UP Aux Water Tender

I found this. Hope it tells you what your looking for. I don't think they were used back in the 40's since watering stations were more common than they are now. Just Google, "Union Pacific Aux Tenders". A bunch of images come up both prototype and model. I would imagine that one these tenders will be with the 4014.

https://www.google.com/search?...mp;spf=1555258557560

http://utahrails.net/pass/water-cars.php

Also, Here a YouTube video of the 844. You can periodically see the Aux Tender behind the engines tender.

https://www.youtube.com/watch?v=HRTYNxtbnjI

To the best of my knowledge, the UP didn't use auxiliary water tenders during the steam or steam/diesel transition era.  Even early in it's excursion career during the 1960's and 1970's, 844(4) didn't use an auxiliary.  The UP's current auxiliary water tenders were rebuilt from UP's "Big Blow" turbine fuel tenders, which came the early 800 class Northern's.

Rusty

I did some research while modeling (in 3D printing) the two AWTs that UP uses for excursions and found no evidence of UP using any AWTs in revenue service. The two used now only date from around 2005.

Note that neither Lionel nor MTH has ever made models of these. What I believe Lionel has done instead is use (or “recycle”) the same die cast shells from the models they have done of UP turbines that had slope-sided fuel tender bodies. (I read somewhere that the slopes were designed to avoid the tender being hit direct by turbine exhaust.) There’s slightly more variety in MTH’s AWTs but the ones they issue as UP are the same shape as Lionel’s and probably for the same reason.

Hancock52 posted:

I did some research while modeling (in 3D printing) the two AWTs that UP uses for excursions and found no evidence of UP using any AWTs in revenue service. The two used now only date from around 2005.

Note that neither Lionel nor MTH has ever made models of these. What I believe Lionel has done instead is use (or “recycle”) the same die cast shells from the models they have done of UP turbines that had slope-sided fuel tender bodies. (I read somewhere that the slopes were designed to avoid the tender being hit direct by turbine exhaust.) There’s slightly more variety in MTH’s AWTs but the ones they issue as UP are the same shape as Lionel’s and probably for the same reason.

The Lionel and MTH models are basically correct for earlier excursions from around the 1980's, before they were rebuilt:

Rusty

Rusty Traque posted:

The Lionel and MTH models are basically correct for earlier excursions from around the 1980's, before they were rebuilt:

Rusty

Oh well, another illusion shattered - but I still think it was easier for Lionel and MTH to model these based on existing tooling and even put Old Glory on them as an imitation of one of the current AWTs (Jim Adams). 

I have a one of the Lionel tenders and one from 3rd Rail and I don’t think that the roof detail matches the photo above; instead it looks to me more like a fuel tender configuration.  On the pair of AWTs I had 3D printed it does match the current UP versions. 

P.S. I think that the definitive answer to the OP’s original question is in this old thread on AWTs:

https://ogrforum.com/...xiliary-water-tender

In a nutshell, UP did not use them before the Excursion Train era whereas N & W made extensive use of them and they were called “canteens.”