40hp O&K contractor loco

NPL-003 • by Narrow Planet

About the kit

This kit is comprised of a 3D printed plastic body shell and a fret of etched nickel silver detail parts. No folding of these parts is required and they can all be glued in place. A appropriately sized chimney (an original Minitrains spare part) is also included.

The body is designed to fit on the Minitrains Krauss 0-4-0 steam loco chassis, at present this may be ordered with the kit by selecting the appropriate option.

Download full instructions (PDF)

Please note this is a scale model for adult collectors, and not intended for children under 14 years of age.

Prototype Info

30hp O&K Eigiau at the Bredgar & Wormshill Light Railway. Photo: Tom Dauben

The prototype Orenstein & Koppel well tank was available in a range of standard designs that evolved over a 50 year period. The design was primarily marketed as a ‘contractor's’ type locomotive, supplied to small industrial firms for internal narrow gauge networks or construction projects.

In the UK they were used in both industrial and construction work and there are a number of the 30 and 50hp examples preserved. Arguably the most famous of these was the Penrhyn Quarry’s Eigiau, a 30hp machine, now based on the Bredgar and Wormshill in Kent.

In the North West, the West Lancashire Light Railway has a pair of 30hp machines and there are many others in use across the country. Our model depicts a machine that is sized between the 30 and 50hp designs and is based upon factory-sourced prototype drawings.


Postage is included for UK orders. For international orders shipping is at cost. Please note any local import duty or taxes that may be applied on delivery are the buyer's responsibility.

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