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Electronics engineer & Model railway enthuiast
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Discussion Starter · #1 ·
Hi guys.
I have 3d printed a (mostly) working gauge 1 0-6-0 engine (Thomas) which is powered by a small dc electric motor taken from a HO engine but it doesn't provide enough power. (Video of engine below). I was hoping for some advice for what motor/gear box configuration other scratch builders are using in these larger scale engines?

Thanks guys!
Stephen

 

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Discussion Starter · #3 ·
Hello Graham, thanks for replying.
I've looked through what lgb and piko offer and I have a Piko engine block which I've based my design on. The reason I moved away from the premade engine blocks was the price and how little space was left in the engine for the controller. I went to a model railway exhibition near Lincoln a few years ago and I saw some scratch built engines where even the engine block was hand made but I have no idea how they did it. It was very impressive stuff! Looking back I should have taken more photos!
 

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Look up "N20 motor gearbox" or "N10 motor gearbox". They're small, but with way vastly more torque on the output than a worm-drive (which has huge power losses in the worm). They come in a variety of output speeds (based on gears ratios in the gearbox), and usually a choice of 5v or 12v rated motors (5v may be more use if going for a battery/radio system of control, need fewer volts in the batteries).
They may be powerful enough for what you're doing. If not, there are many similar motor gearboxes which are a little larger.
 

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Discussion Starter · #6 ·
Thanks so much for the recommendation. I bought and fitted a N10 motor and gearbox and it's made a huge difference. I was a little worried about how small it is but it delivers loads of torque!

Thanks again!
 
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