Liberty Backhoe
- Thread starter DrZaius7
- Start date
kennyd
Advertiser
I just replied to your thread in the JD forum...I believe that they are 3PH mounted and NOT subframe mounted. You do NOT want a 3PH mounted hoe on your tractor.
kennyd
Advertiser
It's not a "wear" thing, it is stress. Some of the castings in the rear are aluminum...and just not designed to handle the loads that a backhoe can impose on it. If you talk you your dealer-I bet they will void the warranty also if you use such a hoe.
The JD subframe mounts under the tractor, and bridges the rear and front halves to distribute the load evenly. It is perfectly matched and easy to mount/dis-mount.
The JD subframe mounts under the tractor, and bridges the rear and front halves to distribute the load evenly. It is perfectly matched and easy to mount/dis-mount.
RoyJackson
Rest in Peace
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Not just stress on the 3PH area...read (on TBN mostly) about a number of tractors with 3PH backhoes that broke about midsection (I'm pretty sure most probably used the transmission case as a frame member). These weren't always aluminum castings involved (cast iron).
All that said, there have been a number of guys using 3PH 'hoes for a number of years with no problems. Just make sure you work within the limits of the backhoe and tractor.
But, I'd also want a subframe to distribute the load. The dollars you save buying the 3PH 'hoe would be easily offset by the money required to repair/replace the tractor if it breaks.
Fawken
Platinum Member
I have been using one of these for over a year on my little Ford. Works great and puts no more strain on the lift than my 48" tiller. Probably less. The mount is a rigid type which means that the rear lift is not involved in lifting or holding up the backhoe. The unit weighs about 600 lbs.
Fawken, let's say you're digging a hole and everything is going great until you catch a root or a big rock. No problem, you figure, I'll just give it a few extra tugs with the backhoe and she'll pop right out. So you tug and you tug, but no dice, it's not moving. Well, there's that old Newton's law, how does it go? For every action, there's an equal and opposite reaction... something like that? So all those tugs were pulling backward on your 3 point with the same force you put on the object in the ground. And it's going right into the back end of the tractor wherever the top link attaches to the tractor.
Pull hard enough and often enough on immovable objects with a 3 point backhoe and you break the tractor. Tractors aren't designed for that kind of abuse. Take it easy when digging, don't go after immovable objects like a wild man, it will probably do just fine.
Fawken
Platinum Member
I've dug up more big roots and rocks than I can remember. Are you asking me a question? Or trying to make a statement? I have used construction equipment for 40 years and my best advice to you is don't dig without the stabilizers (outriggers) down. Relatively little force is transferred to the linkage. The digging or prying action creates pull between the stabilizers and the bucket. As an example, you could probably mount this thing to a lawn mower and it would be nearly as effective. In fact, Northern Tool has a similar design which is basically the backhoe monted on a small trailer with a motor to run the hydraulics.
First of all, peace, brother. Not trying to interrogate you or pick an argument. Trying to keep anyone who uses a 3 pt hoe aware of some inherent safety considerations. If I yanked your chain in some way trying to do that, well, my bad.
Here are some examples of accidents that resulted from either breakage or the failure to properly secure the linkages on a 3 pt. hoe:
http://www.tractorbynet.com/forums/safety/40074-3ph-backhoe-limiter-safety-bar.html
http://www.tractorbynet.com/forums/safety/26166-death-back-hoe-canopy.html
mounted back hoe
Beyond that, everything in my experience has pointed to that toplink being under additional stress with a 3 pt hoe. In fact, some of the tractor manufacturers actually offer reinforcing kits for the toplink attachment points on their equipment for use with 3 pt hoes.
Here's a question for you: If there's very little force going to your toplink and the stabs are carrying the load, you could probably operate the backhoe without it, right? Do you think you could lift the boom off the ground if the toplink wasn't attached? What about with a full bucket? Could you easily remove a good sized rock? I'm willing to learn here, but the way I see it, your lifting and curling power requires both the stabs and the toplink to get any leverage.
I've looked at some of the Youtube vids of that Northern Tool unit and a few others like that. What I saw mostly confirms my point... any time the operator tried to lift a seriously heavy scoop vertically, the road wheels came up off the ground because there was no leverage.
The world won't end if we disagree about that toplink, but I'm sure we can agree that any equipment - backhoe or what have you - needs to be operated safely. Cheers.
Here are some examples of accidents that resulted from either breakage or the failure to properly secure the linkages on a 3 pt. hoe:
http://www.tractorbynet.com/forums/safety/40074-3ph-backhoe-limiter-safety-bar.html
http://www.tractorbynet.com/forums/safety/26166-death-back-hoe-canopy.html
mounted back hoe
Beyond that, everything in my experience has pointed to that toplink being under additional stress with a 3 pt hoe. In fact, some of the tractor manufacturers actually offer reinforcing kits for the toplink attachment points on their equipment for use with 3 pt hoes.
Here's a question for you: If there's very little force going to your toplink and the stabs are carrying the load, you could probably operate the backhoe without it, right? Do you think you could lift the boom off the ground if the toplink wasn't attached? What about with a full bucket? Could you easily remove a good sized rock? I'm willing to learn here, but the way I see it, your lifting and curling power requires both the stabs and the toplink to get any leverage.
I've looked at some of the Youtube vids of that Northern Tool unit and a few others like that. What I saw mostly confirms my point... any time the operator tried to lift a seriously heavy scoop vertically, the road wheels came up off the ground because there was no leverage.
The world won't end if we disagree about that toplink, but I'm sure we can agree that any equipment - backhoe or what have you - needs to be operated safely. Cheers.