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Pallet fork lifting adapter/extension arm

Posted: Tue Nov 29, 2022 11:36 am
by thebuildist
You may have seen it on the other site, but used my new pallet forks to carry "George", my giant nutcracker down to his Christmas display location.
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But when it came time to install his head/hat up on the shoulders, I could barely do it. The height of the pallet was barely high enough, and without going to get a stepladder, I had to reach everything from down below.
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If I had a helper, I could have stood on the pallet and been lifted up in the air with the head/hat. But I was working alone.

So I realized it's time to make one of the final accessories for the pallet forks: A lifting adapter with extension boom.

The first thing is a relatively straightforward lifting adapter. It slides over the pallet forks, and pins in place via a hole in the lefthand fork. It serves to join the two fork tine tips together, and then has a chain hook suspended from it. It's easily as strong as the overall fork tips can lift, somewhere around 800 lbs.
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But that still won't lift high enough to suspend George's head up above his shoulders. That's where the extension boom comes in.

I took a 10' long piece of 1 inch pipe and welded on a series of top, left side, and right side cantilevered tension braces. It only weighs about 35 lbs. The tension braces are 3/8" all-thread.
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Then I created a screw-in stub piece up at the lifting end that contains a D-ring from which to suspend a load.
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Then I welded a piece of flat bar to the bottom of the extension boom right at the fulcrum point where the boom rests on the front flange of the lifting adpater. I drilled and tapped the bar so that it can be bolted to that flange with 1/2" wing bolts.
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Then I made a "tailpiece adapter", a bracket that slides to the back end of the pallet forks, and captures/holds the tailpiece of the extension boom.
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So you slide on the tailpiece adapter, and then slide on and pin in place the lifting adapter. Then you slide the tailpiece of the extension boom into the tailpiece adapter, and bolt the boom's bottom plate to the front flange of the lifting adapter.

You now have an extension boom that effectively makes your fork tines about 10 feet long.
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The boom is strong enough that the tractor will tip forward well before the structure itself will bend or fail.

With the 300lb counterweight on, I could hang all my 220 lbs from the boom's D-ring when it was about 8' in the air and at about a 45 degree angle. If I curled the tines much forward from 45 degrees, my weight was enough to tip the tractor forward.

So in the end, the D-ring can go about 14' high, and has a lifting capacity of between about 100 and about 400 lbs, depending on the tilt and position of the pallet forks.
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I anticipate that it'll be a very handy tool to have, but one that could easily cause injury or damage if you try to lift too much and/or at the wrong angle. Just imagine every "crane tipping over" video you've ever seen, but in much smaller scale. :30:

Bob

Re: Pallet fork lifting adapter/extension arm

Posted: Tue Nov 29, 2022 12:32 pm
by Eugen
That's a great tool, I've always thought that a boom attachment is a must have. Nice idea with those strengthening braces. Now, I am wondering about a couple of things. Why did you use the all-thread? I'd have thought that rebar, for instance, would be cheaper and just as strong. Also, how did you decide on the length? If it was me I'd have opted for a shorter one, mainly to be able to lift a little heavier things.

Anywho, it's another piece of nice equipment you built Bob! :thumbsup:

Re: Pallet fork lifting adapter/extension arm

Posted: Tue Nov 29, 2022 2:41 pm
by Gordy
Could have used that last week to hoist Bamby for processing :thumbsup:

:cheers:
Gordy

Re: Pallet fork lifting adapter/extension arm

Posted: Tue Nov 29, 2022 3:44 pm
by DavidBarkey
Gordy wrote: Tue Nov 29, 2022 2:41 pm Could have used that last week to hoist Bamby for processing :thumbsup:

:cheers:
Gordy
:thumbsup: Did you get a good one ? The father inlaw hunts with a group of about six . They all have tags , some bucks and a couple of does . This year they got a buck and 2 does . Some years they got nothing , while others , a full quota . It all goes to a local butcher after gutting and get split up after that . It won't be too much longer and there will be no one left around too butcher , they are dying bread literally .

Re: Pallet fork lifting adapter/extension arm

Posted: Tue Nov 29, 2022 3:46 pm
by DavidBarkey
Bob you could use it to fly and extra flag on those special days .

Re: Pallet fork lifting adapter/extension arm

Posted: Tue Nov 29, 2022 3:54 pm
by thebuildist
@Eugen surely you know me well enough by now to know the answer to both of your questions:

I used 3/8 in all thread because that's what I had sitting for free in my scrap materials pile.

And I used a 10-ft stick of 1 in sprinkler pipe because... Wait for it... That's what I had sitting for free in my scrap materials pile!

But you may be right, it may be worthwhile to add an additional d ring in between to split the difference between height and strength.

But with proper angling of the bucket curl, you can already get the higher strength. But it's trickier in practice.

Bob

Re: Pallet fork lifting adapter/extension arm

Posted: Tue Nov 29, 2022 4:00 pm
by DavidBarkey
Bob , I am like you . If it is free it is in the budget . Other wise have to talk to my bank manager :wife: .
:giggle:

Re: Pallet fork lifting adapter/extension arm

Posted: Tue Nov 29, 2022 4:01 pm
by thebuildist
DavidBarkey wrote: Tue Nov 29, 2022 3:46 pm Bob you could use it to fly and extra flag on those special days .
I love the flag idea. With the boom vertical and the loader fully raised, the top of the"flagpole" would be right around 16' high. How fun would that be for driving in a parade?

Bob

Re: Pallet fork lifting adapter/extension arm

Posted: Tue Nov 29, 2022 4:08 pm
by thebuildist
Gordy wrote: Tue Nov 29, 2022 2:41 pm Could have used that last week to hoist Bamby for processing :thumbsup:

:cheers:
Gordy
I guess it all depends on Bamby. I've seen whitetails in the southern US that barely break 100 lbs. And what I think is the same species up in corn country in the northern US that would be right near the limits of this contraption.

I've never understood why the deer are so much larger up north.

Bob

Re: Pallet fork lifting adapter/extension arm

Posted: Tue Nov 29, 2022 7:34 pm
by JSinMO
I had the same thought as @Eugen , a connection point in the middle of the boom may be nice for heavier items.
If you did need to lift something heavy with the boom what would happen if you anchored the tractor? It would be stationary but could get a heavy load into the back of a truck.
With your skills and a properly placed block and tackle I think you could have it lifting at capacity!

Anyway another well built project! :thumbsup:

Re: Pallet fork lifting adapter/extension arm

Posted: Wed Nov 30, 2022 12:28 am
by Gordy
DavidBarkey wrote: Tue Nov 29, 2022 3:44 pm
Gordy wrote: Tue Nov 29, 2022 2:41 pm Could have used that last week to hoist Bamby for processing :thumbsup:

:cheers:
Gordy
:thumbsup: Did you get a good one ? The father inlaw hunts with a group of about six . They all have tags , some bucks and a couple of does . This year they got a buck and 2 does . Some years they got nothing , while others , a full quota . It all goes to a local butcher after gutting and get split up after that . It won't be too much longer and there will be no one left around too butcher , they are dying bread literally .
Extra fresh road kill ;) NOT my truck, :phew: I saw 4 ways flashing ahead in the dark, as i pulled up behind it I saw bambi a yearling doe on the shoulder. The lady was upset and did not know what to do, I had her call the cops to get a report to help out with the insurance Co. While she was doing that I inspected the front of her brand new (30 miles) Escalade :cuss: The left front corner was obliterated below the headlight, radiator was fine and no fluid leaks. When I told her this and that she was OK to head for home, she said something was rubbing as she pulled over. Another look revealed some plastic against the tire above the upper ball joint. The steel bracket that held the plastic was bent a bit, but was so lightweight I bent it back with 1 hand.

All that plastic crushing really reduced the impact damage to Bambi, a broken leg and pelvic bone. It must have slammed it head on the road as blood had come out the nose, mouth and ears, pretty much an instant kill.

I butcher my own, but don't do any fancy cuts especially with these small ones. Just separate the front quarters / shoulder blades from the rib cage, fold the mid leg up to the shoulder blade and tie with string and call it a bone in roast. Same for the rear quarters. Then remove the tenderloins, back straps and neck for a soup bone. Already ate the liver, could never stand it as a kid, but Mom always fryed it dry and tough. I sliced it and laid it in a roasting pan and covered it with inch long bacon slices with 1/4 cup of water. Put it in the oven at 350* for an hour, moist and tasty.

:cheers:
Gordy

Re: Pallet fork lifting adapter/extension arm

Posted: Wed Nov 30, 2022 10:12 am
by Eugen
@Gordy you live a life full of adventure! I want more adventures like you! :D

Re: Pallet fork lifting adapter/extension arm

Posted: Wed Nov 30, 2022 1:10 pm
by Eugen
thebuildist wrote: Tue Nov 29, 2022 3:54 pm @Eugen surely you know me well enough by now to know the answer to both of your questions:

I used 3/8 in all thread because that's what I had sitting for free in my scrap materials pile.

And I used a 10-ft stick of 1 in sprinkler pipe because... Wait for it... That's what I had sitting for free in my scrap materials pile!

Bob
Yes yes Bob, I have thought of that. But I was thinking that if you use up the all thread now, it'll be more expensive to buy when you will need it in the future, than some rebar. Anyway, it's nice you guys have all this scrap around. Maybe 20 years from now I'll be like you, having scrap that I could use for various projects. :cheers:

Re: Pallet fork lifting adapter/extension arm

Posted: Thu Dec 01, 2022 11:35 am
by thebuildist
Well, I was wrong.

I'm a big enough man, and a secure enough man, and a man of enough integrity to admit when I'm wrong.

And I was wrong when I said, "the extension boom's capacity is between about 100 and 400lbs depending on its position." The truth is I had guesstimated, based on how close it felt to tipping, that it would have tipped if I pushed it further forward from 45 degrees.

So, I decided to document the point at which my fully clothed 220 lbs can cause the tractor to tip forward. So I set up my video camerat, and put the boom at about 45 degrees, and it supported my weight as I expected.
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And then I tipped it forward to about 30 degrees



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And to my mild surprise, it still supported my weight
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So I tilted it forward to more like 15 degrees




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And it STILL supported my weight.
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So I put that sucker STRAIGHT DEAD LEVEL
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I my measley 220 lbs still failed to tip the machine forward.


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And with me sitting in the seat, it would surely support about 300 lbs before it would tip.

SO: apparently it would be more accurate to say, "Its capacity is about 300 to... 500?lbs, depending on the boom position."



I feel really good getting that off my chest.
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HOWEVER, there's another, darker, side to this: Having used this boom to move my smaller giant nutcracker (about 8 feet tall, no more than about 150 lbs.) I have realized that it is impossible, at least for me, to finesse the movement of this boom. Maybe after a lot of use and acclimatization, I'd get smoother, but for now I make silly, jerky, mistaken movements. And if you had any load slung that could cause the tractor to tip, at least with me at the controls, it's inevitable that I'm going to curl the boom too far forward or make some other mistake, and therefore tip the machine over and damage the machine, the load, or the operator. I would clearly "hang myself" with the plentiful "rope it gives me".

So, in light of that reality, "the capacity of this unit is about 300lbs." Full stop.

Bob

Re: Pallet fork lifting adapter/extension arm

Posted: Thu Dec 01, 2022 11:58 am
by DavidBarkey
@thebuildist Bob , it is not you , but rather the length of the boom accellerating any motion . I have seen a number of these things in action . Most guys who use them regularly have a winch on them for your up and down movement . Over all height and angle set with hydraulics and then winch for up and down .

Re: Pallet fork lifting adapter/extension arm

Posted: Thu Dec 01, 2022 12:46 pm
by Eugen
Only a hydraulic winch would befit this all hydraulic tractor Bob. Moreover, conveniently attached to your grapple hookups. Surely you have some hydraulic motor in your stash that you could use for this. :giggle:

Re: Pallet fork lifting adapter/extension arm

Posted: Thu Dec 01, 2022 2:10 pm
by thebuildist
YOU DO NOT KNOW

how close I've come to buying an hydraulic motor, on multiple occasions.

I've never found one scrap, so retail is my only option.

And it kills me.

I have the plan and almost all the components for a bucket-borne concrete mixer.

AND for a 3-poinr post hole digger.

AND for a 3-point stump grinder.

Except the wretched motor. And I can't bear to part with more than 100 U.S. Greenbacks just to find out how well/whether it will actually work.

If you hear of anyone in the Atlanta area throwing away any hydraulic motors, be sure to let me know.

:)) :)) :))

Bob

Re: Pallet fork lifting adapter/extension arm

Posted: Thu Dec 01, 2022 2:34 pm
by Eugen
thebuildist wrote: Thu Dec 01, 2022 2:10 pm YOU DO NOT KNOW

how close I've come to buying an hydraulic motor, on multiple occasions.

I've never found one scrap, so retail is my only option.

And it kills me.

I have the plan and almost all the components for a bucket-borne concrete mixer.

AND for a 3-poinr post hole digger.

AND for a 3-point stump grinder.

Except the wretched motor. And I can't bear to part with more than 100 U.S. Greenbacks just to find out how well/whether it will actually work.

If you hear of anyone in the Atlanta area throwing away any hydraulic motors, be sure to let me know.

:)) :)) :))

Bob
haha! Bob, I got a Case 220 hydraulic motor from ebay for $50 plus shipping, a while ago. Now I have too many! My point is, you can flip parts from a cheap tractor you might find locally, and keep the tractor. But I don't know, maybe for this application an electric winch would be just fine. It is geared already, has a steel rope, much easier really.

Re: Pallet fork lifting adapter/extension arm

Posted: Thu Dec 01, 2022 4:10 pm
by Gordy
Eugen wrote: Wed Nov 30, 2022 10:12 am @Gordy you live a life full of adventure! I want more adventures like you! :D
Quite boring actually. Am surprised at no icky or gross comments about the liver thou ;) I do need to get Moms recipe for pickled heat thou :drool:

:cheers:
Gordy

Re: Pallet fork lifting adapter/extension arm

Posted: Thu Dec 01, 2022 4:32 pm
by Eugen
Gordy wrote: Thu Dec 01, 2022 4:10 pm
Eugen wrote: Wed Nov 30, 2022 10:12 am @Gordy you live a life full of adventure! I want more adventures like you! :D
Quite boring actually. Am surprised at no icky or gross comments about the liver thou ;) I do need to get Moms recipe for pickled heat thou :drool:

:cheers:
Gordy
I cannot stand liver of any kind, as food. But I met many people who loved it. No accounting for taste eh? :sick:

Re: Pallet fork lifting adapter/extension arm

Posted: Fri Dec 02, 2022 7:15 am
by Harry
Eugen wrote: Thu Dec 01, 2022 4:32 pm
Gordy wrote: Thu Dec 01, 2022 4:10 pm
Eugen wrote: Wed Nov 30, 2022 10:12 am @Gordy you live a life full of adventure! I want more adventures like you! :D
Quite boring actually. Am surprised at no icky or gross comments about the liver thou ;) I do need to get Moms recipe for pickled heat thou :drool:

:cheers:
Gordy
I cannot stand liver of any kind, as food. But I met many people who loved it. No accounting for taste eh? :sick:
A restaurant near me closed this past summer. I could not go by without stopping in every time we would drive to Lake Ontario. They featured a "Gordy's Special Breakfast." It was two eggs any way you want them, with chicken livers, stewed tomatoes and sour dough bread! I going to miss those delicious meals!
Keep the :peace: :cop:
Harry