8-10-or12 ft disk

[Anonymous-0]

i have a 89 john deere 1450 its the 4 cylinder yanmar diesel, think its rated about 55 hp and i have a 100 frnt end loader on it, i get mixed answers when i ask guys around here how big of a disk it will pull some say 8 some 10 and i even got 12 from sumone. there is no liquid in the tires just the weight on the frnt end from the loader so what are some opinions on what size disk to look for, pretty good soil a lil heavy on the clay and should i add weight in the tires and if so will it effect the ride on the roads at 15mph. i would be happy if i could pull a 10 with no weight in the tires but i dnt know if it will pull it

 

[johns48jdb]

you'll do good to pull an 8 to a good working depoth especailly if you try to pull some type of drag behind it.

 

[usetob]

I agree with 8', your better off with a disk you can pull and do a good job than with one to large and have to ride the wheels all time. You can always add weight if you need it!

 

[paul]

In fall in soybean stubble or cornstalks that tractor would pull a 14 foot disk real easy.

In spring in freash dirt when the clay is kinda soft & fresh bumpy plowed ground & the blades sink in to the axle, pulling a 10 foot would be a real workout - would have to angle it back a little, not be 100% aggressive. There are days an 8 foot would feel better.

So.... all the fellas you've talked to are right, it depends on what you really want to do - softer spring work, or firmer fall stubble chopping.

We pulled old wheel-less style IHC disks with 35-50 hp gas tractors, one disk was 10 foot, one was 12 foot, and it was kinda like I described. Depended on the job we were trying to do. The 35 hp tractor would pull the bigger disk easy in 4th out of 5 gears in fall; but the 50 hp one could struggle some days with the 10 foot disk in spring in soft ground.

I would say you might not want the loader bouncing along in spring in rough ground - that might be quite a ride! In fall on smooth ground it shouldn't be an issue.

--->Paul

 

[Brendon-KS]

According to a Deere disk brochure (1987 vintage), a 45-55hp tractor can pull a 8.5 to 10 foot model 115 disk. The 115 was a relatively light disk with a weight per blade of 65 to 85 lbs.

 

[RodinNS]

I think 8' would be plenty for it. You may have the power for a bit more but likely don't have the tire for more or the weight to get them hooked if you did.
You'll probably cover more ground at a steady pace with 8' than digging holes with a 10' and going nowhere...

Rod

 

[Leroy]

I think you have a tractor that is the same size as the old 40-420-430 tractors that were 23-29 max pto hp and an 8' would have been a load for them as to size wise, weight and tire in a lot of conditions. Now with your extra power you are still limited to what those older tractors would handle. In a tractor of those years a tractor of 50 max pto hp would handle the 10-12' without problems but not your newer one. and on your 55 hp that is probably bare engine hp and not max pto hp and max pto hp on yours would probly be around 35 so you do not have as big a tractor as you are thinking you have

 

[Hillbilly-tn]

weight 4450 lb. drawbar 45 hp.
6" 3pt. or light 8" drag
2 16" 3pt. plow

 

[BushogPapa]

With good firm soil for traction you may do ok with a 10' but in loose soil, slippage becomes the problem..
We always put the duals on the AC WD-45 for discing (IH #37 disc with harrow) and that was a Perfect match..
Compaction is greatly reduced and you can get thru wet spots and not leave ruts..
Latch-on duals is an option and might be needed.
That loader really should come off for field-work..at least remove the bucket to lighten the load on the front-end..

 

[Hillbilly-tn]

weight 4450 lb. drawbar 38 hp. pto 45 hp.
6" 3pt. or light 8" drag
2 16" 3pt. plow

 

[Mike (WA)]

The posts below are estimating a lower horsepower than you are, but I think you are closer. Not many of those larger 50 series Yanmar Deeres around, but I've used my neighbor's 1250, which is a couple sizes smaller than yours, and I'm sure its at least 40 hp, maybe a bit more- So I'm thinking you could handle a 10 foot disc. Is yours 4WD? That would make a difference.

I wonder if the horsepower confusion is another case of JD model number recycling? I have a 4010- and its an 18.5 HP compact utility, that "the other 4010" would eat for lunch.

 

[Anonymous-0]

thanks all for your help, it looks like im gonna go out and get an 8 ft disk... i was just pulling my 4 ft disk with my 8n and not only was it hard to pull because of the deep soil the darn thing snapped the frame where the 3 point hooks up. so after yelling a long string of unfriendly words at it i figure i will get the 8 ft for the deere and park this cr@p wagon off to the side until i can have the farmer down the road weld it up for me

 

[Anonymous-0]

think it is 45 on the draw bar not sure i can't find my book right now but im gonna go to an auction up in Kentucky on the 18th and try to find one if i find an 8 ft i will be happy if i find a 1o i will be happy, not sure if i can wait that long now that i broke the small one... sure i could have it fixed tomarrow but than the rain hits every othe day for awhile so really now is my window and im down..... um.... grrrrrrr

 

[Hillbilly-tn]

38 drawbar hp 45 pto hp

http://www.external_link/farm-tractors/000/1/1/115-john-deere-1450.html
I have the bigger (about 5500lb.) 2240 that could pull a medium 8" disk.

 

[RN]

Try the 8 foot. Older brother has a JD 950 with the Japanese diesel as his current utility tractor, say it is about like old IHC H from old family farm days in handle garden work- 2 bottom plow and smaller disc no problem, big disk bogs it a bit in bottom ground. He has a JD 40 upright twin gas also- it uses the small disc (maybe a 7foot?) and 2 bottom plow so your 1450 should be able to handle about the same. Horsepower isn"t full issue- the weight for traction needs to be considered. RN.