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Swedish Dm3 iron ore locomotive

Swedish classic iron ore Dm3 locomotive with Lego Powered Up motorization. Unit 1 and 3 each has a 2ch city hub + large motor, which powers the three large wheels with side rods. Unit 2 in the middle is not motorized.

The two hubs are controlled with a custom program in the PuP app, to run both motors in sync with one slider.

 

Arrangement of wheels deviates from the prototype. It's adapted to a proven configuration I've used for a number of years on my Da-locomotive => so the Dm3 handles standard Lego R40 curves and switches.

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Uploaded on January 14, 2026
Taken on October 29, 2025