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Disk size for a B model

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Matt

03-08-2002 07:30:19

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I've been scouring the countryside (or atleast my neck of woods in Ohio) for a pull style disk for my B. Last year I asked on this board about an appropriate size for my size tractor. The general concensus was about a 4-5' wide disk would be as big as I should get. Well, I found a couple for sale that are probably 6-7' wide, maybe 8'. The seller thought my tractor would do fine pulling this, except I wouldn't want to put much wieght on it. I'd just have to make more passes than I would if it were smaller, fewer disks.

What are your thoughts? Am I asking for trouble with a disk of this size? There sure isn't much out there on the small side. Or the folks just don't want to sell them.

Matt

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mark p

03-08-2002 20:12:32

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Re: Disk size for a B model in reply to Matt, 03-08-2002 07:30:19

you might be able to get the discs from the guy on page 2 of this discussion board entitled ,"tractor value"

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T.J._N.J.

03-08-2002 17:11:33

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Re: Disk size for a B model in reply to Matt, 03-08-2002 07:30:19

Matt most discs are some what modular and if you are able to weld you should not have to much trouble cutting down a set for a smaller tractor and bearings and most other parts are still available. Around here most of the old discs went to the hedgerow or the scrapper when hydraulic lift transport discs came onto the scene. T.J.

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Rod (NH)

03-08-2002 09:30:15

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Re: Disk size for a B model in reply to Matt, 03-08-2002 07:30:19

Hi Matt,

The disc harrows that I have for my B are "AC Model #9 Tractor Disc Harrow". They are the pull behind version and have been with my B since it was brand new in 1942. They are 6 ft wide in four gang, double action configuration. The B has never has any problem with them. We always used to put some heavy rocks in the weight pans for extra weight...no problem.

Rod

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Matt

03-08-2002 12:04:38

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Re: Re: Disk size for a B model in reply to Rod (NH), 03-08-2002 09:30:15

Rod,

Help me picture this better.....when you say 4 gang, do you mean like this?

000-000-000-000
000-000-000-000

Two rows of disk, four across?

Matt

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Rod (NH)

03-08-2002 12:30:15

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Re: Re: Re: Disk size for a B model in reply to Matt, 03-08-2002 12:04:38

Matt,

There is a RH and LH gang of discs in the front and a RH and LH gang of discs in the rear for a total of four gangs of discs.

The front and rear gangs can be angled independently, hence the double action.

Here's a picture out of the manual:

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Matt

03-08-2002 12:37:42

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Re: Re: Re: Re: Disk size for a B model in reply to Rod (NH), 03-08-2002 12:30:15

Thanks for the pic. I've seen this particular style around here, but not for sale. The one's I saw earlier this week had more gangs of disks. I can't remember exactly how many but I know there were more than 2 gangs going across. It might have only been 2 deep, like your picture though.

Do you still think I'd be OK pulling something like that, or should I opt for a 4 gang style like your picture? My only problem is that its starting to seem like "beggars can't be choosers" .

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Rod (NH)

03-08-2002 14:22:26

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Re: Re: Re: Re: Re: Disk size for a B model in reply to Matt, 03-08-2002 12:37:42

I know what you mean. The maximum drag on your tractor is when the front row gangs are angled maximum forward and the rear row gangs are angled maximum rearward during the final stages of harrowing when the discs are riding deep in the soil�as I remember. It�s been over 20 years since I used �em. Adding weight to the weight pans adds to the cutting action and, of course, further increases drag seen by the tractor at any time. I would guess that you should be concerned about the actual number of discs employed. Mine has 5 -16� dia discs in each gang and are spaced 6.5� apart. The overall width is 6 ft. My guess is that adding a foot or even two to the width would not make enough of a difference that could not be compensated for by not adding so much weight and/or not angling as sharply. Plus, if all else fails and you are not a purist for appearance, you could cut off the outer discs. If you had more than two rows, say three, that would potentially increase the drag by 50% over just two. In this case I would look at the actual harrows to determine the feasibility of simply cutting off the last row altogether. You definitely need to have SOME angle of the gangs�otherwise you will not get anything done!

Hope this is food for thought :o)

Rod

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steve

03-08-2002 20:45:10

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Re: Re: Re: Re: Re: Re: Disk size for a B model in reply to Rod (NH), 03-08-2002 14:22:26

I pulled a 8 foot, 4 gang like the picture above with our "C". It worked o.k. as mentioned you can angle the gangs to get more "dig". we never had to add weight to the 8 ft. I basically bought the 8 foot because it was $20. Get what ever you can, you can always do a little modification to make it work right.

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Matt

03-09-2002 13:42:12

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Re: Re: Re: Re: Re: Re: Re: Disk size for a B model in reply to steve, 03-08-2002 20:45:10

Geez, 20 bucks! I'm finding that $200-300 is what I'm gonna have to spend to get anything. Atleast that's what I'm told. Of course, I haven't found anything yet except the one I mentioned. Its at a used implement dealer. Of course he prices his stuff higher. If I could only find one from a farmer that doesn't need it anymore. I know there are out there.

Matt

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steve

03-10-2002 18:34:34

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Re: Re: Re: Re: Re: Re: Re: Re: Disk size for a B model in reply to Matt, 03-09-2002 13:42:12

Drive up and down the old gravel road in the country. Look at the fence rows. Mine was stuck in the 20 year old trees.

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