Grapple

   / Grapple #21  
Man that's one good looking grapple. Good job.
 
   / Grapple #24  
Ditto. Looks good!

I have a question re the fingers you had cut for you..... They
look like 1/2". Is that right? You said a friend cut them with
a plasma cutter. Was it a production under-water machine or?
Did you shop around for cutting services and get quotations?
I want to have 8 or 10 similar fingers cut and I am wondering
what the most economical way would be. I have a PC, but
cutting 1/2" is slow. There are lots of shops I could go to, but
I think it would only be economical if they have production
equipment (plasma, laser, water).
 
   / Grapple
  • Thread Starter
#25  
I didn't shop around for cutting cause my buddy offered to do it for nothing. As for plasma cutter I'd have to ask what kind it is, I do know it dosn't use water? The arms aren't 1/2, they are 3/8 as I was trying to keep weight down. The only things 1/2 are pin brackets and the 2 cross braces, everything else is 3/8. Like I said I have a tendency to overkill.
 
   / Grapple #26  
Looks great. Gusseted like that you probably could have gotten away with 1/4" throughout. Look forward to seeing it installed with Hydraulics(I need to build one for my fork bucket:)

Dfkrug: As for cutting services, If you can find someplace that does water jet cutting you will probably be better off. In my experience, a large part of the cost is the setup time for a one-off job at a production shop. I have done a few projects that needed parts cut and if you can bring the cutter a .DXF file from a CAD program(another reason i started using CAD), you will be miles ahead on setup costs. Even better than that is a .DXF file with all the pieces already layed out on the smallest area. My setup times usually consisted of a few questions reguarding tollerances on the holes I specified on my parts. My .DXF file on a disk went into their computer for a a little automated conversion and they clamped the appropriate sized plate in the machine and pressed start. The last turbocharger manifold I built had a 1/2" plate flange where it bolted to the cylinder head and the waterjet process yielded a finished plate that needed no further work except to start welding on the rest of the structure parts(also water jet cut).
 
   / Grapple #27  
How did you bend the gussets? Or, do they only appear bent in the pics...

Great job!
 
   / Grapple #31  
Don't know how I missed this great looking project but since another member brought it to the top of the pile I do want to comment.

Your work to this point looks great. You were wise in making your gussets go clear to the tips of the lift arms. You will be surprised at just how much hydraulic force that you'll be able to exert with the grapple once finished and the gussets will help prevent the tips of the arms from any flexing. The grease zerks are a bit of overkill but certainly a nice touch nevertheless. I've found that once the pins are greased they need very little additional grease beyond that point.

You're on a roll Moemoe, please post more pictures as you make more progress.
 
   / Grapple #32  
Don't know how I missed this great looking project but since another member brought it to the top of the pile I do want to comment.

Your work to this point looks great. You were wise in making your gussets go clear to the tips of the lift arms. You will be surprised at just how much hydraulic force that you'll be able to exert with the grapple once finished and the gussets will help prevent the tips of the arms from any flexing. The grease zerks are a bit of overkill but certainly a nice touch nevertheless. I've found that once the pins are greased they need very little additional grease beyond that point.

You're on a roll Moemoe, please post more pictures as you make more progress.
 
   / Grapple
  • Thread Starter
#33  
Finally finished my grapple project. Thanks to all members here who's minds I picked and to some who's ideas I used. Grapple painted and ready to install
 

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   / Grapple
  • Thread Starter
#34  
Finally finished my grapple project. Thanks to all members here who's minds I picked and to some who's ideas I used. Grapple painted and ready to install
 
   / Grapple
  • Thread Starter
#35  
Mount installed on Bucket.
 

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   / Grapple
  • Thread Starter
#37  
Bracket for ram welded on
 

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   / Grapple
  • Thread Starter
#39  
Bracket on grapple welded on
 

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