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Showing results 176 to 188 of 188
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Posts Made By:
SteinHDan
Forum:
Construction Equipment
10-24-2015, 07:00 PM
Replies:
164
90 ton 1/14 metal excavator scratch build w/embedded PC
Views:
142,032
Posted By
SteinHDan
Re: 90 ton 1/14 metal excavator scratch build w/embedded PC
The swing drive consists of a drive motor, a milled bevel gear and a set screw:
http://d1t2tbzmskak12.cloudfront.net/cat-excavator/IMAG0798.jpg
The drive motor is a 12V 50RPM gear motor. The...
Forum:
Construction Equipment
10-24-2015, 06:48 PM
Replies:
164
90 ton 1/14 metal excavator scratch build w/embedded PC
Views:
142,032
Posted By
SteinHDan
Re: 90 ton 1/14 metal excavator scratch build w/embedded PC
I wanted to create a very simple swing mechanism, but ended up with something not that simple. I tried various types of bearings, and I was very close to just stack 5 of these on top of each other,...
Forum:
Construction Equipment
10-24-2015, 04:35 PM
Replies:
164
90 ton 1/14 metal excavator scratch build w/embedded PC
Views:
142,032
Posted By
SteinHDan
Re: 90 ton 1/14 metal excavator scratch build w/embedded PC
Hi Crusher!
Thanks!
No, no plans to sell, but you can have it for free:
- http://d1t2tbzmskak12.cloudfront.net/cat-excavator/undercarriage_4%20v122.f3d (5MB)
Just download the free...
Forum:
Construction Equipment
10-22-2015, 06:04 AM
Replies:
164
90 ton 1/14 metal excavator scratch build w/embedded PC
Views:
142,032
Posted By
SteinHDan
Re: 90 ton 1/14 metal excavator scratch build w/embedded PC
Thanks!
I bought the chain in a local shop, but I see that you can buy the same on Amazon by the meter:
- 1M 08B K1 attachments: http://amzn.to/1W71CaA
Stein :-)
Forum:
Construction Equipment
10-21-2015, 02:43 PM
Replies:
164
90 ton 1/14 metal excavator scratch build w/embedded PC
Views:
142,032
Posted By
SteinHDan
Re: 90 ton 1/14 metal excavator scratch build w/embedded PC
Yes, I also don't like the large gaps. I think on this model it has mostly got to do with the track pad length being too long (25.4mm VS the 18mm it should have been if it were to scale) caused by me...
Forum:
Construction Equipment
10-20-2015, 11:44 AM
Replies:
164
90 ton 1/14 metal excavator scratch build w/embedded PC
Views:
142,032
Posted By
SteinHDan
Re: 90 ton 1/14 metal excavator scratch build w/embedded PC
The first test drive:
https://www.youtube.com/watch?v=AoB3Eev6npk
Forum:
Construction Equipment
10-20-2015, 11:33 AM
Replies:
164
90 ton 1/14 metal excavator scratch build w/embedded PC
Views:
142,032
Posted By
SteinHDan
Re: 90 ton 1/14 metal excavator scratch build w/embedded PC
The tracks are made of an industry-standard roller chain and track pads. The roller chain I'm using is a British Standard 08B 1/2" pitch chain, similar to the ANSI #40 chain. I'm using this chain as...
Forum:
Construction Equipment
10-20-2015, 10:27 AM
Replies:
164
90 ton 1/14 metal excavator scratch build w/embedded PC
Views:
142,032
Posted By
SteinHDan
Re: 90 ton 1/14 metal excavator scratch build w/embedded PC
The top rollers are similar to the bottom rollers, but a bit smaller.
The type is SG15 U Groove 5x17x8mm Sealed Ball Track Guide Bearing.
Ebay link:
- http://www.ebay.com/itm/400561381584
...
Forum:
Construction Equipment
10-19-2015, 05:02 PM
Replies:
164
90 ton 1/14 metal excavator scratch build w/embedded PC
Views:
142,032
Posted By
SteinHDan
Re: 90 ton 1/14 metal excavator scratch build w/embedded PC
The drive motor drives the drive sprocket directly. A 12mm steel tube (inner diameter 8mm) matches the inner diameter of the drive sprocket and also extends the gear motor axle somewhat.
...
Forum:
Construction Equipment
10-19-2015, 02:20 PM
Replies:
164
90 ton 1/14 metal excavator scratch build w/embedded PC
Views:
142,032
Posted By
SteinHDan
Re: 90 ton 1/14 metal excavator scratch build w/embedded PC
I was thinking a lot about if a track tensioner is needed. It adds quite a lot to the complexity of the undercarriage, and one of the goals was to keep it simple. But after some testing, I found that...
Forum:
Construction Equipment
10-19-2015, 01:46 PM
Replies:
164
90 ton 1/14 metal excavator scratch build w/embedded PC
Views:
142,032
Posted By
SteinHDan
Re: 90 ton 1/14 metal excavator scratch build w/embedded PC
The main frame is made very strong, as this component is the one that prevents twisting in the undercarriage.
It consists of a roof and a floor in 6mm aluminium and the vertical parts in 12mm...
Forum:
Construction Equipment
10-18-2015, 05:41 PM
Replies:
164
90 ton 1/14 metal excavator scratch build w/embedded PC
Views:
142,032
Posted By
SteinHDan
Re: 90 ton 1/14 metal excavator scratch build w/embedded PC
The two side rails (is that the right name?) are made of a aluminum + ABS sandwich construction. The outer sides are 3mm 6082 aluminum, which is easy to machine. The ABS in the middle is 3D printed...
Forum:
Construction Equipment
10-18-2015, 05:16 PM
Replies:
164
90 ton 1/14 metal excavator scratch build w/embedded PC
Views:
142,032
Posted By
SteinHDan
90 ton 1/14 metal excavator scratch build w/embedded PC
I've always wanted to build an excavator, and now the time has come!
The main goal of this project is to build an excavator that can dig normal dirt like you'd find in your own back yard.
Some...
Showing results 176 to 188 of 188
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