The illustrated scenareos (below) show common locomotive types and are based on typical requirements and you can tailor these suggestions to better suit your own needs by swapping gear ratios or motor type, taking into account wheel diameter, prototypical variations as well as layout size and type.

Alternatively, you may wish to work out your own solution from scratch and we have a dedicated PLANNING PAGE which takes you through the whole process.

A description of each individual  gearbox is available in our GEARBOX SHOP

Shunters and Industrials

Freight Locomotives

Mixed Traffic

Passenger Engines

Other Useful Resources

Gearbox Planner

with scale diagrams for double-checking dimesnions or working out your own custom solution.

Speed Calculator

for determining which gear ratio and motor type is best suited to your locomotive.