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Re: 42220

Ronald BESDANSKY <ronbest@bigpond.com> wrote in message
FSZD3.18341$ei1.36248@newsfeeds.bigpond.com">news:FSZD3.18341$ei1.36248@newsfeeds.bigpond.com...
> 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
>
>
42220 was the testbed for the Super Series equipment in NSW. All 81s were
built with it and I would think also the 82s and 90s.
--
Regards,
Chris Stratton
Wollongong, NSW, Australia
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