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Author Topic: backhoe from scratch and scrap  (Read 8909 times)

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Offline grouch

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Re: backhoe from scratch and scrap
« Reply #220 on: September 06, 2017, 12:20:52 pm »
I wore out a pneumatic one. Never seen an electric needle scaler.
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Offline grouch

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Re: backhoe from scratch and scrap
« Reply #221 on: September 07, 2017, 02:29:41 pm »
Bucket.


Sides tacked together with 3/8 inch rebar as spacers. Front edge welded in place.


It resembles a bucket at least.
(Yes, Kbeitz, it was already getting heavy at this point).


Front edge to side panel weld. 1/8 inch 7018 rod. Not too bad; a little cold maybe.


Ugh. This is why I have a basket on top of my AC/DC welder just to hold grinders. No way to look at something like that and say, "That's good enough".


Back is on.


Bucket is 16 inches wide, outside to outside, and the main curves of the sides are 19 inch radius. (Will try to post dimensioned drawings at the end of all this).


The rest of the bucket comes from the 3/16 inch thick stuff cut off the front bucket during the bucket buttectomy a few pages back.


A propane weedburner, a railroad rail 'anvil', and a gentle persuader used to make the curve match the bucket sides better.


Tacking and clamping to finish persuading the 3/16 inch thick steel to conform.
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Offline grouch

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Re: backhoe from scratch and scrap
« Reply #222 on: September 07, 2017, 02:41:49 pm »
Bucket.


Closer view of tacks used to get that panel to match the sides.


Working it in, tack by tack.


That corner is out by about the thickness of the steel -- 3/16 inch.


Almost looks like rivets. Almost, that is.


More complete view of the clamp used to pull that last bit into place.


Bottom is flush with the sides. Note the vise grips and strip of 3/8 steel used to make sure I didn't pull that thing off the table onto my toes while clamping, beating and tacking.


Heavy tacks, but I didn't want it springing back out.


Closer view of the corner fit to front.


Center, where the 3/16 inch bottom is tacked to the 3/8 inch front.


Other corner at front.


4th corner tacked.
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Offline Crusarius

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Re: backhoe from scratch and scrap
« Reply #223 on: September 07, 2017, 03:01:59 pm »
you did not add any taper to the back of the bucket? How does the dirt come out when you are digging. All of the buckets I am aware of are narrower in the back than the front. This helps the material come out easier. Also makes digging easier not dragging the entire side of the bucket along the dirt.
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Offline grouch

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Re: backhoe from scratch and scrap
« Reply #224 on: September 07, 2017, 06:15:26 pm »
you did not add any taper to the back of the bucket? How does the dirt come out when you are digging. All of the buckets I am aware of are narrower in the back than the front. This helps the material come out easier. Also makes digging easier not dragging the entire side of the bucket along the dirt.

No taper. I made this bucket as near a copy as I could to the Terex linked 'way back near the start of this thread. It looked a bit odd to me, too, but I took a leap of faith that they had excavating experience to back up the design. So far, it has been very nice to work with.

The pivot and the radius of the sides (and therefore, the bottom) make this thing just ease through material. It acts more like an ice cream scoop whereas the buckets I've used before act more like a tablespoon held backwards in your fist or a paddle.
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Offline Crusarius

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Re: backhoe from scratch and scrap
« Reply #225 on: September 07, 2017, 06:22:00 pm »
kool. glad to hear that.
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Offline Ox

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Re: backhoe from scratch and scrap
« Reply #226 on: September 08, 2017, 08:41:34 am »
The old backhoe I have here is a straight bucket.  It's basically the same shape as the one you made.  I wasn't even aware newer buckets were tapered... the longer I live the more I realize I don't know squat.

You did a real nice job making sure the hoe bucket was true.  Nice work.
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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

Offline grouch

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Re: backhoe from scratch and scrap
« Reply #227 on: September 08, 2017, 03:36:00 pm »
Bucket.


This is not a backhoe bucket. It is a Cellulosic Combustion Containment Unit.
Ok, it's a cobbled up wood burner made out of an old water tank for a well and some 3/8 inch rebar.


That hat is part of the backhoe bucket. There's a nice red glow in the mouth of the CCCU.


Persuaders. Laying that piece of railroad rail on its side provides a convenient place to hammer curves.


More curvature of the hat, more heat waves, more red.


Heat and hammer to taste. It's about done.


The carbon on the back won't hurt a thing. Curvature looks about right.


Curve ok; too wide.


That gap can be closed up during tacking.


Fits well enough on the right and bottom.


Needs to be cut to width.


Start where it fits and work to where it doesn't.


That's a fit.


That's not.


Transition from curved bottom to flat back.


Tacked where it fits.


Clamp advanced ahead of the tacks.


Eventually, you run out of things to clamp.


That's where it didn't fit before. Easier to pull it in to fit than push it out.

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Offline gww

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Re: backhoe from scratch and scrap
« Reply #228 on: September 08, 2017, 04:06:58 pm »
grouch
This project just amazes me.  I give you credit for even having the gumtion to even takle it.  Again, I am amazed.
Cheers
gww

Offline Magicman

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Re: backhoe from scratch and scrap
« Reply #229 on: September 08, 2017, 05:50:54 pm »
When I first saw the bucket I thought that you had gone to the junkyard with Kbeitz.   :)
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Offline Kbeitz

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Re: backhoe from scratch and scrap
« Reply #230 on: September 08, 2017, 06:02:40 pm »
I hate to say it nut there is a real nice bucket in the yard right now.
I forgot about it... My son is looking for one..
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Offline grouch

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Re: backhoe from scratch and scrap
« Reply #231 on: September 08, 2017, 06:12:42 pm »
gww,

Thanks! I'm just too hard-headed to not tackle it. Always wanted to build one and everything finally came together so I could.


Magicman,

Given the treasures he pulls out of that -magic- junkyard, that's a compliment. Could probably have found the whole DanG thing there, but then I wouldn't have had the fun of building it. Thanks! :)


Kbeitz,

Try looking under that bucket; the rest might still be attached. You're going to have to share that junkyard. It ain't fair you keep it to yourself.
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Offline Peter Drouin

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Re: backhoe from scratch and scrap
« Reply #232 on: September 08, 2017, 07:03:06 pm »
Coming along well, Nice job.
2008 LT40 super,2008 edger, Cat telahandler, JD 5410 And can cut up to 45' long
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Offline grouch

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Re: backhoe from scratch and scrap
« Reply #233 on: September 08, 2017, 09:02:07 pm »
Coming along well, Nice job.

Thank you. This is a (mostly) working machine now and all of this is a sort of flashback showing how it got to the point shown at the beginning of the thread. Had some help and advice on some hydraulic bugs back on page 1, I think.
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Offline grouch

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Re: backhoe from scratch and scrap
« Reply #234 on: September 13, 2017, 08:17:48 am »
Hurricane Irma acting like a geography blender just about made me forget my place in this. She's still unwinding, but done ripping and tearing.
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Offline grouch

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Re: backhoe from scratch and scrap
« Reply #235 on: September 13, 2017, 08:23:57 am »
Bucket.


There's one more piece of the puzzle to be fitted.


A little plasma trimming.








A cold glob at the start, crater at the end.




Outside all welded up.


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Offline grouch

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Re: backhoe from scratch and scrap
« Reply #236 on: September 13, 2017, 08:29:28 am »
Bucket.


Inside, after welding the outside.


Lots of rods, fumes and slag.








Fully welded inside and out.
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Offline Peter Drouin

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Re: backhoe from scratch and scrap
« Reply #237 on: September 14, 2017, 06:24:30 am »
Looking good.
2008 LT40 super,2008 edger, Cat telahandler, JD 5410 And can cut up to 45' long
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And a license NH soft wood grader.
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Offline Ox

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Re: backhoe from scratch and scrap
« Reply #238 on: September 14, 2017, 09:38:19 am »
I've never been able to leave a bead like that using an arc welder.  The whole project is pretty impressive using what you've got on hand and all.  Not many people could make something like that using what you did.  You should be proud of yourself about that.
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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

Offline Crusarius

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Re: backhoe from scratch and scrap
« Reply #239 on: September 14, 2017, 09:56:45 am »
You really got me wanting to pull my stick welder back out and see if I still have the skills :)
I knew what I thought I meant.