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<p>Wally,<br>
Similar to the American multiple valve front end throttle, the
Bradford Throttle moved the throttle valve that had previously
been located in the steam dome, which was before the saturated
steam entered the superheater, to a position at the front of the
boiler where it was located after the superheater. Among other
things, this should have made the locomotive quicker to respond to
throttle openings by having superheated steam quickly available to
move to the cylinders. Before, with the throttle valve located in
the steam dome, when the throttle was closed, the superheater
system was without steam and one had to wait for the pressure and
superheated steam to build up between the steam dome and
cylinders.</p>
<p>Jimmy Lisle<br>
</p>
<div class="moz-cite-prefix">On 1/9/2025 9:40 AM, NW Modeling List
via NW-Modeling-List wrote:<br>
</div>
<blockquote type="cite"
cite="mid:mailman.1037.1736435450.1039.nw-modeling-list@nwhs.org">
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
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.<br
id="lineBreakAtBeginningOfSignature">
<div dir="ltr">Sent from my smart phone cuzz I’m just high tech
like that, know what I mean?
<div>WALLY </div>
</div>
<div dir="ltr"><br>
<blockquote type="cite">On Jan 9, 2025, at 05:41, NW Modeling
List via NW-Modeling-List <a class="moz-txt-link-rfc2396E" href="mailto:nw-modeling-list@nwhs.org"><nw-modeling-list@nwhs.org></a>
wrote:<br>
<br>
</blockquote>
</div>
<blockquote type="cite">
<div dir="ltr">
<meta http-equiv="content-type"
content="text/html; charset=UTF-8">
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.
<div><br>
</div>
<div>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). <br
id="lineBreakAtBeginningOfSignature">
<div dir="ltr">
<div><br>
</div>
<div>Matt Goodman</div>
<div>Columbus, Ohio</div>
<div><br>
</div>
Sent from my mobile</div>
<div dir="ltr"><br>
On Jan 8, 2025, at 10:38 PM, NW Modeling List
<a class="moz-txt-link-rfc2396E" href="mailto:nw-modeling-list@nwhs.org"><nw-modeling-list@nwhs.org></a> wrote:<br>
<br>
</div>
<div dir="ltr">
<meta http-equiv="Content-Type"
content="text/html; charset=UTF-8">
<div dir="auto">It is a Bradford Front End Throttle.</div>
<div dir="auto"><br>
</div>
<div dir="auto">Jimmy Lisle</div>
<div dir="auto"><br>
</div>
<div dir="auto"><br>
</div>
<div dir="auto"><br>
</div>
<div id="composer_signature" dir="auto">
<div style="font-size:12px;color:#575757" dir="auto">Sent
from my Verizon, Samsung Galaxy smartphone</div>
</div>
<div dir="auto"><br>
</div>
<div><br>
</div>
<div align="left" dir="auto"
style="font-size:100%;color:#000000">
<div>-------- Original message --------</div>
<div>From: NW Modeling List
<a class="moz-txt-link-rfc2396E" href="mailto:nw-modeling-list@nwhs.org"><nw-modeling-list@nwhs.org></a> </div>
<div>Date: 1/8/25 7:20 PM (GMT-05:00) </div>
<div>To: NW Modeling List
<a class="moz-txt-link-rfc2396E" href="mailto:nw-modeling-list@nwhs.org"><nw-modeling-list@nwhs.org></a> </div>
<div>Subject: Brass Question </div>
<div><br>
</div>
</div>
<div dir="auto">Hi society,
<div dir="auto">Does anyone know what this little thing
in front of the smokestack is? This is supposedly a
Y5.</div>
<div dir="auto">David Baker<br>
<div><1000005460.jpg></div>
<br>
<br>
</div>
</div>
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<pre wrap="" class="moz-quote-pre">________________________________________
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