[steam_tech] Re: TRAINS.com latest- can steam make a comeback?

[NW Mailing List]

All,

I am not sure if you saw my message a Class A basically matches 1.6
SD70M-2's over 30 mph in the area of drawbar horsepower.  However diesels
are usually not worked to their maximum output level on a routine basis
because of increased maintenance costs.  So the more practical comparison
would be a Class A compared to 2 but not 3 SD70M-2's.

John Rhodes

Also you need to sign your posts.  Who am I talking to?

On Thu, May 29, 2008 at 11:18 AM, NW Mailing List <nw-mailing-list at nwhs.org>
wrote:


> My focus is on the bottom-line realities of hauling heavy trains at high

> speeds. There is a genuine economic function for them, currently precluded

> by the high costs of diesels. Not only do they improve customer service, but

> they make the physical plant and rolling stock more productive.

>

> Let's see if 1218 can do 60 mph or more with a 7500 ton train, as the Class

> A has been reported to do since an early test, and numerous times since

> then.

>

> Then let's see what three SD70s can do with such a train. (And also whether

> its trucks and motors that do enhance low speed performance do anything at

> speed.)

>

> Then let us compare the costs, capital and operating, at present levels.

> Then it will be simple arithmetic to plug in increased costs on the way, if

> not so simple to anticipate just what they will be.

>

> It will not be so simple to anticipate what boiler, exhaust, and valve

> improvements might do, but I understand they are considerable.

>

> What will it take to get 1218 back in running shape again?

>

>

> --- On Thu, 5/29/08, NW Mailing List <nw-mailing-list at nwhs.org> wrote:

>

> > From: NW Mailing List <nw-mailing-list at nwhs.org>

> > Subject: Re: [steam_tech] Re: TRAINS.com latest- can steam make a

> comeback?

> > To: "NW Mailing List" <nw-mailing-list at nwhs.org>

> > Date: Thursday, May 29, 2008, 6:19 AM

> > Wouldn't this steam vs diesel discussion be more focused

> > if&nbsp;comparisons were made between the drawbar pull

> > curves of the respective locos?&nbsp; Horsepower is

> > more fun, but without the use of adjectives (indicated,

> > drawbar, shaft, rail, etc, etc....), it's a shifty term

> > for comparison purposes.&nbsp; Tractive effort isn't

> > much better.&nbsp; Such curves certainly exist for the

> > Y6 and A, and there must be something similar available for

> > current&nbsp;diesels.

> > &nbsp;

> > Dave Stephenson________________________________________

> > NW-Mailing-List at nwhs.org

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>

>

>

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