measuring disk width

On tandem disks both John Deere and IHC measuere the cut on the back gang, only do the measurements come off the front on a single gang disk. The back gang is the total width of cut, front is not.
 
(quoted from post at 15:18:58 09/12/13) On tandem disks both John Deere and IHC measuere the cut on the back gang, only do the measurements come off the front on a single gang disk. The back gang is the total width of cut, front is not.

That is my understanding also.
 
(quoted from post at 14:18:58 09/12/13) On tandem disks both John Deere and IHC measuere the cut on the back gang, only do the measurements come off the front on a single gang disk. The back gang is the total width of cut, front is not.

Leroy
I think that's incorrect. Try to pull a 12 or 14 ft disk through a 12 or 14 ' gate respectfully or any gate the same size as the tandem. It a'int happening, I've seen tandem disk sizes listed in parts catalog but I never seen where PC states measured at the rear gangs. The 13' 10" JD 310 I owned was a little difficult to get through a 16" opening.

Disk gang bolt on an 8' JD KBA is 46"s long
B10482 GANG BOLT 1 28.575 X 1 174.750 MM (1-1/8" X 46-1/4") (8' SIZE)
 
Well there is a lot of opinions on how to do it. LOL

All I know is how JD (Sunflower too) measures theres and how the sales manual stated the widths when you ordered one. YOU DO NOT measure the back gang width!!!! It is the amount the front cuts PLUS one disk spacing. The easy way is to count the blades on the front gangs an add one then multiply that times the space between the disk blades.

Example: Lets say you have 22 blades. So you would take 22 + 1 = 23. The disk blades are 7 inch spacing. 23 x 7 = 161/12 = 13 foot 5 inch cutting width. The back of this disk would measure almost 16 feet with furrow fillers. It would NOT be called a 16 foot disk.

You are measuring the amount of NEW ground the disk will cut not the amount it levels.

If you don't believe me then look up the cutting width on JD or Sunflowers web site. Then look at how they figure it. It will be like my example.
 
Measure at the greatest width of the rear gang and add a couple or more feet. It will make the liars at the coffee shop think you have a powerful tractor, If the blades are 20 inch call them 22 inch.
 
(quoted from post at 02:10:23 09/13/13) Go disk 20 feet and measure the path.

The outer edges are not disk twice other than when you are driving the correct distance/over lap. If you make a single past the outsides of the ground are NOT disk twice. They are just pulled in. That is why there will be a low spot if you do not lap the disk just a little bit. You actually should be driving one disk spool spacing from where the front gang cut the first pass.
 
I thought you were asking a simple question untill I read what everyone had to say. I didn't realize I have been doing it wrong all these years. I think I'll take my calculater and tape and see what size disk I really have.
 

I measured this 6ft KBA and it's 6 ft in the front and 6 ft 10 in. in the rear. Parts book footnotes state 5 blades per gang is a 6 ft.
mvphoto20563.jpg
 
On the KBA books say 6 blade is 7'6" cut, 7 blade is 8'8" cut, 8 blade is 9'10" cut. And my 6 blade and the 7 blade I had measured that exactly on the rear gang when set on full angle and measured to the center of blade and center of the gang bolt. Not set on full angle will throw the measurement off. That will be the bottom center of the grove cut by the farthest outside blade on each side.
 
Leroy
It depends on the disk spacing of the KBA. I wonder if some of the parts catalogs dropped the inches off the stated measurement?
GANG FRAME, GANG BOLT, DISKS AND BEARINGS - KBA ( -1957)
(5-, 6-, 7-, AND 8-FT. SIZES)
"D" on 6ft is blades(disk) & my 6ft KBA has 5 disks per shaft.
mvphoto20569.jpg
 
If it is like the 37 that I think it replaced there were either 7" or 9" blade spacing models. So on a 10 blade model with 9" it would cut 3' wider with the 9" over the 7" spacing model. Then some disks had 7" on one axle and 9" on the other. Would have to go to my books to find out the combination. All I had were the 7" spacing.
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top