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Author Topic: backhoe from scratch and scrap  (Read 8496 times)

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Offline grouch

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Re: backhoe from scratch and scrap
« Reply #80 on: August 09, 2017, 10:56:43 pm »
The world needs more chips.


Drilling holes in brackets for the quick attach.


The quick attach assembly is not touching the mill table.
That old Taiwan milling machine and the 1924 Hendey lathe to the right, holding up the other end of this assembly being bored, were acquired at the insistence of my wife. She has a mean streak.


Boring a 1 inch diameter hole through the 2 inch square tubing for a pivot pin. Most of the pins used for the front loader and the backhoe are commodity items available in farm stores -- hitch pins, top link pins, lift arm pins, etc.


A better view of the arrangement. It took much longer to set this up than it did to bore the hole.


One more view. Scraps of wood protect the lathe.
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Offline grouch

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Re: backhoe from scratch and scrap
« Reply #81 on: August 10, 2017, 12:05:20 am »
After all that welding and drilling, it's time to try it on.


There are two 3/4 inch pipes in the photo, being used the same way a cabinetmaker uses winding sticks. (That wikipedia article describes traditional dimensions, but all I know is they need to be straight, true and twins).


View from above.


Looking back the other way.


And with the top of the far pipe just visible above the near one. If the top of that brace in the loader frame and the top of the square tube on the bucket were not in the same plane, those pipes would make the misalignment obvious.

The only problem with that is, the square tube isn't straight after all that excess and unbalanced welding. :)


Curved back does not meet flat quick attach. What a gap!


That's a big mouth for a little tractor.






The selected 2 inch bore by 24 inch stroke cylinders are about 1-1/2 inches from center of pin to outside. As shown, that would leave an inch of clearance, fully retracted.


This would be fully extended.


Left quick attach latch. Note that big gap.


Right quick attach latch. That's just too much gap.
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Offline grouch

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Re: backhoe from scratch and scrap
« Reply #82 on: August 10, 2017, 12:37:08 am »
There are people in the world who say it's ok if your bucket has a fat butt. That's only true if your tractor is capable of hauling your fat butt bucket around.






Technically, I think this is known as a bucket buttectomy.
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Offline Kbeitz

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Re: backhoe from scratch and scrap
« Reply #83 on: August 10, 2017, 02:40:32 am »
It was 64 years before I found out about drill wax sticks.
Now I'll never go without them.What a difference it makes.
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Offline grouch

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Re: backhoe from scratch and scrap
« Reply #84 on: August 10, 2017, 11:38:08 am »
Thanks, Kbeitz. I'll give those a try. Found Lassco, Drill-Ease, and BruteLube.
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Offline grouch

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Re: backhoe from scratch and scrap
« Reply #85 on: August 10, 2017, 06:05:17 pm »
Brackets for the loader cylinders.








Nice straight piece of 2 inch square tubing to make sure everything is in the same plane.




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Offline grouch

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Re: backhoe from scratch and scrap
« Reply #86 on: August 10, 2017, 06:13:37 pm »
Brackets tacked; cylinders on.










That's not good.


Closer look.


It's a 24 inch stroke cylinder.
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Offline Kbeitz

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Re: backhoe from scratch and scrap
« Reply #87 on: August 10, 2017, 07:33:50 pm »
Search e-bay...

Johnsons # 140 Stik Wax Lubricant Cutting Threading Drilling Sawing

Or.

Lassco Wizer Drill-Ease Wax Sticks Drill Lubricant

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and a bunch of new forum friends.

Offline grouch

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Re: backhoe from scratch and scrap
« Reply #88 on: August 11, 2017, 01:26:42 pm »
Exhaust relocation.


Had to get the exhaust system out of the way of that cylinder.


See it down there?




I'll just have to turn all those Nascar and NHRA guys down when they come begging me to build their headers.


That should be plenty of clearance. The cylinder is still wrapped in a plastic bag, there.


Reach for the sky!


Full extension.
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Offline grouch

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Re: backhoe from scratch and scrap
« Reply #89 on: August 11, 2017, 11:45:20 pm »
Cleaning up some details.


The back of the bucket was pieced back together like a patchwork quilt.


Temporary saw, er, torch horse -- couple of pipes, a bolt, and a load binder that's not good for much else.


Closing the posts makes them stronger.


Strange beasts lurk in dark garages.


That box was bolted to the post, now it's welded and the only bolts are to the tractor.
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Offline grouch

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Re: backhoe from scratch and scrap
« Reply #90 on: August 11, 2017, 11:54:24 pm »
Mounting version 2 of the bucket.


Clamps and jigs, again.


Eyeballing the clearance.


View from the other end. Note the curvature of that 2 inch square tubing, which is why that baby I-beam is being used for alignment.


The focus is not so good, but the clearance looks the same.


That is an acceptable gap between the almost-flat back of the bucket and the quick attach plate.


Acceptable, but could be a tighter gap.


Appears aligned with the loader frame crossbar.


One way to force the 3/16 inch back of the bucket to conform to the 3/8 inch quick attach plate.


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Offline thecfarm

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Re: backhoe from scratch and scrap
« Reply #91 on: August 12, 2017, 06:40:52 am »
I suppose you know this.............When I pick my loader up all the way up,the bucket looks level. Meaning it does not tip back towards the operator and spill some of the load out towards me.
Model 6020-20hp Manual Thomas bandsaw,TC40A 4wd 40 hp New Holland tractor, 450 Norse Winch, Heatmor 400 OWB,YCC 1978-79

Offline grouch

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Re: backhoe from scratch and scrap
« Reply #92 on: August 12, 2017, 02:10:23 pm »
I thought about adding self-levelling to it but decided that was more complexity (more things for me to break) than I needed. Being without it makes the loader a bit riskier but tougher.
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Offline grouch

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Re: backhoe from scratch and scrap
« Reply #93 on: August 12, 2017, 03:47:14 pm »
Portable drill press -- sort of.


Lining up the bucket cylinder brackets using C-clamps and 3/4 inch by 1-1/2 inch flat bar. Note the drill bit sticking out beyond that back clamp. The brackets were pre-drilled at 1/4 inch then used to mark the loader frame. That gaudy looking orange drill is a double reduction 1/2 inch drill and will happily twist you in knots if it jams. A 1/4 inch hole is no problem; a 1 inch hole is.


Another view of the situation. The loader frame won't fit on my drill press, with or without the attached tractor.


A clampable, any-position drill press in the making. The part the vise jaws are gripping is a chunk of 3/8 inch thick plate, braces are some scrap stuff, and the upright is a piece of 2 inch square tube with 0.120 wall.


This thing came off of a weight-lifting machine (people buy them and then want them out of the way; good source of various pieces of steel). It slides over a 2 inch square tube.


Another view, showing the modifications made. It has some kind of plastic material to aid in sliding. That had to come out before welding, of course.


The brackets on the slider are bored for bolts that replace the side handles on the drill. The drill also had a D handle in the rear; that's the 3rd point of support on the slider.


The rear support is easier to see in this view.


If the 2 inch square tube is square to the 3/8 inch plate, and that plate is flat, the hole should be square to the face of whatever you clamp the plate to.


The slider has a little slop, so you simply pre-load in the direction the drill wants to kick -- you lean on the handles counter-clockwise when lining up and when drilling.


Closer view of the rear support, which is adjustable to make the drill bit parallel to the square tube (ignoring whatever surface marketing decided to put on the drill body).

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Offline Magicman

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Re: backhoe from scratch and scrap
« Reply #94 on: August 12, 2017, 04:33:47 pm »
The bucket build is going nicely.

I like that drill holder.  I have one that will break your arm or whatever else is between it and where it wants to go.   :-\  :-X
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Offline grouch

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Re: backhoe from scratch and scrap
« Reply #95 on: August 12, 2017, 04:45:23 pm »
Hydraulics.


2-spool loader valve with detented float, open center with power beyond, 2000 psi relief. I think it's 7 GPM max, but can't remember. Standard pump on my Long 310 was 5.75 gpm (21.8 liters/min).




Not neat.


It's a monster. Note the muffler location.


Not quite at full extension. The doors in the background are 8 ft tall.



Bucket cylinders are 2 x 24, boom cylinders are 2-1/2 x 24.
All hydraulics -- valve, fittings, hoses, cylinders -- are from surpluscenter.com out in Lincoln, Nebraska.

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Offline grouch

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Re: backhoe from scratch and scrap
« Reply #96 on: August 12, 2017, 04:47:23 pm »
The bucket build is going nicely.

I like that drill holder.  I have one that will break your arm or whatever else is between it and where it wants to go.   :-\  :-X

Thanks Magicman. 'Bout lost your post while getting the next batch of pictures together.

I tried boring those 1 inch holes by just holding the drill. About the 2nd time it tried to twist my wrists off is when I decided to make something it couldn't twist in two.
 ;D
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Offline grouch

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Re: backhoe from scratch and scrap
« Reply #97 on: August 12, 2017, 05:06:06 pm »
Bucket version 3.
















Now it can chew what it can bite off.
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Offline grouch

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Re: backhoe from scratch and scrap
« Reply #98 on: August 13, 2017, 12:07:23 am »
Teeth.


Mild steel is not the best material for bucket teeth, but it's what's on hand that counts.


1 inch thick by 3 inches wide flat bar, cut to 1-1/2 inches.


Notch for the cutting edge of the bucket.


Notched on diagonally opposite corners.


Step drill to 5/16 inch for tapping 1/2-13.




Using the drill press chuck to get the tap started straight.


And deepen the threads with a tap wrench. (Can't go all the way through in this setup).


Slice 2 teeth at once. Note on the left that the piece is hard against the saw fence.


Almost through.


Clean up and finish the threading.


Six itty bitty teeth installed. They make a lot of difference when using the loader to peel some clay and sandstone.


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Offline Ox

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Re: backhoe from scratch and scrap
« Reply #99 on: August 13, 2017, 09:53:32 am »
You sure have alot more work in this project than I realized.  I hate doing things over so much I would have left the bucket alone after the first round.  Your mind works in ways mine never will to solve problems.  I'm envious.  Sometimes in the past I thought I was clever but after this forum I now realize I'm just a babe in the woods.

I'm getting my chuckles in at your little elbow jabbed comments.  Think about standing in your yard and you're telling me the story of your loader and backhoe and you give me a jab with your elbow and say "I couldn't get the loader and attached tractor to fit on the drill press...".  :D  You really do crack me up.  I like to think I'd be able to meet you someday.  KY was my first choice to move to but because of the inheritance tax there I'm think AL is better now...  I've got an uncle in TX that's pretty comfortable and I expect to get some kind of inheritance when he passes.  This info is from him, not from me rubbing my hands together, drooling, being greedy, and softly and evilly laughing thinking of wads of cash.
K.I.S.S. - Keep It Simple Stupid
Use it up, wear it out, make it do or do without
1989 GMC 3500 4x4 diesel dump and plow truck, 1964 Oliver 1600 Industrial with Parsons loader and backhoe, 1986 Zetor 5211, Cat's Claw sharpener, single tooth setter, homemade Linn Lumber 1900 style mill, old tools