Backhoe thumb

   / Backhoe thumb #1  

Anonymous Poster

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Sep 27, 2005
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Well I finally finished my first time welding project and made a non-mechanical thumb for my JCB 1400B backhoe. /forums/images/graemlins/laugh.gif

Check out backhoe thumb for more info and some pictures of it in action.
 
   / Backhoe thumb
  • Thread Starter
#2  
Great job and great photos. I would use grade 8 bolts on the thumb. Grade 2 just doesn't have the strength and you'll be replacing them before long.
 
   / Backhoe thumb #3  
very nice job and STanley beat me to it!!!!!! Even grade 5 will be a big improvement over grade 2, 2 is just too soft for your use. /forums/images/graemlins/shocked.gif /forums/images/graemlins/shocked.gif
 
   / Backhoe thumb #5  
Nice Job. Wish I could weld I would have done mine myself. I had a Manual thumb put on my #48 hoe about a year ago, I'm in the process for making it Hydraulic and using a solenoid valve.
 
   / Backhoe thumb
  • Thread Starter
#6  
Please tell me more about making a thumb Hydraulic and using a solenoid valve, I may be interested in doing this to mine....that would make it very useful.

I upgraded to 1' thick grade 8 bolts after bending yet another grade 2 bolt /forums/images/graemlins/crazy.gif
 
   / Backhoe thumb #7  
Nice Job Luvmud!
Thank you for sharing the pictures. I may try making one myself and I agree that #2 bolts are a little soft or were you using that grade for a 'shear' bolt effect so as not to somehow damage hoe?
 
   / Backhoe thumb
  • Thread Starter
#8  
Thanks for the compliment. I used the #2 bolt as that is all the ole hardware store had and I thought its an inch thick no way I can bend this...DOH!!

I found a commercial grade hardware store and bought some nice Grade 8 bolts at $13 each...ouch...they should hold up fine /forums/images/graemlins/cool.gif
 
   / Backhoe thumb
  • Thread Starter
#9  
Keep posting on the hydralic thumb. I've started to gather materals and have a ROUGH plan.

Thanks
Mikell
 
   / Backhoe thumb #10  
What is it that you would like to know about the hydro thumb?
I chose the selenoid valve because of the ease of use, switch operated instead of lever. This way I can mount the switch on the dipper-stick lever just under where my hand would be and operate the thumb with my thumb /forums/images/graemlins/grin.gif Sometime in the near future I'm getting a new computer that will recognize my digital camera and I will post pictures.
 

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