On Dec 21, 6:53*pm, "Dave Plowman (News)"
wrote:
In article
,
* *harry wrote:

*Breakdowns are very rare there is only one
moving part in the motor.

But lots of control gear for that motor...


There were tappings on the field winding and a big tapped resistor
for speed control.
The resistor was used as a "coasting brake" down hills. No
regenerative braking on ours back then.
But no oil air/oil filters etc,
Lots of maintenence on the overhead wires.