Backhoe Ripper tooth design - need your advice

[wedge40]

I have to ask, how much does the "Stump Slayer" weigh and how easy was to install?

Wedge

 

[bluehog]

I have to ask, how much does the "Stump Slayer" weigh and how easy was to install?

Wedge

It tips the scales at 101 lbs. Loading it was not to bad as I had made a tapered pin that is 11.5" long. The pin has a 7 degree taper (per side) on the first 3.0" then it's the full pin diameter of 1.25". I extended the boom and dipper to the ground and positioned the ripper on a dolly with the point down and away. I lubed the pin bores with grease and used the taper pin to align the hole of the ripper with the dipper hole and wiggled the pin up, down & sideways until it went in full length (taper is now sticking out the opposite side. At this point I had two options... raise the dipper and boom to hang the ripper from the tapered pin and then pivot it on that pin to align the bucket open/close brackets or just lift the boom a little and align them while on the dolly. I tried the second method first and the bucket pin went right in... I got lucky I think! I rotated the pin for the locking bolt and pushed that in place. Then I used the second bucket pin to push the tapered pin out the opposite side. I did use a few taps with a dead-blow hammer to push the tapered pin out but nothing forceful. I then oriented the locking bolt hole and put that bolt in. Used the grease gun to lube the bucket pins well and tightened down the lock nuts. The tapered pin I think is the key.

 

[jcfcamaro]

So , How much did you have in it $$$$ ??? . Who made the thumb thats on your backhoe ? and what did that cost ??

 

[Coyote machine]

So , How much did you have in it $$$$ ??? . Who made the thumb thats on your backhoe ? and what did that cost ??

I think he's got a BroTek thumb:http://www.google.com/imgres?imgurl...&sa=X&ei=L6RiUpbEB4ic9gSC6IEg&ved=0CDsQ9QEwAw

 

[yoann]

Your design look very nice. What kind of software are u using to drawn that nice part. For myself, I'm using Autodesk inventor. Are you open to put .stp or iges part on the forum.

Thanks and good job

 

[wedge40]

Bubble up.
Waiting to see photos of this thing in action.

Wedge

 

[bluehog]

So , How much did you have in it $$$$ ???

Total cost of materials and supplies was around $300... but the labor would be the real killer. I had help from several close work friends that offered their assistance in this project which I can not put a price on what they did for me. Having use of my employers equipment is another huge factor that cannot be overlooked!

I have to put a plug in for what MIE offers... their product has a proven record from several on this forum. Their offer is an INCREDIBLE deal to anyone that does not have the access to all the things I listed above. In fact I planned on buying from them even though I had access to this equipment. I am not sure what their current final costs is now, but it was mid-$600's delivered a couple years ago. Indeed I did mimic their (IslandTractor & MIE) design... I won't say that I copied it as that would mean I had one in front of me to touch, feel & measure. I do greatly appreciate the assistance that I received from everyone on this forum and from my coworkers & my employer.

Who made the thumb thats on your backhoe ? and what did that cost ??

Coyote Machine is correct... it is/was a Bro-Tek. What I mean is I had to modify it... not so much the design but the hardware. The supplied support top-link was a thinwall design that collapsed on me when I put a little more bucket pressure on in that I probably should have. This caused much grief for me as I was 100 miles from a real hardware store and then they probably would not have had the parts I needed anyway. I had to make-shift a brace support with a large crescent wrench. I ordered from www.agrisupply.com the following which has held up great 11911 TOP LINK 15" LNG (381MM) H. DUTY CAT 2 = $25 got a spare as well.

Then a few trips later, one of the 4 bolts that hold the frame brackets to the dipper broke. Once again I was a long ways away from a hardware store so I used a long 3/8 socket extension to support the braces where the bolt broke. It of course bent as well but I was able to finish my trip without further time loss. The bolts provided were 1/2" grade 8 (quality stuff) but I choose to upgrade those to 5/8" size with a softer grade 5 bolt to flex a little if I got a little aggressive with it. The Bro-Tek design works well but you do have to remove the support top-link and a spacer when you want the thumb in the collapsed position. I just carry the removed parts behind my tractor seat... but it something that I wish could just be mounted somewhere on the thumb. I liked the narrow width of the thumb support with the "hardfacing" already applied rather than the wider styles that are more readily available online. It has worked very well for me since the upgrade to a heavy-duty top-link and the 5/8" bolts. Cost was a bit over $400 delivered from Canada a couple years ago. http://www.bro-tek.biz/

 

[bluehog]

Your design look very nice. What kind of software are u using to drawn that nice part. For myself, I'm using Autodesk inventor. Are you open to put .stp or iges part on the forum.

Thanks and good job

The software I used was Google SketchUp V7 this was recommended to me for ease of use. Indeed it was nice to model with but it does not have converters for the .iges file type , at ;east the free version that I was using. I did find a converter for the .dxf and used that to import my model for the waterjet machine to cut the parts out of plate stock. If this is of help I will post it.

 

[bluehog]

Just to let you all know I am back from my trial week with the "Stump Slayer"... all went well and accomplished my goals. :cool2: I will get some pics up in a couple days, I haven't even had time to look at them myself! Here are a few previews

 

[wedge40]

Thanks for the update BH.

Wedge