Adding Box Blade Rippers

   / Adding Box Blade Rippers #1  


Bronze Member
Jul 22, 2006
NW Alabama
I havent posted here very much but usually check the forum daily. All I can say is this is a great forum with lots of talent and a wealth of great ideas. Very interesting!

I want to add rippers to my box blade. I have ordered the ones from ASC # 49684 Box Shank. I need to know how far below the bottom of the box they should extend when in the fully extended position. Also any tips on how to make them work better, stronger etc..
   / Adding Box Blade Rippers #2  
The box they are in is often 2 pieces of 3" x 1/4 or 3/8" angle welded to make a box. Slots are cut prior to welding it together. The thrust surface may have an extra 2" wide strap of 3/8". Double loops on the top with a pin to hold them is also common. Minimum is about 2-3" below the bottom of the box sides. When you don't want to rip, take the shanks out and flip them upside down and put back. (tips up facing rear)
   / Adding Box Blade Rippers #3  
Those Agri-supply shanks are great. I found they are much better than the stock ones which were on my 7' Howse box blade. Those had slots in them instead of holes and I was bending and breaking them right at the slots. The holes on the Agri-Supply ones offer a stronger geometry, not having a built in weak point like the slotted ones. They are a pretty good deal too.
Here are the stock ones with the slots cut out. they are a little out of shape now.

When I re-modeled my box blade to accept the Agri-supply shanks I made it so they could extended 6" below the box when the box was level to the ground and the shanks were held by the top hole. Tilting the box blade forward I could down about 9", but with all the hard pan and rocks on my property, my 55 hp (8000lb fully loaded) tractor would lose traction, so it made no sense. Even so, I only made my hydraulic system travel 4", so I carried the shanks in the 2nd to the top hole. Otherwise they would always be 2" below the sides of the box.

I just re-ordered new shanks and got the 16" (3 hole) ones. They fit perfect using the top hole. Now they don't stick up above, and like I said, I really don't need to go much deeper. And they were under 10 bucks each. If I do need to rip deeper, I can tilt the box blade way forward and they go another 2" or 3" deeper anyway. That is about all the depth I need for what I want. In order to make them stronger and less prone to bending, I added supports 5/8" thick on the sides and back of the tube the shanks run through.

With these improvements, I have not bent or broken one of them, the supports and better shanks really helped.
A couple tips ... DO NOT make turns while ripping. This places lateral load on the shanks and they are only like 3/4" thick. Always pick up the box blade during a turn if you are ripping. For ripping hard pan and tough penetration, use weight on the box blade or make sure it is very heavy on its own like mine is now. For really had stuff, take several shanks out and use only 1 or 2 or 3 spread out. Then after that you can insert the rest of them and re-do that area to crumble up the chunks. Box blade the rest to level and smooth.
   / Adding Box Blade Rippers #5  
3RRL .... Is that the finished photo where you added the support? If it is, I would definitely run the whole bead where you tacked the triangle gussets.

I did something very similar to mine and your right, it has made a big difference
   / Adding Box Blade Rippers #6  
bx24 said:
3RRL .... Is that the finished photo where you added the support? If it is, I would definitely run the whole bead where you tacked the triangle gussets.

I did something very similar to mine and your right, it has made a big difference
Heck no,
Those are only tacked on for now (then).
Here's the box blade finished.

Those supports and the better scarifiers work great.
   / Adding Box Blade Rippers #7  
3RRL, that Box Scraper looks fantastic! :D

If you bend/break those shanks, we want pictures!! ;)

Nice work!
   / Adding Box Blade Rippers #8  
I purchased a box blade without the box. Meaning a simple arrangement that allowed me to do what a boxblade does without having the box to move dirt.
Or as better discribed, a root rake to go on the 3pt hitch. It is configured just like most boxblades. I was pulling it next door and caught a stump (buried just over a foot down) and it didn't bend the tooth, it ripped out the backside of the box that the tooth is mounted in. Since I also have a box blade, I haven't needed it but sometime I will need to repair and reinforce it as 3rrl has done.
The moral of the story, no matter how much you reinforce things, enough horsepower meeting an unmovable object will show you the week link in your system.
David from jax