Yesterday's Tractor Co.
Shop Now View Cart
   Allis Chalmers Case Farmall IH Ford 8N,9N,2N Ford
   Ferguson John Deere Massey Ferguson Minn. Moline Oliver
Classified Ads
Photo Ads
Tractor Parts

Discussion Forums
Project Journals
Tractor Town
Your Stories
Show & Pull Guide
Events Calendar
Hauling Schedule

Tractor Photos
Implement Photos
Vintage Photos
Help Identify
Parts & Pieces
Stuck & Troubled
Vintage Ads
Community Album
Photo Ad Archives

Research & Info
Tractor Registry
Tip of the Day
Safety Cartoons
Tractor Values
Serial Numbers
Tune-Up Guide
Paint Codes
List Prices
Production Nbrs
Tune-Up Specs
Torque Values
3-Point Specs

Tractor Games
Just For Kids
Virtual Show
Museum Guide
Memorial Page
Feedback Form

Yesterday's Tractors Facebook Page

Related Sites
Tractor Shed
Ford 8N/9N Club
Today's Tractors
Garden Tractors
Classic Trucks
Kountry Life
Implement Alley Discussion Forum

Potato digger

Welcome Guest, Log in or Register
Author  [Modern View]

09-09-2012 20:43:18

Report to Moderator

I have an old champion potato digger, it is ground driven converted to 3 point hitch, but doesn't have enough weight to it esp in the back so it likes to scoot. I would like to convert it to PTO but i have no idea what reduction gears i would need to slow the chain down to where it needs to be, anyone on here can help me with that???

[Log in to Reply]   [No Email]

09-11-2012 10:38:12

Report to Moderator
 Re: Potato digger in reply to nh8260, 09-09-2012 20:43:18  

I have one of these little 3pt diggers, but to dig potatos i think you need to add the extra rods on the wings of the digger blades.

see attached pictures

[Log in to Reply]  [No Email]

09-11-2012 09:48:47

Report to Moderator
 Re: Potato digger in reply to nh8260, 09-09-2012 20:43:18  
Few suggestions

Use a hydraulic motor vs PTO - you can make a bracket and connect it with a loveJoy coupling to the shaft turning the digger chain. You'll save a lot on the PTO parts Gearboxes, sprockets and chain. Use a variable speed valve to control the speed and put in a check valvve to prevent you from turning it backwards by mistake.

Second clean up the points on the digger, rusty cruded up points won't go in the ground.

Go back to the tow behind setup.

If you must have a 3 point setup --- Remove all the wheels and use the smaller ones (byy some if you only have the large back ones) - install some brackest up next to the front point for depth control. The depth control will help a lot

Hopefully this will work. All but a few diggers are tow behind. They generally are much shorter.

Send some pictures to show us how you made out.

[Log in to Reply]  [No Email]
Old Iowa

09-11-2012 06:40:09

Report to Moderator
 Re: Potato digger in reply to nh8260, 09-09-2012 20:43:18  
Do you have it set up so that the digger is free floating???? IF you are trying to have the top link solidly mounted it will not work because it is lifting the rear off the ground when you go over a hump. IF I was three point mounting it I would use a chain linkage in the top link. Then you could set it out long enough to let the digger float.

They had a manual lift system on them. This raised the digger plenty high enough. Is your missing this???

Why don't you pot us some picture of what you have done. That way we can see if we can help you make it work as it is.

To convert it to PTO drive is going to be costly and will more than likely tear it up. The wheels being able to slip is the slip clutch on the old ground driven diggers.

[Log in to Reply]  [No Email]

09-09-2012 21:49:23

Report to Moderator
 Re: Potato digger in reply to nh8260, 09-09-2012 20:43:18  
If you can get a right angle gearbox with a 2:1 reduction on it and then run a 5 inch sprocket on the output shaft to a 6 inch sprocket on the driveshaft for the apron chain this will give you a apron speed of about 225 rpm, which is just about right for running at two mph approximatly with yor tractor. make darn sure you include some kind of slip clutch or belt on this though because if you get a rock jammed in the apron your chain will be stretched out into a collection of horseshoe shaped parts. seen plenty of that when someone didnt loosen their slipclutches at the start of the harvest season, just for info new apron chain will cost right about $1000 per roll on a modern harvester.

[Log in to Reply]  [No Email]

09-10-2012 17:58:04

Report to Moderator
 Re: Potato digger in reply to Handyman, 09-09-2012 21:49:23  
i saw a video on you tube of a ground driven digger that had a longer tongue on it then the 3 point hookup, like 3-4 foot long, and it was digging perfect, even in harder clay dirt, mine has the 3 point right up close to the digger, would the longer tongue make it do better? maybe not pick up in the back so easy???

[Log in to Reply]  [No Email]

09-10-2012 20:16:10

Report to Moderator
 Re: Potato digger in reply to nh8260, 09-10-2012 17:58:04  
It might be a good idea to try converting it back to a trail type digger, if nothing else you could also try hanging some weights on the back of the digger to hold it down better

[Log in to Reply]  [No Email]

09-10-2012 21:43:20

Report to Moderator
 Re: Potato digger in reply to Handyman, 09-10-2012 20:16:10  
problem with the pull type setup that was on it was the hitch was so high i had nothing to hook it to but a 3 point drawbar and that didn't work too well, i can't seem to find a front truck that would make things work great!!

[Log in to Reply]  [No Email]

09-11-2012 05:49:34

Report to Moderator
 Re: Potato digger in reply to nh8260, 09-10-2012 21:43:20  
You could build a truck yourself or have someone build one for you that would fit the digger the way it is set up now, cost might be a problem if you have one made by someone else though. might be cheaper to just hang some weights on it and try useing it as it is right now,that would depend on if your three point could lift the additional weight though.

[Log in to Reply]  [No Email]
[Options]  [Printer Friendly]  [Posting Help]  [Return to Forum]   [Log in to Reply]

Hop to:

Fast Shipping!  Most of our stocked parts ship within 24 hours (M-Th). Expedited shipping available, just call! Most prices for parts and manuals are below our competitors. Compare our super low shipping rates! We have the parts you need to repair your tractor. We are a company you can trust and have generous return policies. Shop Online Today or call our friendly sales staff toll free (800) 853-2651. [ About Us ]

Home  |  Forums

Copyright © 1997-2016 Yesterday's Tractor Co.

All Rights Reserved. Reproduction of any part of this website, including design and content, without written permission is strictly prohibited. Trade Marks and Trade Names contained and used in this Website are those of others, and are used in this Website in a descriptive sense to refer to the products of others. Use of this Web site constitutes acceptance of our User Agreement and Privacy Policy

TRADEMARK DISCLAIMER: Tradenames and Trademarks referred to within Yesterday's Tractor Co. products and within the Yesterday's Tractor Co. websites are the property of their respective trademark holders. None of these trademark holders are affiliated with Yesterday's Tractor Co., our products, or our website nor are we sponsored by them. John Deere and its logos are the registered trademarks of the John Deere Corporation. Agco, Agco Allis, White, Massey Ferguson and their logos are the registered trademarks of AGCO Corporation. Case, Case-IH, Farmall, International Harvester, New Holland and their logos are registered trademarks of CNH Global N.V.

Yesterday's Tractors - Antique Tractor Headquarters