Class J's - trackworthiness? UP set up?

[nw-modeling-list at nwhs.org]

Thanks guys! Very interesting information.
Charlie Long

-----Original Message-----

>From: nw-modeling-list at nwhs.org

>Sent: Oct 3, 2006 7:59 AM

>To: N and W Modeling List <nw-modeling-list at nwhs.org>

>Subject: RE: Class J's - trackworthiness? UP set up?

>

>UP's FEF's (844) had lateral motion boxes on the first

>three axles, allowing for 3/4", 5/16" and 5/16" play

>(The Mighty 800, Kratville, p47).  This effectively

>reduced their rigid wheelbase, which otherwise would

>have been 22' long. 

>

>On the Big Boys, the same setup was used, lateral

>motion on the first three axles of each engine (Big

>Boy, Kratville, p49).  This reduced the rigid

>wheelbase which would have been 18'-3".

>

>The Js did not have this feature, so their 18'-9"

>wheelbase was the controlling dimension.

>

>Dave Stephenson

>

>--- nw-modeling-list at nwhs.org wrote:

>

>> Charlie:  Since the track settings are a compromise,

>> figure that the ratio

>> of 2 to 3 dozen steam excursions per year compared

>> to 50,000 -100,000 diesel

>> trains per year.  And the diesel trains pay the

>> bills?   The excursion

>> trains will be slowed down and not run over certain

>> tracks.

>> 

>> Gary Rolih

>> 

>> -----Original Message-----

>> From: nw-modeling-list-bounces at nwhs.org

>> [mailto:nw-modeling-list-bounces at nwhs.org] On Behalf

>> Of

>> nw-modeling-list at nwhs.org

>> Sent: Monday, October 02, 2006 12:59 PM

>> To: N and W Modeling List

>> Subject: RE: Class J's - trackworthiness? UP set up?

>> 

>> 

>> It would be interesting to see how UP sets up their

>> track since they operate

>> both steam and diesel more often than any other

>> modern freight hauling rr.

>> Not having drawings in front of me, I'm guessing

>> that the Big Boy's rigid

>> wheel base is approximate to the J's.

>> Charlie Long

>> 

>>

>

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