CDP MID600 "backhoe build" project

   / CDP MID600 "backhoe build" project #1  

Dongerosa

Bronze Member
Joined
Jan 1, 2008
Messages
87
Location
wellington ohio
Tractor
7510 bota...RTV 900
Getting back on my "backhoe build" project that started in Feb. 2004 :eek: for a BX Bota, now it's going on a B7510...think it's about time to get'erdone! looking through all my notes and instructions got a few questions. :confused:

being new to all this stuff...and spent way too many hours on this site lurking at hoe threads...3pt attachment issues...sub-frame builds. So, building a sub-frame for my 3pt designed hoe, finally got the design that I think will work with the metal i got in my shop.

#1. it states to use JIC#6 hoses, now looking at Surplus Center they have two hose sizes, 1/4 or 3/8 dia. I'm thinking with the 2" cylinders and a 5 GPM pump the 1/4" should be fine. my thinking correct?

#2. never used a backhoe before...So, what would be the best/most used pattern for controls to learn on....ISO or SAE or other?

Great Site!

:D
 
Last edited:
   / CDP MID600 "backhoe build" project #2  
3/8 would be better. My yanmar uses 3/8 on almost everything. The 1/4 is very small for the flow.
 
   / CDP MID600 "backhoe build" project #4  
invalid attachment :(
 
   / CDP MID600 "backhoe build" project
  • Thread Starter
#6  
An project up date...got the sub frame done...a few, self created, issues with the front mounting, but is done now! bolts on the the front two 5/8 dia. on each side...the rear has 1 inch stubs that fit into axle brkts.
20130118152050 subframe 2.jpg

next step...weld hoe base to the sub-frame.

Pic of all the parts....
20130121165629 all parts on floor.jpg
 
   / CDP MID600 "backhoe build" project #7  
My BH77 on my B3300SU uses ISO pattern (along with every other backhoe/excavator I've run). It also uses 3/8 lines as the main pressure and return to the BH valve with 1/4" lines to the cylinders.
 
   / CDP MID600 "backhoe build" project
  • Thread Starter
#8  
My BH77 on my B3300SU uses ISO pattern (along with every other backhoe/excavator I've run). It also uses 3/8 lines as the main pressure and return to the BH valve with 1/4" lines to the cylinders.

Thks for the ISO and line size feedback.

made a little more progress in the garage...

20130125163351 bucket on dipper arm.jpg
 
   / CDP MID600 "backhoe build" project
  • Thread Starter
#9  
a few more pictures...

arm mock-up

20130126173546 hoe arm mockup.jpg

stabilizers with center section...

20130126120022 stabilizer arm with center.jpg

starting to look like a backhoe....:cool2:
 
   / CDP MID600 "backhoe build" project #10  
Looks great ! I like that the pieces have the modern style as see on a commercial backhoe unit.

You mention CDP so I assume either the pivot weldments were bought from them or cut to their template, I just find it odd that the ends of the pivot weldments are straight were the get welded to the tubes. I was always taught that you should never weld straight across a boom or arm on ground engaging equipment, commercial machines like Case or Deere go to extremes to eliminate straight welds on their hoes and front loader arms. I realize this is a much lower stress application , it's just that CDP seems to have done a good deal of engineering on this and I'm surprised they left it out.

Picture for clarity of what I'm talking about: hoe arm mockup.jpg


Ray
 

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