Gear set 16:1
As used in heavy duty chassis, Jessie, Shelley loco’s has 1/8” bore in wheel and 2.5 mm bore in worm £4.00 set
Gearbox/Motor Unit
A powerful electric motor, capable of running on 3 to 18 volts, with a fully enclosed 40:1 gearbox turning a 1/8” axle. A versatile power unit that can be mounted vertically or horizontally.         
Budget Electric Chassis KIt
This chassis provides a sound basis for scratch building your own locomotives.  The main chassis is formed from steel with brass bearings; wheels and axles are steel and there is a worm drive to one axle. The tough electric motor will operate happily on two AA batteries, or with up to 4.8 volts when used with a speed controller.  The chassis is supplied with battery holder for 2 x AA cells and an on/off switch.
DATA: Wheelbase: 60mm. Wheel dia: 20mm. Chassis length: 120mm.
Height (from rail to top of motor): 52mm. Fixing holes: 2 at 3.2mm on
105mm centres.           
£26.00    Specify 32mm or 45mm gauge.
Gear set 30:1
As used on all other chassis in our range has 1/8” bore in wheel and
2 mm bore in worm £4.00 set
Manual speed controller
This speed controller gives you back control all parts are provided with professionally written instructions suitable for any motor that dose not exceed 2 amps current. £14.00