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  #81  
Old 05-08-2013, 08:28 AM
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Default Re: PFB's Vario JD 850D

Nate,

Can you counterbore a hole in the brass part so the socket head sits down a bit? I assume that is the look you are not quite satisfied with?

Looks like a fun project!

Jim
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  #82  
Old 05-08-2013, 09:51 AM
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Default Re: PFB's Vario JD 850D

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Originally Posted by thuangs View Post
TIG result is quite promising. Mine is just arc welding, it is very hard to control arc. Are you using Agron or Co2? Does it worth the effort to upgrade to TIG?
Definitely. Much easier to control the heat to the workpiece.


I already fixed the screw side but thanks for the suggestions gents!
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  #83  
Old 05-08-2013, 09:57 AM
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Default Re: PFB's Vario JD 850D

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Originally Posted by pigeonfarmboy View Post
Definitely. Much easier to control the heat to the workpiece.


I already fixed the screw side but thanks for the suggestions gents!
I was just going to suggest that Looks good so far
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  #84  
Old 05-08-2013, 01:39 PM
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Default Re: PFB's Vario JD 850D

I have a question if you are into such a detailed model why didn't you use the same lock foe the pins that the real excavators use? Ed
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  #85  
Old 05-08-2013, 02:03 PM
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Default Re: PFB's Vario JD 850D

Much better!! Sometimes you just have to set back and think about things
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  #86  
Old 05-08-2013, 02:55 PM
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Default Re: PFB's Vario JD 850D

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I have a question if you are into such a detailed model why didn't you use the same lock foe the pins that the real excavators use? Ed
Show me a good reference photo and I'd be glad to. Here in cornland, there's not a need for such large equipment. Suppose I could go up to Moline and take some photos (if they even have them there)
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  #87  
Old 05-09-2013, 09:51 AM
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Default Re: PFB's Vario JD 850D

Moving right along. Edge welding is easy to screw up, looks like I've got the machine setup correct!

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  #88  
Old 05-09-2013, 11:00 AM
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Default Re: PFB's Vario JD 850D

To answer you about a picture I did not get one but I called the local Deere equipment dealer and they said that there is just a strap over the end of the pin with a bolt holding the strap on. Ed
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  #89  
Old 05-09-2013, 12:19 PM
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Default Re: PFB's Vario JD 850D

like this Nate ,

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  #90  
Old 05-09-2013, 08:16 PM
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Default Re: PFB's Vario JD 850D

Nate your welding on that bucket looks great. It takes lots of practice and usually many years to achieve the quality of weld you have there. Will definitely be waiting for the next pics of that bucket.

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  #91  
Old 06-15-2013, 10:34 PM
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Default Re: PFB's Vario JD 850D

Started on V2 of the dolly system today:

Nope, not a 4cyl. model engine


Just like the last version, I'm modifying an RCP Crawlers TLT Straight Axle adapter so I can service the outer section easily. This time it will mount cleaner to the frame via screws.


The axle housing will mount to the plate with counter-sunk screws and then the plate will bolt to the frame. Probably hex heads to make it look 1:1.


Bolted up to the wheel


Went with 2.2s this time. After looking at the video closer, the 1.9s were too small.


Who needs a laser/water jet? Bandsaw, grinder, and file son! (Except for that whole need to make 3 more part )
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  #92  
Old 06-16-2013, 05:41 AM
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Default Re: PFB's Vario JD 850D

looking good Nate.
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  #93  
Old 06-16-2013, 10:39 PM
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Default Re: PFB's Vario JD 850D

Nice machining! Is the frame of the dolly CNC machined or cut with a bandsaw and polished on the edges? What kind of mill do you have?
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  #94  
Old 06-17-2013, 04:38 PM
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Default Re: PFB's Vario JD 850D

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Originally Posted by Espeefan View Post
Nice machining! Is the frame of the dolly CNC machined or cut with a bandsaw and polished on the edges? What kind of mill do you have?
First piece pictured is bandsaw/grinder/belt sander/filed. I cheated on the next three and used the plasma torch. All of them are cut and finished. Just need to weld standoffs in place to get the 2.5" spacing. Going to figure out a different method for tire support this time. I like RCP's idea with his Kenworth tire inserts. Wrapping around like I did last time definitely made a small bump in the tire.
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  #95  
Old 08-06-2013, 10:51 PM
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Default Re: PFB's Vario JD 850D

New swing motor/gearbox installed and body cover done.
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  #96  
Old 08-19-2013, 12:30 AM
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Default Re: PFB's Vario JD 850D

Got the new dollies finished up. I lost track of how much time I have in these. Well over 20-30 hours. The first versions I didn't spend as much time in the preplanning as I did on these. The fit on this pair are **** near perfect and look much better on the excavator with the 2.2 wheels/tires. (Sorry I didn't get more photos of the build process. I'm in Indy rush mode to get everything done before the show)

Milled slots in the bottom of the uprights and dropped in and tig welded the rods in place. Used some plates to keep the uprights spaced correctly while in the vise.


Next was cutting new inserts for the tires to support the weight of the 850D. This dense foam stacked inside the tire should do the trick. That's a special tool made by Olfa for cutting out lexan body wheel wells.


All the foam cutout it's time to assemble the beadlocks.


All assembled and painted up. Wheels will be painted black or grey another time.


Also got the new buckets welded up and ready for paint tomorrow.
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  #97  
Old 08-19-2013, 01:37 AM
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Default Re: PFB's Vario JD 850D

Wow, those buckets and the dollies turned out beautiful. I'm not a professional welder, but your welds look really good. Nice work.
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  #98  
Old 08-19-2013, 02:51 AM
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Default Re: PFB's Vario JD 850D

The buckets look great...

On the mounts, are they just tacked on? ... Sorry the engineer in me just had to comment. :-)
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  #99  
Old 08-19-2013, 10:52 AM
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Default Re: PFB's Vario JD 850D

Yup just tacked. I ran out of tig gas so after the photo I went over to the mig to finish it up.
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  #100  
Old 08-20-2013, 12:16 AM
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Default Re: PFB's Vario JD 850D

Can you see the tungsten contamination spots? I sure as ____ can!



Got some inserts made on the lathe too. Still gotta make the other 4.
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