The efficiency of a worm and wheel can be less than 25%. Our gearboxes use precision spur and helical gears for quiet running and give efficiency above 75%. This enables them to transmit three times the power from a given motor to the track, or put another way, use a motor developing a third of the power to do the same job. The motors we use are smaller so the motor gearbox can be fitted easily, leaving more space in the firebox for adhesive weight. The higher efficiency also reduces the current drawn by the motor. This means that pick-ups can be lighter, reducing drag. It makes our units suitable for battery operation and DCC.
We now include DCC decoders in our range for sale - see our Decoder price list.
The gearboxes are very narrow, only 16mm overall, to leave space for compensation beams and springing gear. All gearboxes are also fitted with a 4mm pillar at the back under the motor. A fork piece (see below) can be attached to the chassis and fitted over this pillar to support and restrain the rotational movement of the gearbox while allowing it to float with the locomotives suspension. An optional second pillar can be ordered for the other end of the gearbox for compensation systems
There are two types of gearboxes 2 stage and 3 stage of which we offer 9 standard for the ‘0’ Gauge. We have a standard range of ratios to suit but if there is something special required just call to discuss.
VML2C (2 stage) Gearbox
Mini (3 stage) Gearbox
Please see full details on our 2 Stage and 3 Stage Gearbox pages.
Please also see our Specials page where we make some gearboxes specifically for certain locomotives.
To help in fixing the gearbox into the chassis Brian recommends using a fork, shown in the diagram right.
To fit the fork - this needs to be soldered to the chassis such that the fork is pointing towards the axle and the rear pillar of the gearbox needs to slide freely in the fork. This allows the gearbox to float in the chassis but prevents it rotating around the axle.
These can be supplied at a cost 2.00 each