This is our gearbox suitable for small On3 and S standard guage steamers. Input shaft is ball bearing equipped with a worm installed. With an integrated reduction, final reduction is 48:1. Perfect for narrow gauge and early standard gauge steamers. Each gerabox consists of high resolution nylon printed housings. All bearing surfaces are equipped with micro ball bearings including the drive axle. Gears are NWSL. Custom motor mount housings are available that will retain the motor of your choosing. Reach out with questions or details!
Each gearbox is made to order. Axle diameters vary but the primary design is designed for 3mm axles.