Re: CAT 374D L
 

Looks great, nice work as always!

Re: CAT 374D L
 

Very nice parts, Ari! The pace of your build is amazing.

Stefan

Re: CAT 374D L
 

Wow,coming along nicely. The wear plates and teeth on the bucket turned out very nice.

Re: CAT 374D L
 

You do fantastic work! The bucket looks incredible.

Re: CAT 374D L
 

Got the chain drive housing done :)

http://i327.photobucket.com/albums/k...L/IMG_0286.jpg

http://i327.photobucket.com/albums/k...L/IMG_0280.jpg

http://i327.photobucket.com/albums/k...L/IMG_0275.jpg

Re: CAT 374D L
 

Where did you get that chain from?

Great job man, very tight fit there :o

Re: CAT 374D L
 

chain and sprockets are from here: http://www.conrad.com/Chain.htm?webs...167&ireusocl=1

Re: CAT 374D L
 

So clean, will look great assambled!

Re: CAT 374D L
 

Another fine job you are doing there........Conrad has alot of nice building stuff, but they dont ship to the U.S. of A

Re: CAT 374D L
 

Impressing as always! But it looks like you let the chain actually slide against the housing walls? Never seen that before. Don´t you think that will create noise and an aluminum slurry?

Re: CAT 374D L
 

Yep, your right about that Stefan. Due a small design error:mad: I made the housing little too small, but it doesn't keep any noise and hopefully with some grease inside it don't eat it self thru the housing:)

Re: CAT 374D L
 

I see, its a bug and not a feature :D Well, in any case, the chain plates might dig in a millimeter or so (actually half a millimeter if you have the 6 mm pitched chains), but then the rollers start rolling on the land between the grooves and the wear rate should decrease.

Re: CAT 374D L
 

Some progress with the undercarriage. The drive end is pretty much done but the front idler still needs to be done.

http://i327.photobucket.com/albums/k...L/IMG_0300.jpg

http://i327.photobucket.com/albums/k...L/IMG_0303.jpg

http://i327.photobucket.com/albums/k...L/IMG_0306.jpg

http://i327.photobucket.com/albums/k...L/IMG_0312.jpg

http://i327.photobucket.com/albums/k...h_MVI_0302.jpg

Re: CAT 374D L
 

Sweet! You'll be digging in no time!

Re: CAT 374D L
 

WOW awesome work!

Re: CAT 374D L
 

Great work! Really impressive!

Do you have any more pictures of that motor cover or whatever is that called? You bent that radius or milled?

Re: CAT 374D L
 

That's actually a U-profile that's machined that way.

Got the idler wheel and track tension mechanism done:)

http://i327.photobucket.com/albums/k...L/IMG_0326.jpg

http://i327.photobucket.com/albums/k...L/IMG_0320.jpg

http://i327.photobucket.com/albums/k...L/IMG_0317.jpg

Re: CAT 374D L
 

Some progress:)

http://i327.photobucket.com/albums/k...L/IMG_0354.jpg

http://i327.photobucket.com/albums/k...L/IMG_0341.jpg

http://i327.photobucket.com/albums/k...L/IMG_0344.jpg

Re: CAT 374D L
 

Lookin good Ari, at the rate you're going you'll have this done in a couple months.:cool:

Reg

Re: CAT 374D L
 

Hi Ari

Great work and it is giving us all ideas.
Keep the update coming and thanks for sharing.

Regards

Mark

Re: CAT 374D L
 

I started to make the lower carrier rollers. First I made the brackets (32 pcs) and now I should made the rollers (16 pcs) I wish I had a cnc lathe;)

http://i327.photobucket.com/albums/k...L/IMG_0384.jpg

http://i327.photobucket.com/albums/k...L/IMG_0375.jpg

http://i327.photobucket.com/albums/k...L/IMG_0380.jpg

http://i327.photobucket.com/albums/k...L/IMG_0378.jpg

Re: CAT 374D L
 

Are you making these rollers with mill or lathe? I know that feeling when you have to make manually same thing for numerous times. I once drilled manually over 1500 holes...


But the build is still very cool and yet fast.

What size screws are you using there?

Re: CAT 374D L
 

Madda, those rollers will be made with lathe.
The screws are M2 steel ones. It was a quite job to make threads for all the 64 holes with three separate taps:eek:. The 2 mm tap doesn't take much to brake.

Re: CAT 374D L
 

Finally got all of the carrier rollers done including the upper ones:)

http://i327.photobucket.com/albums/k...L/IMG_0391.jpg

http://i327.photobucket.com/albums/k...L/IMG_0397.jpg

http://i327.photobucket.com/albums/k...L/IMG_0401.jpg

Re: CAT 374D L
 

Hemmi1966,

A beautiful project, congratulations!!

You're doing all of it aluminum?

Thank you,

Carlos

Re: CAT 374D L
 

Pretty much yes, of course all axles and pins are steel. Also the upper frame swing bearing mechanism will be made out of steel. There will also be some brass parts in the upper frame.

Re: CAT 374D L
 

This is one awesome build, Ari. :eek: It's going to be heavy and durable in the end. :p

Great work. Another beautiful job. :D:D

- RCT

Re: CAT 374D L
 

Wow, looks amazing, always a plasure to watch your updates!

Re: CAT 374D L
 

Hi

Most excelent work realy look forwards to your updates.
Thanks for sharing and good luck with the build

Regards

Mark

Re: CAT 374D L
 

I started to build the undercarriage x-frame:) It will be possible to narrow the undercarriage for transport like in the real thing, just have to unscrew 48 bolts:p
I also found a nice picture of 374 beeing transported on a low loader:)

http://i327.photobucket.com/albums/k...L/IMG_0420.jpg

http://i327.photobucket.com/albums/k...L/IMG_0424.jpg

http://i327.photobucket.com/albums/k...29d4a68c_o.jpg

Re: CAT 374D L
 

The pace you are building at is just amazing!

How many hours a day do you spend on that beast?

Re: CAT 374D L
 

Too many:D
I'm on my annual leave, so I can spend more time with it :)

Re: CAT 374D L
 

Awesome work! And the pace is not compareable :D
Cnc is cool :cool:

Re: CAT 374D L
 

Wow !! Your work is amazing. Excellent work !!

Re: CAT 374D L
 

Got the x-frame top piece and the underside corner support pieces done. I also made the boom tip reinforcement plates:)

http://i327.photobucket.com/albums/k...L/IMG_0469.jpg

http://i327.photobucket.com/albums/k...L/IMG_0466.jpg

http://i327.photobucket.com/albums/k...L/IMG_0479.jpg

http://i327.photobucket.com/albums/k...L/IMG_0475.jpg

Re: CAT 374D L
 

When I look at your update pictures I start dropping F bombs... In a good way of course. There's just not that many polite ways to describe what you're doing!

Nice work Ari!!!!!!!!!!

Re: CAT 374D L
 

looks really nice, how much does your undercarriage weigh?

Re: CAT 374D L
 

Thanks again guys for the compliments:)

The undercarriage weight is now about 7 kg, that's without the tracks so it probably will be 10 kg when finished.

Re: CAT 374D L
 

Great!

How are going to solve the problem what comes when you need to connect drive motors with the ESC? I mean that the swinging is going to twist the wires.


First tesdrive shouldn't be too far heh?

Re: CAT 374D L
 

I'm going to use slip ring like these: http://www.hzqs.com/english/src.html

And what comes to the undercarriage test drive the only thing that's missing are the tracks:(