Rural Retreat Depot is open today

[NW Mailing List]

Thank Ken, I just assumed it was unavailable like so many things in the
railroad world these days. Ordered.

Mike Rector

On Sat, Oct 15, 2022, 9:29 PM NW Mailing List <nw-mailing-list at nwhs.org>
wrote:

> Fifth book down the list:
>
> https://www.nwhs.org/commissary/books-nwhs.html
>
> Best
> Ken Miller
>
> > On Oct 15, 2022, at 7:40 PM, NW Mailing List <nw-mailing-list at nwhs.org>
> wrote:
> >
> > There I was checking my email, blissfully unaware there is a revised
> edition I now 'need'.   Thanks, Bud!  😉
> > <image.png>
> > Anyone know where to find a copy?
> >
> > Thanks!
> > Mike Rector
> >
> >
> > On Sat, Oct 15, 2022 at 11:31 AM NW Mailing List <
> nw-mailing-list at nwhs.org> wrote:
> > Gordon,
> >
> >
> >
> > Dave explained this in detail. I covered this on page 247 in the Giant
> book revised edition. With this change, the rod between #3 and #4 wheels
> were the same as the front single rods. Louis Newton was the one I got this
> information from and only four J’s were changed. They were change only if
> stress fractures appeared on #4 four crank pins.
> >
> >
> >
> > Bud Jeffries
> >
> >
> >
> > From: NW-Mailing-List <nw-mailing-list-bounces at nwhs.org> On Behalf Of
> NW Mailing List via NW-Mailing-List
> > Sent: Saturday, October 15, 2022 6:19 AM
> > To: NW Mailing List <nw-mailing-list at nwhs.org>
> > Cc: NW Mailing List <nw-mailing-list at nwhs.org>
> > Subject: Re: Rural Retreat Depot is open today
> >
> >
> >
> > Initially, all modern 4-8-4's in the 1940 era that were equipped with
> roller bearing rods using the so-called tandem rod connection between #2
> and #3 axles. In addition, because of this configuration, all of them had
> relatively long crankpins on #4 axle.  Because all railroads used the same
> method (tandem rods), this was likely the industry standard for handling
> the forces that had to be distributed through the running gear,
> particularly between axles #2 and #3 of a 4-axle engine set.
> >
> > N&W revised the Class J rods to do away with the tandem rod setup
> between #2 and #3 driving axle on four locomotives  from about 1952 to
> 1956.  From a side view, the change can be seen in a much larger rod hub on
> #3 axle, because one rod bearing must carry the same load that two smaller
> bearings carried before.  Also the hub on #4 axle is much shorter (the rod
> is closer to the driver face) which reduced the stresses that were present
> in the longer crankpin
> >
> >
> >
> > Dave Stephenson
> >
> >
> >
> >
> >
> >
> >
> > On Friday, October 14, 2022 at 10:41:35 PM EDT, NW Mailing List <
> nw-mailing-list at nwhs.org> wrote:
> >
> >
> >
> >
> >
> > Dave,
> >
> > Pardon my ignorance, but what is the modification of rods on these four
> Js?
> >
> > Gordon Hamilton
> >
> >
> >
> >
> >
> > On 10/14/2022 10:29 AM, NW Mailing List via NW-Mailing-List wrote:
> >
> > The four J's that I have for modified rods were 600, 605, 610, 611.  So
> with your photo, we've narrowed that to two.  Really does look like 611 in
> the negative enlargement, but the top part of the second "1" does look a
> little different  from the top part of the first "1"............  Thanks
> for posting!!
> >
> >
> >
> > Dave Stephenson
> >
> >
> >
> >
> >
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>
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