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42220

Was this the only loco to be fitted with the microprocessor control system
which achieved greater tractive effort by allowing the wheels to slip
slightly when accelerating? Or is it commonplace nowadays?
What effect does it have on rail wear?

(I remember being surprised when I heard that the co-efficient of friction
is greatest just AFTER the wheels begin to slip, rather than immediately
BEFORE, which is what we were taught in physics at Uni.)

Rgds

Ron BESDANSKY