Re: CAT 374D L
 

Ari, nice looking cylinders. Du you solder the ends or are they glued to the tubing?
What pressure will you use in the system?
Dan

Re: CAT 374D L
 

The pressure will probably be 20 bar or more, depending when my cylinders start to leak:o
Cylinders will be silver brazed, here's one that's been brazed:

http://i327.photobucket.com/albums/k...L/IMG_0737.jpg

Re: CAT 374D L
 

wow you just keep out doing your self. what will hold the stick cylinder on a snap ring on the out side? are the bolts for the hose adapters end real or just on there and brazed on? thanks for showing us your work.

Re: CAT 374D L
 

So what's the bore of the cyls and what size (ID) plumbing do you intend to use?

Re: CAT 374D L
 

The stick cylinder and all the others will be attach with flanged pins that are bolted to stick.
Those M1.2 bolts are just for decoration, those hose adapters are brazed.

Re: CAT 374D L
 

Cylinder bore is 18 mm and hose ID is 3 mm.

Re: CAT 374D L
 

Made some plumbing today:)

http://i327.photobucket.com/albums/k...L/IMG_0766.jpg

http://i327.photobucket.com/albums/k...L/IMG_0761.jpg

Re: CAT 374D L
 

Very neat!


What do you use for brazing?

Re: CAT 374D L
 

Mostly silver.

Re: CAT 374D L
 

That brass and soldering work is phenominal!!! I sure wish I could solder that clean in that small of a fitting with brass. Can't wait to see this machine operating.

Keep it up.

Tyler

Re: CAT 374D L
 

Ari every time I look at this thread my Jaw drops ..You are really setting the Bar really high now ..Hats off so far a perfect peice of art

Re: CAT 374D L
 

Got the boom boxed, and cylinders finished. Now I should get my hydraulic pump up and running to see if there's any leaks on the cylinder tubing.

http://i327.photobucket.com/albums/k...L/IMG_0782.jpg

http://i327.photobucket.com/albums/k...L/IMG_0786.jpg

http://i327.photobucket.com/albums/k...L/IMG_0785.jpg

http://i327.photobucket.com/albums/k...L/IMG_0784.jpg

http://i327.photobucket.com/albums/k...L/IMG_0791.jpg

http://i327.photobucket.com/albums/k...L/IMG_0792.jpg

Re: CAT 374D L
 

Stunning!! Cant say more then that it looks fantastic, great job on the cylinders, hope they are leak free! :)

Re: CAT 374D L
 

Beautiful job Ari! I'm sure that with your skills there will be no leaks:).

Re: CAT 374D L
 

I machined the tracks narrower, they are now 72 mm wide which is around 1 meter wide in full scale.
For my eyes they look more realistic now.
Here's a picture of the left track still wide.


http://i327.photobucket.com/albums/k...L/IMG_0801.jpg

Re: CAT 374D L
 

Spot on! That looks so much better!

Re: CAT 374D L
 

Here's both tracks done :)

http://i327.photobucket.com/albums/k...L/IMG_0812.jpg

Re: CAT 374D L
 

looks great hemi loving the detail ur putting into it

Re: CAT 374D L
 

Ari, looks better with the narrower tracks, the bigger machine, the narrower tracks it looks like.
This pic from a Swedish forum
http://i1014.photobucket.com/albums/...len/374D-4.jpg

What size is the L-connector on right side, M5?

http://i327.photobucket.com/albums/k...L/IMG_0791.jpg

Like your small connections (brazed) to cylinders, wish I had thought a little more about how to make those earlier. What´s the size of cylinders (good to know if I will build another hydaulic model, easier to find brass tubings).
Dan

Re: CAT 374D L
 

nice work
i would like to have more information on how did you do the track pad
Steve

Re: CAT 374D L
 

Man thats looking killer!!! One of the best ive seen!! Keep up the awesome work!

Re: CAT 374D L
 

Yes, those are M5

ID is 18 mm.

Re: CAT 374D L
 

That's a really super job you've done on this model. It's almost a shame to put it in the dirt...

Re: CAT 374D L
 

Did read thru whole tread again, had missed that some pic was a video. Realy liked those showing how your mill is working. Trying to learn as much as possible about this before deciding what to buy.
The bucket is impressive with all those extra parts. Looks from pic that you use aluminum EN755, is that the best for milling? Have found a local supplier where I live, hope that it´s possible to buy shorter pieces than 6m. Will do the shoes for keeping track right in alu.
Looking forward to more milling videos!
Dan

Re: CAT 374D L
 

I attached the swing motor and the worm gear assembly:)

http://i327.photobucket.com/albums/k...L/IMG_0817.jpg

Re: CAT 374D L
 

I made some upper structure parts:)

http://i327.photobucket.com/albums/k...L/IMG_0825.jpg

http://i327.photobucket.com/albums/k...L/IMG_0819.jpg

Re: CAT 374D L
 

Nice work as usual Ari ! I haven't bee paying attention lately on your build. I refreshed my memory and looked back and see you did narrow the track pads. By the way; The plumbing on your cylinders is outstanding.

Re: CAT 374D L
 

Wow. It's been a while since I checked out this thread! Amazing progress and workmanship. It's a beautiful model already, even in a half completed state. Incredible. Some people just have greater brain power then others, I am sure. You are very talented!

Re: CAT 374D L
 

Great job so far Ari . ? , Did you use a spring type tube bender or something else ? I'm looking around for something .

Re: CAT 374D L
 

I use this Robbe made tube bender: http://www.hobbydirekt.de/product_in...ucts_id=159332

Re: CAT 374D L
 

that's a nice 1 :)

Re: CAT 374D L
 

WOW Ari
When I look at your builds it is hard to believe, you do great work... Keep the photo's and information coming.

WELL DONE ! !

greg

Re: CAT 374D L
 

Been working on the counter weight, so many different corners...:mad::mad:

http://i327.photobucket.com/albums/k...L/IMG_0841.jpg

http://i327.photobucket.com/albums/k...L/IMG_0839.jpg

Re: CAT 374D L
 

Here's how I made the side steps:)

http://i327.photobucket.com/albums/k...L/IMG_0860.jpg

http://i327.photobucket.com/albums/k...L/IMG_0862.jpg

http://i327.photobucket.com/albums/k...L/IMG_0864.jpg

http://i327.photobucket.com/albums/k...L/IMG_0868.jpg

Re: CAT 374D L
 

Nice steps. When cutting the bending lines, how deep do you go? 1/2 thickness?
Dan

Re: CAT 374D L
 

Yes, about half way.

Re: CAT 374D L
 

I've been working on the upper body frame structure and now it's at the stage that I should start making the body panels:)

http://i327.photobucket.com/albums/k...L/IMG_0869.jpg

http://i327.photobucket.com/albums/k...L/IMG_0874.jpg

http://i327.photobucket.com/albums/k...L/IMG_0891.jpg

http://i327.photobucket.com/albums/k...L/IMG_0882.jpg

http://i327.photobucket.com/albums/k...L/IMG_0894.jpg

Re: CAT 374D L
 

The alu-master himself! :) Looks amazing Ari!

Re: CAT 374D L
 

It's just amazing what you can build! Are you basing some of your dimensions off the smaller diecast mode, sitting next to the big model? I like how you make your steps. Maybe that is something I can try sometime. What kind of endmill do you use to cut the relief for the bends? Is it just a small square edged endmill?

Re: CAT 374D L
 

I use that Norscot diecast model to take some measurements, they are actually pretty accurate.
For the relief grooves I use this tool:
http://www.cut-tools.de/cnc8fold-tool-p-3805.html

I got some body panels done today:)

http://i327.photobucket.com/albums/k...L/IMG_0901.jpg

http://i327.photobucket.com/albums/k...L/IMG_0915.jpg