Homemade 2 shank subsoiler

   / Homemade 2 shank subsoiler #51  
Great job! A video would be nice if you get a chance.
 
   / Homemade 2 shank subsoiler #53  
Full depth in dry soil, no less. Nice!
 
   / Homemade 2 shank subsoiler #54  
My father in law had a big DMI subsoiler took +250 HP to pull.

It had small wing type protrusions on the replaceable tooth to increase the scattering of the soi hardpan. As your subsoiler pull easy enough adding the wings may help loosen your soil.
 

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   / Homemade 2 shank subsoiler #55  
My father in law had a big DMI subsoiler took +250 HP to pull.

It had small wing type protrusions on the replaceable tooth to increase the scattering of the soi hardpan. As your subsoiler pull easy enough adding the wings may help loosen your soil.
I agree. Add a ~ 6" shovel (wing) to the chisel points you have now for a greatly improved shattering of dry soil.
 
   / Homemade 2 shank subsoiler
  • Thread Starter
#56  
We had a severe storm hitting the Portuguese islands of Azores and Madeira, so we're now getting some of the leftovers in mainland. Mostly those quick showers that come and go. Either way, rain is more than welcome to come.

Anyway, still managed to use the subsoiler some more on the olive grove and got some clips of it working.

The front end is a little bit on the light side since I took the front weights off a couple months ago. I could use the loader but just gets in the way most of the time. I'm also still running tire pressure for loader work at the front which won't help much. The rear are right at 14 PSI or a little bit less and are loaded with water.

I'm super stoked on how everything worked. Heck, I would be happy if the thing would just dig by itself, let alone pull it full depth. I'm really surprised the tractor pulled it so nicely. I did bring it back home for a nice coat of paint and I'm still going to cut the back corner of the shanks.

I did play a little bit with the draft control but wouldn't let me go full depth, only like 3/4 depth. Looks like I need to do some adjustments on the linkage possibly so I can use it more reliably.

Here is the video:

 
   / Homemade 2 shank subsoiler #57  
I did play a little bit with the draft control but wouldn't let me go full depth, only like 3/4 depth. Looks like I need to do some adjustments on the linkage possibly so I can use it more reliably.
Draft control wont help you subsoiling, the legs extending so far down puts too much pressure on the top link to make it do other than simply lift your implement. A plough is much longer, creating different draft control dynamics.
 
   / Homemade 2 shank subsoiler #58  
I did play a little bit with the draft control but wouldn't let me go full depth, only like 3/4 depth. Looks like I need to do some adjustments on the linkage possibly so I can use it more reliably.

Yep, shortening the top link will creat more clearance angle under the foot when it's fully buried. As is, that heel and bottom might be plowing way down there too.

it would be interesting to "streamline" the shanks' 1 1/4" x 15" or so frontal area. Maybe tacking a 15" long strip of 1/4" x 1/2", on edge, down the center of their faces. A lazy way to kinda chamfer them.

But dam, it's good enough on the first try.
 
   / Homemade 2 shank subsoiler
  • Thread Starter
#59  
Yep, shortening the top link will creat more clearance angle under the foot when it's fully buried. As is, that heel and bottom might be plowing way down there too.

it would be interesting to "streamline" the shanks' 1 1/4" x 15" or so frontal area. Maybe tacking a 15" long strip of 1/4" x 1/2", on edge, down the center of their faces. A lazy way to kinda chamfer them.

But dam, it's good enough on the first try.
I forgot to mention that before but I did chamfer the shanks a little bit. Still has about 1/4" width at the crest (?) but I got fed up of the grinder and grinding dust. I figured some serious work hours will take care of that.

Once I do more testing, I'll play with different top link lengths and also the different holes on the top link mount.
 

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