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Post by Mopacman on Dec 30, 2023 1:55:08 GMT
I am interested in finding specific new rolling stock for my collection, based on what I have seen in real life. I viewed the Union Pacific Big Boy steam engine a couple of years ago as it traveled through Kansas. In addition to seeing an impressive steam engine (I suggest seeing it in person if you ever have the chance), there was also an interesting supporting consist of rolling stock behind it. That consist included an SD70 diesel engine for additional power to support the Big Boy and passenger cars from Union Pacific's extensive collection. Also included was a auxiliary power generator car to provide power to the passenger cars. It looked impressive in real life, and would be a great addition to an o scale collection consisting of Union Pacific passenger cars being pulled by non-generator equipped engines. I purchased a Lionel Union Pacific auxiliary power car, modeled after a box car. It is small in comparison to the passenger cars. Attached is a picture of an auxiliary power car in N Scale (manufacturer unknown) that looks very similar to the generator car on the Big Boy tour. I have looked extensively on the internet to see if any O scale manufacturer produces a car like this, with no luck. Has anyone seen a car like this produced in O scale?  |
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Post by harborbelt70 on Dec 30, 2023 2:15:48 GMT
I have looked too, and I’m afraid that the answer is no - not in O scale. The generator car issued with the first run of Lionel’s Union Pacific Excursion Train cars is an inadequate representation of this car. I once looked at the possibility of scaling up the N scale 3D printed versions of the prototype to O scale dimensions but the Lionel generator car chassis is too short for this purpose. You could use one of the longer wheelbase passenger cars but then the cost of 3D printing the body would be considerable.
I haven’t pursued this and it seems unlikely that any O gauge manufacturers would be interested, which is a shame but the car is a specialized interest. If you find out anything more recent or hopeful I’d be very interested to know!
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Post by Mopacman on Dec 30, 2023 2:46:21 GMT
Glad to see there is interest by someone besides me on this subject! I will certainly keep you posted if I find any manufacturer(s) producing a car like this.
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Post by firewood on Dec 30, 2023 2:53:39 GMT
That’s an interesting car - maybe a bit unique. A lot of railroad generator cars are more boxcar-based - exceptions exist of course, like this one. It might be possible to adapt an O gauge passenger car with overlays and add-on roof to resemble the auxiliary unit. Maybe a kit of 3D-printed parts?
Dave
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Post by curtis on Dec 30, 2023 3:34:50 GMT
I am in! Keep me posted also.
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Post by harborbelt70 on Dec 30, 2023 10:58:46 GMT
When I was looking around for a model of the 2066 power car (the one pictured above), I came across a few videos and articles about scratch-built versions in smaller scales, including HO, but not O scale. In O the car would be huge. This video gives an idea of what would be involved in creating an accurate scale model. It put me off because it was clear that the time and cost would be very substantial:
I did wonder about creating a humpback roof to go on the Lionel generator car but it would look nothing like the real thing without more accurate window placements. The only realistic option is that if someone is prepared to scale up a set of 3D printing body and roof panels a commercial 3D printer might produce it, and a frame and trucks could be scavenged from a 21” passenger car.
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Post by Mopacman on Dec 30, 2023 19:51:39 GMT
Thank you for sharing this video. This certainly puts in perspective the work (and cost) involved in creating a car like this. This is a great example of the U.P. generator car!
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Post by jayhawk500 on Feb 6, 2024 15:25:18 GMT
This is my first post on the site. But I am in the process of building the UPP2066. I have most everything worked out. Just need to get a 3D printed hump made. I have a member willing to help me with that, but I need to get measurements and arieal photos of the car. If anyone that has pictures is willing to help it woyuld greatly be appreciated. Here's a link to my other thread. ogrforum.ogaugerr.com/topic/modeling-union-pacific-s-generator-car-upp-2066#lastReply |
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Post by harborbelt70 on Feb 6, 2024 22:21:13 GMT
I’ll come back to you on this when I have done some further research, but wouldn’t your best bet be to see if someone who has already produced an N or HO scale 3D printed model of this car be willing to scale up their drawings for you and print the roof section? The drawing done by Alan on OGRF isn’t intended to be exactly proportionate and I assume that is why you are asking for the additional info. You might get it from the guy whose YouTube video I posted earlier in this thread.
I will say that having looked at doing this project myself I did not think that a perfectly scale-accurate O scale replica was possible except at considerable expense and time. Details like fan profiles might have to be sacrificed in the interests of completing a reasonable representation of the prototype. One thing I considered was just getting a 3D printed N scale shell and scaling up its measurements to fabricate the roof hump out of styrene.
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Post by harborbelt70 on Feb 7, 2024 8:11:09 GMT
You might have seen this before but there is a Facebook page that identifies two guys who have done this car in HO or N scale (or both) who might be able to supply you with the special roof or the dimensions that they used:
section: www.facebook.com/Track29RN/posts/union-pacific-power-car-2066-completed-by-justin-sobeck/101894151675482/
This is an example of what one of them produced:
 It occurs to me that as you already have the car height and length, the size of the roof section might be capable of being ascertained just by dead reckoning. I am not aware of any more detailed drawings than you have found but I have seen numerous photos of the roof on the usual railfan photo sites.
P.S. If you get the car sides from Union Station products and the window placements are prototypical, it seems to me that you can work out from them reasonably accurately what the length and slopes of the hump roof should be based on the above photos and other side shots of the car. If you do get to the stage of having it 3D printed or otherwise fabricated I’d be in for one as well.
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Post by jayhawk500 on Feb 7, 2024 13:37:06 GMT
I may have to get the sides and go that route. I contacted one of the guys through Shapeways and was basically brushed off. I don't do facebook for many reasons. So this is going to be a while.
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Post by harborbelt70 on Feb 7, 2024 17:07:28 GMT
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Post by jayhawk500 on Feb 8, 2024 19:19:51 GMT
What did you use for the chassis of the water tender? I'd like to have one if there not too terribly expensive.
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Post by harborbelt70 on Feb 8, 2024 20:13:37 GMT
What did you use for the chassis of the water tender? I'd like to have one if there not too terribly expensive.
And neither were the 3D printed tender shells. The maker still offers them via his Shapeways shop but the price (mainly because of the increase in cost of the printing material) has gone up by several multiples and is likely to put off anyone who is not a really dedicated UP Excursion Train fan. Go here to see it: www.shapeways.com/shops/JamesTrainParts?page%5Bnumber%5D=2&page%5Blimit%5D=48&page%5Border%5D=asc
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Post by jayhawk500 on Feb 9, 2024 13:22:58 GMT
Yeahhhh, Not doing that! But thank for the info.
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