Brass Question

[NW Modeling List]

Front end throttles are after the superheater. Dome throttles are before
the superheater. There are several impacts of what the change does
operationally and thermodynamiclly.

John Rhodes

On Thu, Jan 9, 2025, 10:10 AM NW Modeling List via NW-Modeling-List <
nw-modeling-list at nwhs.org> wrote:

> Pardon my ignorance, Mr. Jimmy, but what does that do exactly. If you
> don’t mind answering, I would appreciate it. I don’t know a lot about steam
> engines, but I’ve never heard of that.
> Sent from my smart phone cuzz I’m just high tech like that, know what I
> mean?
> WALLY
>
> On Jan 9, 2025, at 05:41, NW Modeling List via NW-Modeling-List <
> nw-modeling-list at nwhs.org> wrote:
>
> David, your model is missing a continuation of the throttle rod between
> the back of the sand dome and the equalizing lever on the boiler.
>
> The Y5s were to my knowledge the only Ys that used this particular
> throttle, so your supposition about the class of your model is correct. Not
> all Y5s used this throttle though. Later Ys (and As/Js) used an American
> front end throttle - it’s spotting feature is the large access plate behind
> the stack (and the throttle actuating lever just below it on the right side
> of the smokebox).
>
> Matt Goodman
> Columbus, Ohio
>
> Sent from my mobile
>
> On Jan 8, 2025, at 10:38 PM, NW Modeling List <nw-modeling-list at nwhs.org>
> wrote:
>
> 
> It is a Bradford Front End Throttle.
>
> Jimmy Lisle
>
>
>
> Sent from my Verizon, Samsung Galaxy smartphone
>
>
> -------- Original message --------
> From: NW Modeling List <nw-modeling-list at nwhs.org>
> Date: 1/8/25 7:20 PM (GMT-05:00)
> To: NW Modeling List <nw-modeling-list at nwhs.org>
> Subject: Brass Question
>
> Hi society,
> Does anyone know what this little thing in front of the smokestack is?
> This is supposedly a Y5.
> David Baker
> <1000005460.jpg>
>
>
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