10:02:18  
One more thing I wanted to add but hit the send button too soon.

The "furrow leveling blade" is not a circular blade that rotates with the disk gang but just hangs down and looks like a small spade.



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johns48jdb

08-24-2007 12:07:47




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 Re: dumb disc-harrow question... in reply to 55 50, 08-24-2007 10:05:57  
never heard or saw one of those furrow leveling blades. the cultivator plow point goes behind the front gangs doesn't it. it would be to hard on it to try to plow before the disk. at least that the way disk i've seen with them were set up.



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glennster

08-23-2007 10:57:47




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 Re: dumb disc-harrow question... in reply to Matt Page, 08-23-2007 10:28:47  
the small blade on the very end of the gang is a "closing" blade. it throws the dirt into the furrow on the very end of the disk.



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