Alco RS-2 short hood

This is very interesting.  I am getting educated on the differences between the RS-2 and RS-3.  For the purposes of the short hood, is the primary difference the elimination of the battery boxes on both sides, and the addition of the pair of full-length doors with proper louvers?  It also appears there are a couple of equipment boxes added to the cab base, which could be part of a new hood part, and one of them appears to have some equipment mounted to the top.  Still searching for better pictures.  Is there anything else dimensionally different from the RS-3 short hood?  Is the hood end door the same?

For 3D printing, it may be best to try to design the short-hood with the correct door, louvers and base boxes, and rely on brass detail parts for the door handles, lift rings, grab irons, headlight, sand filler, numberboards, etc.  This should work well within the limitations of 3D printing, and result in a superior part.

For the Weaver loco in specific, the short hood walkway would need the battery boxes removed.  Since the walkways have diamond tread molded in, that end of the loco might benefit from having the walkway sanded flat, and a new diamond tread applied from PSC for a uniform job across the model.

This could be a cool project.  I have an undec Weaver I'd be willing to try to turn into an Erie RS-2.  Right now I am working on another Shapeways job, but in the meantime if you have any drawings to share on RS-2's please send them my way so I cab get organized and put together an action plan.  As well, http://www.rr-fallenflags.org/ and http://www.rrpicturearchives.net/ have some great vintage photos, so I need to filter through them and save some of the better ones for reference.

Beyond the short hood, it seems the exhaust stack location is another primary difference on the units with air-cooled turbo's, which were later relocated when converted to water-cooled.  Many other details seemed to vary by RR.  One interesting thing I've notices on RS units is that the stepwells can be enclosed, or have one or two steps open-backed, with little rhyme or reason.  I am also trying to figure out if RS units included any type of step or ground/inspection lighting.

This might be a bad location for this post to see traffic, perhaps the 3RS or 2R forum would have some more interest.

Atlas had done an RS1.  Stack through the orange roof is for a steam generator, part of passenger service.   Pictured model, not for sale.

Thank you for the detailed picture.

Yes, each Alco RS-model seems to be it's own beast, and the different O-scale manufacturers also have their own takes on them.  Interestingly your own RS-1 seems to feature rivets, which do not appear on the RS-2 or 3.  I was not aware of that difference before.  I guess it's like the early GG-1's of the period, which also used riveted construction.