Re: Boiler Problems, RGS No. 1, 1913

Earl Wrote:
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> J.B.Bane Wrote:
> --------------------------------------------------
> -----
> > SVRy 10/DRG74 Baldwin CN 5164 is shown with
> 130lb
> > WSP on the SVRy. Was this a down grade from
> what
> > it originally operated at when constructed?
>
>
> I think they were 145 as built. 130 might be what
> they got when they figured the boiler pressure at
> a factor of safety of 4.

The class 56 locomotives (baldwin class 10-24-E, including D&RG 74) would have been built in the late 1870's or early 80's with iron boilers and 130 pounds boiler pressure. The class 60 and the early 1880's class 70 engines (which became class C-19) were also built with iron boilers set to 130 pounds. Even the 1887-delivered, steel boiler-equipped class 70 locomotives (which became most of class C-17) were originally specified and delivered with 130 pound boiler pressure as confirmed by Baldwin works records. The Utah Central locomotive had its safeties set to 160 as built. The Florence & Cripple Creek engines (became class C-18) were delivered with 150 pounds pressure ratings. All of these 2-8-0's were more limited in their pulling ability by available adhesion rather than by tractive effort.