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Offset Disc

U

UP Oliver

Member
I want to get an offset disc. How can I determine how much my tractor can handle?

What is the relationship between horsepower and disc width, or is there some other way of knowing?

Thanks.
 
Might help to know make and model of your tractor..also what soil type you have...level or hilly ground...discing plowed ground, or just discing stalks?
 
Yep,they used to pull those little 4 and 5 foot Kilifers with JD 70s and what not,but the neighbor had a Wilbeck,probably 9-10 foot and he practically wrecked that 7000 Allis with it. It wouldn't even move it without the duals on.
 
I have an Oliver 1755 right now, but I hope to get a bigger tractor some day, maybe with a cab.

A guy I know told me you need 10 horsepower per foot of disc, wondered if anyone else has heard that.

I have mostly flat ground, at least where I plan to use the disc.

Thanks for the responses.
 
Have been pulling a 10 foot white with an Massey 1105 and it works ok but it does pull hard. No need to apply brakes when stopping.

Massey makes about 120 HP.
 
when we were a Case dealer our general rule was 10' per HP but like others stated that can be a bit much heavy soil hills and the size of disc blade and blade spacing all comes into play, I have a 18' Case offset with 26" blades and 9" spacing that I pull with 150hp 4WD and it works fine but is a load for sure if you stick it in to the hubs then my 220HP 4WD works much better
a130626.jpg
 
I have a 14 foot White 281 on a JD4450 MFWD that"s rated 145 hp but cranks 190. Wouldn"t want any less.
 
We used a 10' Wil-Rich this spring, and if I would've buried it to the spindles, I would've been spinning. Pulled it with an 1855. It's a great horse when it comes to pulling tillage equipment, but even that has it's limits.

I think you may have a hard time finding a small enough one to go behind your 1755.

Donovan from Wisconsin
 
there are a lot of variables blade sizes ,spacing ,section angle adjustable or not,weight of the disc, depth of cut,type of dirt ect,daddy pulled a 20 blade bushhog with an m farmall 2 gear most of the time of coarse it was set to where the tractor could pull it, more than one person stopped by the field to watch it in action,use to disc for a neighbor he had a 28 blade taylor-way that was all a strong 1256 ih wanted,uncle had one he cut new ground with, if I remember correct was a 16 blade, wide spaced blades that adjusted from the tongue no wheels it would stall and old model 7 cat in full section in the right dirt
 
Depends on the weight of the disc... If it's your average offset meaning it has about 400-450 pounds per foot then you can get along OK most of the time with about 10 hp per foot. There are situations where less will do an adequate job and some where you need to gear down to get by with the 10/foot rule. If you want to increase the weight or the blade size beyond the 26" mark then plan on doubling up the power.

Rod
 
I just bought an 8' 22" blades, 10 per row. Interesting that the gangs are not moveable. I like that. You don't have to worry about getting it setup right as it comes that way from the factory. No name on it but it's green like the implement line JD dealers carry, not yellowish green like JD green.....don't remember the name.

Pulling it with my 57 pto HP 4wd Branson. Pulled in mid range at PTO rpms. It is heavy but I am adding 4 150# (weighed them) JD rear wheel weights to it.

Have been wanting one for a very long time and this one just showed up at a local used equip dealer. I drove by rubberneckinig a couple of weeks ago and there it was; great shape and just the right size. The whole front row of discs were new as were a couple of the rears. Had it priced at $1900. Got it for 15 with a little haggling.

Mark
 
(quoted from post at 07:43:14 10/03/13) I just bought an 8' 22" blades, 10 per row. Interesting that the gangs are not moveable. Mark
Click to expand...

Mark
Do you mean 10 blades per disk shaft? If so that means the disk are very close together for an 8 ft disk harrow or do have an offset disk? I personally prefer adjustable gangs on a tandem disk to allow for some adjustment if unit is leaving soil uneven.
 
Offset disc. Two axles, 10 per. I like it fixed. Since I never took
Farming 101 and my education has been seat of the pants with
no mentor, it is good for me to not have to figure out how I am
supposed to use an implement.

Reading on the www it says that the disc slices with the front
gang and flips the top layer over with the rear gang rather than
go down to sub soil as the moldboard does. Mine does just that.
When comparing to a tandem disc, best thing I can see is that it
doesn't lend itself to clogging like the TD does. I only used it
once so I will know more about it later on.

Mark
 
I'm a little bit amazed that you can pull it with as much power as you have in front of it. You must have some fairly light ground or you weren't going very deep?

Rod
 
(quoted from post at 09:54:17 10/04/13) I'm a little bit amazed that you can pull it with as much power as you have in front of it. You must have some fairly light ground or you weren't going very deep?

Rod
Click to expand...

Rod
I agree with you because most offset disks require more than 7 HP per foot.
 
I've got a lot of fairly light soil here. Basically sand in some places... and even then it works my TS90 pretty hard to drag 9' of disc. The blades are getting pretty worn on this one now and it doesn't cut like it used to. When that disc was new and ground conditions were even a bit wet it would stop my 7710 dead in it's tracks under full ballast. That's 12600# MFWD... In good going it handles it easily... but buried to the gang bolts it's still a damn good pull at 5.5 mph.

Rod
 
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