ETA Subsoiler

[alancamby]

How large is that flatbar you used for the main shaft on yours?

3/4"x6" 1018.

 

[alancamby]

I've not seen one available any bigger or better than ETA's.

This is the one I originally wanted before I decided to build my own. I was wanting to use the shank from this one but it is $500 just for the shank.

http://landoll.com/content/files/8413/7512/4429/SubSoiler-PhotoGallery2_1000x667px.jpg

 

[Sysop]

Well I don't want to kick you while your down or at least distracted by your own problems. But apparently 40 HP is enough to bend the ETA subsoiler if the tractor is as well set up as yours.

I don't consider it to be a kick while I'm down, I'm seriously inquiring. I researched before buying and there are folk who use the ETA with more powerful machines than mine and do fine. I can only guess they just don't build the traction I do. "Mahindra- pull more" is more than just a slogan I guess...

Another contributing factor may have been the HST also. When you hit something immovable like that with a hydro machine and the pressures load up, it doesn't react quickly to letting off. Couple that with the fact, the less you are pressing on the HST go-pedal, the more torque it is delivering. So when something you hit drags you to a stop and you let off, it continues to increase the torque delivered just before stopping.

 

[vtsnowedin]

Another contributing factor may have been the HST also. When you hit something immovable like that with a hydro machine and the pressures load up, it doesn't react quickly to letting off. Couple that with the fact, the less you are pressing on the HST go-pedal, the more torque it is delivering. So when something you hit drags you to a stop and you let off, it continues to increase the torque delivered just before stopping.

I had never considered that before. Your natural tendency as an operator is to keep moving forward so with an HST hitting an immovable object you might tend to keep feeding the Go pedal in what is in effect it's lowest gear rather then declutching a gear tractor to keep it from stalling.
I think you are on to something there.

 

[Sysop]

Yep. If you hold it you'll just spin the tires. When you let off, it is essentially changing into lower gears and creating more torque until it comes to a stop and as the tires slow their rotation they gain additional traction on the ground applying more of the produced torque to the "hang up"... Maybe Ted can make a few upgrades for a new model for heavy HST compacts.

 

[vtsnowedin]

Yep. If you hold it you'll just spin the tires. When you let off, it is essentially changing into lower gears and creating more torque until it comes to a stop and as the tires slow their rotation they gain additional traction applying more of the produced torque to the "hang up"... Maybe Ted can make a few upgrades for a new model for heavy HST compacts.

I'll have to save this for the next time a Gear Vs. HST debate comes up. Might have to wait four or five hours.

 

[Sysop]

Maybe I should do my subsoiling in 2nd gear so the HST is not able to make too much torque for the job... Guys with 40HP gear units would get jealous...

 

[k0ua]

Maybe I should do my subsoiling in 2nd gear so the HST is not able to make too much torque for the job... Guys with 40HP gear units would get jealous...

Not a bad Idea.. this will take some of the "starch" out of the HST when the pull gets heavy. Might just be enough to keep from bending all the steel. You can still go as slow as you need to go. Or you can trade that heavy butted Mahindra for a Kubota and solve the problem that way!:laughing:

 

[Sysop]

I am beginning to look around at lighter-weight tractors for mowing and gardening chores, but my primary use is still dirt work and 95% of the time I need the machine I have, as it currently is. I've only ever bent one other item, which was a standard duty box blade. It was easy to replace the bent piece and reinforce from having happen again but not be so strong I have concerns of breaking the tractor. With this just being a plate of steel I don't think I can get straight enough, nor is there any means of strengthening it. Hopefully ETA can sell just that main plate.

 

[C4Ranch]

What blows my mind is the sheer pins entire purpose in life is to prevent this.
You can see from my post on pg 1 that I hit some big rocks and no problems. Bigger tractor and I was in L turtle but my ground was loose.
I wonder what the true bending force is for that plate steel vs the sheer pin.