Re: Super Series 42220

[craigd@lios.apana.org.au (C. Dewick)]

In <mauried.233.374BCB9A@commslab.gov.au> mauried@commslab.gov.au (Maurie Daly) writes:

>>As a general rule 82s pull more but NRs go faster with any given load.
>>For example a full load up Stawell bank with a BL/G/C would have us
>>down to around 20 km/h. An NR happily goes over the top at around 35
>>km/h. 

>Thanks for this Kev , all makes sense.
>Its understandable that a NR will go faster than 81/BL/G etc for the same load 
>You would want to get something for the extra 1000 HP.
>Curious though why Freightcorp opted to use 81s for the Leigh Creek line when 
>82s would have allowed heavier trains for the same no of locos,maybe something 
>to do with the power by the hour contract.

It's probably got a lot to do with the traction motor gearing too, not just
that the diesel engine in the loco has a wider power range.

Also, 82's are significantly heavier than 81's, so some axle-load
restrictions could be coming into play too.

Regards,

Craig.
-- 
            Craig Ian Dewick            |       Stand clear - jaws closing
 Send email to craigd@lios.apana.org.au |  Visit my Australian rail transport
   Professional Train Driver, Cityrail  |      and rail modelling web site:
       and HO scale rail modeller       |   http://lios.apana.org.au/~craigd