Traction Motors
The photographs show the inverted chassis of a shunter. One axle is shown, driven by a 150 Watt permanent magnet motor using a single reduction chain. The centre line of the motor and axle are the same height above rail and therefore the vertical movement of the sprung axle is minimal to the motor. The chain drive can be enclosed in a cover/bath to aid with lubrication and to exclude debris.
For most applications a single reduction is possible. Individually driven axles are preferable. i.e. just as BR designed.
The photographs show the inverted chassis of a shunter. One axle is shown, driven by a 150 Watt permanent magnet motor using a single reduction chain. The centre line of the motor and axle are the same height above rail and therefore the vertical movement of the sprung axle is minimal to the motor. The chain drive can be enclosed in a cover/bath to aid with lubrication and to exclude debris.
For most applications a single reduction is possible. Individually driven axles are preferable. i.e. just as BR designed.