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Forum: Construction Equipment 05-22-2020, 06:53 PM
Replies: 99
Views: 20,015
Posted By crueby
Re: Cat 340D Excavator build

Going to call this one just about done, and start playing with it! Got the last of the wiring bundled up and out of the way so the cab would go on, and set up the radio. Just need a lot more...
Forum: Construction Equipment Tech 05-08-2020, 06:59 PM
Replies: 17
Views: 3,640
Posted By crueby
Re: Gasket maker (and etc)

I'd check someplace like The O Ring Store - they have an enormous selection of all types of rings and seals.
Forum: Construction Equipment 05-03-2020, 04:01 PM
Replies: 99
Views: 20,015
Posted By crueby
Re: Cat 340D Excavator build

Thanks Skeeter! Between sessions of gluing/waiting for glue to dry/painting/waiting for paint to dry/repeat on the excavator cab, I've started generating the 2D drawings from the 3D CAD model of the...
Forum: Construction Equipment 04-29-2020, 06:03 PM
Replies: 99
Views: 20,015
Posted By crueby
Re: Cat 340D Excavator build

Hi Don,

Yes, I have been getting a lot of practice in Fusion, first started using it a few years ago for my Lombard log hauler model, then for the Marion steam shovel which was a huge project,...
Forum: Construction Equipment 04-29-2020, 01:39 PM
Replies: 99
Views: 20,015
Posted By crueby
Re: Cat 340D Excavator build

Some more progress to show - the wiring is pretty much done, still want to bundle up some of them but all is functional. Re-tensioned the tracks, since it was fine when the drive wheel was pulling...
Forum: Construction Equipment 04-24-2020, 03:17 PM
Replies: 99
Views: 20,015
Posted By crueby
Re: Cat 340D Excavator build

Yes - I took the bucket off, and held it to the side of the stick and moved the cylinder piston to both ends to figure out how much to change the pivot points, so it SHOULD be good now. I hope.... ...
Forum: Construction Equipment 04-24-2020, 10:01 AM
Replies: 99
Views: 20,015
Posted By crueby
Re: Cat 340D Excavator build

Thanks Rob!


I was taking a look at the travel on the bucket, it is not opening up as far as it should, looks like I need to adjust the positions of the links and cylinder a little bit to get the...
Forum: Construction Equipment 04-23-2020, 05:40 PM
Replies: 99
Views: 20,015
Posted By crueby
Re: Cat 340D Excavator build

Got the bigger/stronger gearmotor installed for the main boom raise/lowering, had to rearrange a few things to get it to fit in the cab. It works much better, the original one was barely able to...
Forum: Construction Equipment 04-22-2020, 09:38 PM
Replies: 99
Views: 20,015
Posted By crueby
Re: Cat 340D Excavator build

Hi Frizzen, there is a chain drive inside the tracks, with a 1/4" pitch bike style chain. Sprocket on the shaft with the motor, chain up to another sprocket on the track drive wheel. The drive wheels...
Forum: Construction Equipment 04-22-2020, 05:21 PM
Replies: 99
Views: 20,015
Posted By crueby
Re: Cat 340D Excavator build

Got the motors mounted to the track undercarriage, ready to wire things in...


https://i.postimg.cc/KjQ15yhH/IMG-7028a.jpg
Forum: Construction Equipment 04-22-2020, 02:24 PM
Replies: 99
Views: 20,015
Posted By crueby
Re: Cat 340D Excavator build

More done on the tracks - got the frames painted, chain drives installed, and fit to the frame. Here is a test assembly of the whole thing, will pull the cab/booms off again to turn the track...
Forum: Construction Equipment 04-21-2020, 05:19 PM
Replies: 99
Views: 20,015
Posted By crueby
Re: Cat 340D Excavator build

Another major assembly almost done - got the track frames/tracks assembled this afternoon, moving quite well. Still some more trim panels and brackets to go on, and need to pull the tracks off one...
Forum: Construction Equipment 04-19-2020, 01:32 PM
Replies: 114
Views: 31,150
Posted By crueby
Re: HIAB X-HIPRO 1058 loader crane

Hi Ari,


Actually it is these plates I was wondering about:


https://i.postimg.cc/QtXNqw4v/Image6.jpg
Forum: Construction Equipment 04-15-2020, 01:50 PM
Replies: 114
Views: 31,150
Posted By crueby
Re: HIAB X-HIPRO 1058 loader crane

Sorry if I missed it from earlier, but what is the function of the elongated plates on the pins?
Forum: Construction Equipment 04-15-2020, 09:17 AM
Replies: 99
Views: 20,015
Posted By crueby
Re: Cat 340D Excavator build

Got enough of the wiring done to test things out, and swapped the main boom motor for a slower/stronger one which is pretty close but could be a little faster. Here is a short video testing the...
Forum: Construction Equipment 04-14-2020, 08:10 PM
Replies: 99
Views: 20,015
Posted By crueby
Re: Cat 340D Excavator build

Got enough wired up to do some testing - the bucket and stick motors working well, the motor that drives the two cylinders on the main boom does need an upgrade though - with the weight of the booms...
Forum: Construction Equipment 04-14-2020, 10:02 AM
Replies: 99
Views: 20,015
Posted By crueby
Re: Cat 340D Excavator build

Got the cab/boom assembly bolted onto the track base this morning:


https://i.postimg.cc/8kWn44jH/IMG-7019a.jpg

As expected, needs some counterwieght at the back of the cab to balance out the...
Forum: Construction Equipment 04-13-2020, 07:29 PM
Replies: 99
Views: 20,015
Posted By crueby
Re: Cat 340D Excavator build

Hi Zabco,


That is an APT boring head - it takes the same 3/8" boring bits as the Sherline, but is a much more rigid and accurate head. The Sherline one just pushes on the moving portion of the...
Forum: Construction Equipment 04-13-2020, 07:25 PM
Replies: 99
Views: 20,015
Posted By crueby
Re: Cat 340D Excavator build

Thanks Rob! Got some paint drying on the base parts, hope to start assembling it to the boom tomorrow, then can start wiring up the motors to the speed controls and do some full motion tests, see how...
Forum: Construction Equipment 04-12-2020, 05:16 PM
Replies: 99
Views: 20,015
Posted By crueby
Re: Cat 340D Excavator build

Bored out the hole for the spindle assembly:


https://i.postimg.cc/3JQf9W0D/IMG-7016a.jpg


and test fit in the base:


https://i.postimg.cc/8PdKYDLX/IMG-7017a.jpg
Forum: Construction Equipment 04-12-2020, 12:28 PM
Replies: 99
Views: 20,015
Posted By crueby
Re: Cat 340D Excavator build

More done on the undercarriage - getting it skinned with aluminum sheet. All are roughed in, ready to do final trimming/blending on the edges.


https://i.postimg.cc/cJqFKwLk/IMG-7015a.jpg

...
Forum: Construction Equipment 04-12-2020, 08:22 AM
Replies: 99
Views: 20,015
Posted By crueby
Re: Cat 340D Excavator build

:lol:
Mike is sorta right, not enough room to fit the boiler in the cab!




Actually, its a combination of cost and mess - having seen what happens when a hydraulic line leaks, and I want to...
Forum: Construction Equipment 04-11-2020, 04:46 PM
Replies: 99
Views: 20,015
Posted By crueby
Re: Cat 340D Excavator build

Started in on the framework for the undercariage - this will hold the spindle/hub for the cab on the top, and the tracks out at the lower arms.


https://i.postimg.cc/CLpWWJdc/IMG-7011a.jpg

...
Forum: Construction Equipment 04-10-2020, 11:40 AM
Replies: 99
Views: 20,015
Posted By crueby
Re: Cat 340D Excavator build

Got some more done on the floor plate, riveted on the angle pieces around the edge to hold the cab in place, and bolted down the motor and boom base parts.

...
Forum: Construction Equipment 04-09-2020, 04:33 PM
Replies: 99
Views: 20,015
Posted By crueby
Re: Cat 340D Excavator build

Getting the floor plate drilled for the mounting screws, and test fitting the parts....


Bottom view:


https://i.postimg.cc/DzQwFZ1R/IMG-7004a.jpg


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