Re: 82's Leading Patricks West- Question on 82 cl gear ratios & what

[John MacCallum <johnmac@MYlisp.com.au>]

Maurie Daly wrote:
> 
> >I think that the NRC should have tried the Westrail 'Q' class- 4000hp,
> >radial bogies, D87BTR traction motors, a much better package.
> 
> The Qs didnt exist at the time the NRs were ordered and fuel costs were of
> paramount importance to NRC as they had then to pay the fuel excise.
> Four stroke locos still win hands down in fuel efficiency over 2 strokes and
> would have been a big deciding factor .
> As a rough example the EMD 16-710G3 series engine as used in the Qs and the
> SRA 90s pulls approx 1200 litres / hour in 8th notch compared with the
> GE7FDL-16 engine in the NR which uses only 860 litres / hour in 8th notch.
> Things are better now with the removal of the fuel excise.
> 
> MD

That's Interesting Maurie. Do you have any other consumption
figures for other EMD engines?

When we work an Heavy train up the Mountains from Enfield to
Lithgow , 81's with their 16-645 engines use about 1200 to 1500 litres.
That's for 150 klm about which approx. 90 ins in notch 8.
the rest of the time in some lower notches. Bare in mind that
the train needs to ascend from about 50 metres to 1050 metres 
and then descend to 900 metres in about 3 1/2 hours of running.
-- 

Pope

Alias	John MacCallum

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