Dock Shunter (G gauge)
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A G gauge remake of the classic Triang dock shunter. Printable on an A1 mini (or equivalent size.)
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Model information
- Source
- Printables
- Category
- RC & Robotics
- License
- Creative Commons — Attribution — Share Alike
The Triang dock shunter is a bit of a classic. While a very old model now and vastly more basic than even budget models these days, many are still going strong - and while a fictional loco, there's something I find rather charming about its boxy, rugged appearance. I decided to build one of my own, for my homebrew G scale railway. This one is battery operated over wifi, but it could be adapted relatively easily into a track-powered variant.
As well as the above printed parts, you'll need:
Solder & electrical wire (relatively easy soldering though - don't worry!)
SPST KCD1 switch
Variety of M3 & M2 nuts & bolts
Pi Pico 2W
HW-039 / BTS7960 motor controller
12V battery (I used https://amoz.onl/5pX which conveniently has DC barrel jacks on it too so the parts fit this one - but others can be used instead. For testing you could just use a 9V battery initially!)
3.3V regulator (I used a mini PCB switching regulator, but any small one should work as the model has points to use cable ties to hold this in place)
4 x N20 motors with a right angle, 8mm shaft (I used https://www.aliexpress.com/item/1005007886128681.html - the 12V, 8mm shaft, 136rpm version.)
I've added some build instructions - hopefully they're helpful. Afraid I didn't get around to taking photos and describing the last few steps in detail - hopefully it's clear enough. Thought better to publish what I had rather than wait indefinitely and never get around to improving it!