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  1. #1
    Elite Member
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    Jul 2006
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    2,926
    Location
    Meridian Idaho
    Tractor
    Kubota B7100D

    Default smaller backhoe bucket

    My kubota b7100 came with a b670 which had a 16" bucket. I have a fair amount of sprinkler line to put in and I decided to make a smaller bucket. I read some of the posts on here concerning dirt sticking in the smaller buckets but we don't have clay so I think it will be OK. Also, I could just rent a trencher but what fun is that?

    I made templates from my original bucket, here are the materials, one bucket side already cut out:

    bucket01.jpg

    I used the pieces for the 'ears' to help make the 90 angle that is at the back/bottom of the bucket.

    bucket02.jpg

    Both sides now cut out, bottom bent, 'ears' made. I cut the sides with some Harbor Freight metal cut off wheels in my angle grinder. Worked pretty well and used about 1.5 of them

    bucket03.jpg

    The original bucket and one pin had a wee bit of wear so I made a new pin. I thought about reworking the bucket to use collars on the ears and longer pins. I figured if this is what 30 years of use does the original design would probably work for me The holes in the original bucket were out of round about 1/4 inch on one side, some quick work with the welder and they were close to new.

    bucket04.jpg

    Everything tacked together for a test fit on the tractor. It fit perfectly.

    bucket05.jpg

    A lot of welding later and some wishing for a MIG the bucket is now ready for bending/welding of the bottom.

    bucket06.jpg

    I still need to get the cutting edge material and some teeth. Without those two items I have about $42 in materials which includes the new pin. I think I have spent about 8 hours on it so far. Mostly checking and rechecking the pin hole locations before drilling

    I'll post some pics after I finish it.

  2. #2
    Elite Member sandman2234's Avatar
    Join Date
    Dec 2005
    Posts
    4,097
    Location
    Jacksonville, Florida
    Tractor
    JD2555

    Default Re: smaller backhoe bucket

    Nice job!
    A lot better than the last bucket I made, which was 42" wide for my boom mower. I just posted a picture from that. I used a piece of 1/2" flat bar for my cutting edge, cut at a 45 degree angle with a milling machine. I knew I wasn't going to be using it for digging but needed something to stiffen the long edge of the bucket. I figured a piece of 1/2 x 6 would stiffen up the edge, which it did.
    How many teeth do you need, two or three? Does anyone make them that will adapt to your new bucket?
    David from jax
    A serious accident is one that money won't fix.

  3. #3
    Gold Member gunmaker's Avatar
    Join Date
    Apr 2006
    Posts
    286
    Location
    nw nj
    Tractor
    jd 425 / jd 2520

    Default Re: smaller backhoe bucket

    Excellent work! How about some dimensions, steel thickness, type. This looks like a good spring project for my electric lines. Craig
    2520 w/200cx & JD 61"bucket/toothbar-46 backhoe-54" plow-Woods RB60/84-Woods LR72-Meyers 6ft plow w/JD Quick-Tatch
    425 w/54"mmm-54"plow

  4. #4
    Gold Member digger2's Avatar
    Join Date
    Dec 2006
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    265
    Location
    n.e. pa.(lycoming co.)
    Tractor
    kubota B26 TLB,former B7610 owner

    Default Re: smaller backhoe bucket

    Great idea,my last hoe had a 12" bucket and i can already see i'll miss it at times.My new hoe came standard with a 18" and i also was thinking about making a 12" out of some 1/4" steel.I have to study mine a little more as its a quick disconnect and i have to figure it all out first.I think with enough time and determination i can do it,whenever i run out of other stuff to do.
    Looks good so far.Make sure you send those pictures in to show us your progress!!!!!What material did you make your new pin out of ??
    digger2

  5. #5
    Super Member 3RRL's Avatar
    Join Date
    Oct 2005
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    6,808
    Location
    Foothills of the Giant Sequoia's, California
    Tractor
    55HP 4WD KAMA 554 and 4 x 4 Jinma 284

    Default Re: smaller backhoe bucket

    What a great project.
    I love that you are doing it all from scratch like that. I bought a smaller bucket and it set me back over $600 bucks not including shipping! Not only that, but the bushing holes did not line up perfectly so I had to ream them out to fit. I should've made my own like you are doing.
    The smaller 12" bucket made a big difference not only for narrower ditches, but also in the digging power. I use it when digging up trees and tearing through roots too.
    Rob-
    ...The Older I get...the Better I Used to be...
    Member of the Month

  6. #6
    Veteran Member MJPetersen's Avatar
    Join Date
    Feb 2007
    Posts
    1,255
    Location
    Warsaw, Poland
    Tractor
    YM 1510-D

    Default Re: smaller backhoe bucket

    Indeed!! Great work! The narrow bucket will allow your hoe force to be more concentrated. What kind of soil do you have there? Sandy? A narrow buck sometimes also has problems with larger rocks, if that is on the menu. Great craftsmanship. Looking forward to seeing it dig.

    Mike
    "In all your ways acknowledge Him and He will direct your paths." Solomon
    YM1510D, YM 1202 tiller, The following home made tools: Quick Hitch, KK copy dirt scoop, imitation Gannon rollover box blade, Forks on 3pt, a Rear Blade with gauge wheels and a 1.5 yd dump trailer.

  7. #7
    Elite Member
    Join Date
    Jul 2006
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    2,926
    Location
    Meridian Idaho
    Tractor
    Kubota B7100D

    Default Re: smaller backhoe bucket

    Thanks for the comments! The new bucket will be about 9 inches from cutting edge to cutting edge. The bottom/inside is 8".

    The original bucket is made out of surprisingly (I thought) light materials. The sides and bottom are 1/8 inch plate, the ears are 3/8 plate and for the angle bracket across the back I used 2x2 by 3/16. I couldn't find any references as to these parts being made out of anything other than mild steel so that is what I used. The cutting edge wraps around a little on the sides and ties the whole thing together.

    I used a local place that is one of the Metal Supermarkets stores. They cut everything to the right length etc. with only one $5 shearing charge. Obviously your mileage will vary based on your particular hoe but here was my cut sheet:

    (2) 1/8" plate 10"x14" (had to be sheared out of a sheet)
    (2) 3"x3/8" bar 9" long (something was a little off with my measurements.. probably really needed 4"x3/8" but I made it work)
    (1) 2"x2"x3/16 angle 5-1/2 inches long
    (2) 2"x2"x3/16 angle 3/4" long
    (1)1/8"x8"plate 25" long (need more like 24" but I wanted some room if my bend ended up wrong or I measured wrong... it's easy to cut off)

    (1) 1"x7-3/8" 4130 round bar for the pin.

    I still need to order the cutting edge which I think I will get from discountsteel.com and the bucket teeth. I am looking to put 3 teeth on it. I posted another thread looking for input on teeth. I think I can get what I need off ebay for a lot less than what kubota wants for the teeth on the original bucket.

    Charles

  8. #8
    Elite Member
    Join Date
    Jul 2006
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    2,926
    Location
    Meridian Idaho
    Tractor
    Kubota B7100D

    Default Re: smaller backhoe bucket

    Quote Originally Posted by MJPetersen
    Indeed!! Great work! The narrow bucket will allow your hoe force to be more concentrated. What kind of soil do you have there? Sandy? A narrow buck sometimes also has problems with larger rocks, if that is on the menu. Great craftsmanship. Looking forward to seeing it dig.

    Mike

    Our soil is mostly loam down to about 3' where there is a really hard old clay layer. Not many rocks, most are fist or double-fist sized with the largest well under head sized. That old clay layer is tough going with my 16" bucket and probably would be a lot easier with a smaller bucket. I don't need to go that deep though for what I want to use this bucket for (irrigation lines).

    Charles

  9. #9
    Elite Member
    Join Date
    Jul 2006
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    2,926
    Location
    Meridian Idaho
    Tractor
    Kubota B7100D

    Default Re: smaller backhoe bucket

    Had a chance to work on this some more today.

    I thought I would give bar clamps a try to bend the bottom to fit. I drew a line on the inside of both sides as to where the top of the plate should be. On the big bucket the sides extend past the bottom about 1/4 inch. Sorry its at bit out of focus, didn't realize that until I downloaded the camera. The alternate method was going to be to mount the bucket on the hoe and then use the hydraulics to press it against the ground and bend the plate. With the clamps I didn't have to crawl around on the ground
    bucket07.jpg

    Worked the clamps alternating sides... it was tough going sometimes. I tacked at little more than one inch intervals. When I got to the end I couldn't get it to bend in much. Looking at the big bucket I realized the end slowly tapered out until the bottom was flush with the edge of the sides. Makes sense as the cutting edge sits on both and is welded to them. Bending it in that much was easy.

    bucket08.jpg

    Went back and slowly welded all the spots between the tacks.... Hard to weld inside the bucket but I did manage to duplicate some of the not-so-hot-looking welds on my original bucket Notice the extra 1" of material I added to the bottom plate is there at the end... looks like I didn't need it after all. I will wait to cut it off until I have the cutting edge in hand.

    bucket09.jpg


    Here is a pic of the new bucket next to the 16" I am using as a template.
    bucket10.jpg

    Looks like I have better get on the stick and order the cutting edge and find some teeth!

    Charles

  10. #10
    Platinum Member bx24's Avatar
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    Jan 2006
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    663
    Location
    Indiana

    Default Re: smaller backhoe bucket

    Great looking work. There are lots of places to get the teeth as well as the cutting edge. I have never priced lengths of cutting edge, but I wonder if using plow shares (~$14 or so for 16" length) would work.

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