Should have remembered this one--New Hope & Ivyland's No. 40.  I don't have her specs, but she looks an awful lot like Sierra 24. . .

http://www.railpictures.net/viewphoto.php?id=159546&nseq=23

http://www.yesteryeardepot.com/SRR24.JPG

Some other examples;

Arcade & Aticca 14--basically a newer version of Bachmann's Ma & Pa 4-6-0:

http://donsdepot.donrossgroup.net/dr0106/aa14a.jpg

No. 18 of the A&A--an Alco counterpart to NH&I 40 and Sierra 24:

http://donsdepot.donrossgroup.net/dr1007/aa18a.jpg

One of the wonderful things about steam railroads is the variety of ways designers came up with to turn boiling water into tractive effort.  Unfortunately, it also probably drives model builders like Bachmann nuts in trying to figure out what to produce!

They may not look it, but everything in the last post on Sierra Railway and Staten Island Rapid Transit is standard gauge.  Says something about how small some of the older and specialized equipment could be.  Narrow gauge isn't always small either; D&RG's workhorse C-16 2-8-0s were as big as any standard gauge engine when they were built in the 1880s, and the EBT's larger 2-8-2s, Nos. 16, 17, and 18 (80 tons each) would have been right at home on many a standard gauge shortline had they been built to that width, also having 48" drivers--similar to those of logging 2-8-2s.  In fact, I only recently found out that the orginal Baldwin proposal for the EBT's big engines was to build them as 2-10-2s on three-foot gauge!  EBT's management got concerned about bending such an engine around their curves, which included at least one in a tunnel, and so a section of boiler was left out and a pair of drivers deleted.  Interesting to contemplate, though. . .

Now, I have to admit the EBT is a personal favorite, as  I am only 90 minutes travel from it, and it is a cool road loaded with authentic atmosphere, but this is, as stated, a standard gauge page.  I'm not suggesting this is something to make in HO scale, at least not unless we get hoppers to go with it.  And I don't need something else to spend too much money one. . .

Love to see some of these responses; wonder how much will either be produced, kitbashed, or scratchbuilt?

To continue with some other themes, we'll start with Sierra 3, and others, courtesy of Yesteryear Depot:

http://www.yesteryeardepot.com/SRR03BC.JPG

http://www.yesteryeardepot.com/SRR03A.JPG

No. 18 was Sierra's other "movie star," being used in "Dodge City," "Drums in the Deep South," and "Go West;" the last one is a Marx Brothers comedy with the craziest, wildest railroad chase sequence you're likely to see on film.  Oh, she and the other 2-8-0s have 42-inch drivers--close to those 44-inchers under the 0-6-0T:

http://www.yesteryeardepot.com/SRR18.JPG

http://www.yesteryeardepot.com/SRR20.JPG

http://www.yesteryeardepot.com/SRR20A.JPG

http://www.yesteryeardepot.com/SRR22.JPG

This one's different, with 50-inch drivers, a common switcher size, as under the USRA 0-6-0s and 0-8-0s made by Life Like (now Walthers), and Bachmann's own USRA 0-6-0 and the freelanced 2-6-2 that's based on it:

http://www.yesteryeardepot.com/SRR24.JPG

Just for inspiration, a touch for the other end:

http://www.yesteryeardepot.com/SRRC09.JPG

From the Golden West to the Gritty East--B&O subsidiary Staten Island Rapid Transit, with its camelbacks and Forneys, courtesy David Keller:

http://sbiii.com/d-keller/dklipix/sirt-s~2.jpg

http://sbiii.com/d-keller/dklipix/sirt-s~1.jpg

A Forney with a Wooten firebox and pilots fore and aft:

http://sbiii.com/d-keller/dklipix/sirt-t~1.jpg

As the Bach Man says, have fun.

You might find these useful.

http://www.friendsmodels.com/otherdesigns/312gaugeba466t.html

http://www.friendsmodels.com/images/007.pdf

The internet is amazing!  And even more so the early model railroaders, who often had so little to work with.

Actually, just looking for ideas that could help you get something you could want or use, even if the chances of it being commercially available are relatively slim.  This fellow apparently noted that a 2-6-2T resembles a 2-6-0 with an extra axle for a fuel bunker; this was also my observation about a 4-6-4T being based on a kitbash of a 4-6-0.  To see what I'm speaking of, take a look at the CNJ 4-6-4T again, and look where the firebox and cab are relative to the drivers; ditto for the Reading 2-6-4T.  Now, keep in mind that these would be relatively large examples of 4-6-0s and 2-6-0s, and the effect is exaggerated even more by the Wooten fireboxes of both engines, but that's where the axles and firebox are in relation to each other.  It may also be noted that the Reading engines were rebuilt as 2-6-0's when they were replaced by the electric MUs.  Even the B&M 4-6-6T has its firebox between the last two driving axles; the reference to it looking like a 4-6-4 is more in regard to its girth and general styling, not its steam-making proportions.

As to the On30 2-6-2T, to my eye the relative proportions of boiler and tanks to drivers and cylinders look similar to those of the standard gauge 2-6-2T of the CNJ.  I don't have driver and wheelbase figures for the two engines in front of me, but I wonder how close those key dimensions, and the boiler diameter, on the On30 model come to those of an HO 2-6-2T?  (Remember the track gauge is the same.)  If they are fairly close, you could then substitute or scratchbuild a new HO cab and other detail parts, such as domes, headlights, and air compressors, and get yourself something like the CNJ engine.  It would be the reverse of what HOn30 and On30 modelers used to do for years--take an N-scale or HO-scale engine, remove domes and cabs, and substitute their larger-scale counterparts.  This was very much a freelancer approach to things, and sometimes the proportions didn't quite work out (one modeler, attempting to use N-scale 2-8-2's to attempt HOn30 engines similar to those of the EBT's, but boiler and driver sizes were too small), but this is still a possible approach to get something that isn't available otherwise. 

It's just meant as a way to look for possibilities, similar to my original suggestion earlier in this thread, that rod loggers could be a potential area for Bachmann to explore (and exploit) because of a common driver diameter, with a matching motor and gearbox.  I would assume these are some of the more expensive parts of a model to tool for because of their working tolerances; with tooling costs for a new engine reportedly being in the $250,000 range, it's not a bad idea to see what you can use that's already in the parts bin.

PS--I do have to ask what you have for a layout.  As I noted above, the inquiry about specialized commuter engines suggests you have an interest in this style of railroading, and it's not something everybody does!  You may well have a unique and different layout, which is more than I have (I haven't even had the time for a new test track since a move fairly recently).  Can you  tell us something about it?  It might be pretty neat!

And yes, while I'm a strong Pocahontas coal road fan, I like anything with a firebox on one end and a stack on the other!

"Proper locomotives are painted black and burn West Virginia coal!"

Speak of the devil!  On30, but it looks a lot like that CNJ 2-6-2 T.

http://modelrailroading.wordpress.com/2008/04/11/on30-project-rodgers-2-6-2t/

Glad to see plenty of the steam fraternity here!  To paraphrase Thomas the Tank Engine, "Proper locomotives are painted black and burn West Virginia coal!"

Not likely to be produced, but possibly simple enough to kitbash or scratchbuild--more CNJ commuter power:

http://www.northeast.railfan.net/images/tr_cnj201.jpg

http://www.northeast.railfan.net/images/cnj200sa.jpg

Note that there is a pilot visible at the rear of this one; actually, a common application on such locomotives, including tender engines in bidirectional service.

http://www.northeast.railfan.net/images/cnj224s.jpg

CNJ 4-6-4T; overall proportions suggest a kitbash could start with a 4-6-0:

http://www.northeast.railfan.net/images/cnj225sa.jpg

http://www.northeast.railfan.net/images/cnj229s.jpg

Photos above came from this site; loading is slow but it's a good one for engine photos of all types from the East (and a few others, as well).

http://www.northeast.railfan.net/home.html

This one, from the Reading, was once available in N scale.  The prototypes were replaced by electric MU cars in the 1930s.

http://www.northeast.railfan.net/images/pr381.jpg

http://photoswest.org/cgi-bin/imager?00014505

ebtnut likes early stock Baldwin 2-8-0s; here is one of the Ma &Pa engines he mentioned, although it is no longer so stock.  Wonder what it would take to get the Athearn-MDC engine to look like this:

http://www.uncle-joey.com/YorkMail/roster/roster_engine_23.jpg

Another road with a lot of Baldwin 2-8-0s (and a few 4-4-0s), from a website that, like the BC&G site, could have a lot of inspiration for the modeler:

http://wayneshobbies.tripod.com/huntingdonbroadtop.htm

http://www.bbandbrr.com/hbtm/

http://www.bbandbrr.com/everett/index.aspx

A road that finished out with Baldwin 2-8-0s purchased second hand from the West Virginia Northern; both of the last two engines have survived, and are now under restoration at the West Virginia Railway Museum in Elkins, W.Va.

http://davecathell.tripod.com/preart.html

http://www.wvrailmuseum.com/

Another shortline in West Virginia, connected with the C&O; had, in steam, a pair of 2-8-0's purchased second-hand from the C&O and the NKP.

http://www.gottrains.com/winifrede/index.htm

http://www.gottrains.com/winifrede/photos/10-04.jpg

http://www.gottrains.com/winifrede/photos/winfrede-03.jpg

http://www.coalcampusa.com/sowv/kanawha/kanmisc/kanmisc.htm

Have fun. . .

One could make the case for a variety of 2-8-0s, ranging from small 19th century design engines like the PRR H3 and the stock small 2-8-0s used by the Ma &Pa (and the closest available model being the Athearn-MDC 2-8-0).  My choice would be a combination of a PRR H-6-sb and a C&O G-7/9.  Both of these engines had 57" drivers and a driver axle spacing that had a slightly longer distance between the first and second axles (originally to accommodate the rocker shaft from Stephenson valve gear), a minimal spacing between the second and third axles, and a longer spacing between the third and fourth for the firebox.  Both engine series were in the 100-ton range, and the C&O engine seems to have become the basis of a stock Alco locomotive used by a number of roads, among them a West Virginia shortline called the Kellys Creek & Northwestern.  This engine, their No. 6, would be sold to another road, the Buffalo Creek & Gauley, where it became that road's No. 13.  That engine is still with us, and ran in tourist service until just a few years ago on the Ohio Central. 

This is a neat site on the BC&G:

http://www.buffalocreekandgauley.com/

The left-side view below illustrates the driver axle spacing mentioned above:

http://www.buffalocreekandgauley.com/LOCOMOTIVES/No13/Loco13.html

A C&O G7, from the image gallery of the C&OHS; this engine illustrates a rebuilt version with a short, "sports model" cab:

http://www.cohs.org/repository/Archives/cohs/web/cohs-23890.jpg

A G9, still with its original cab:

http://www.cohs.org/repository/Archives/cohs/web/cohs-23910.jpg

Not shown are some 2-8-0s that got the tender Bachmann is bringing out with the H-4 2-6-6-2.

For comparison, a PRR H6:

http://www.biocrawler.com/w/images/5/5d/PRR_H6b_2837.jpg

http://www.biocrawler.com/w/images/1/1a/PRR_H6b_7758.jpg

Back to the BC&G; check out those Baldwin domes on No. 4.  And the tender, as shown in a photo when the engine was new, not only looks sharp in its Baldwin factory striping, but also looks very similar to some Pennsy tanks.  More possible ways to save on tooling costs, and prototypical, too!

http://www.buffalocreekandgauley.com/LOCOMOTIVES/NO4/Loco4.html

Want a prototype for kitbashing your Life-Like 0-8-0 to a 2-8-0?  BC&G had one. . .

http://www.buffalocreekandgauley.com/LOCOMOTIVES/No14/Loco14.html

The comments about 4-6-4T, 2-6-4T, and other commuter tank engines suggests someone is interested in modeling Eastern commuter services.  I can picture a very interesting layout based on this theme, featuring a big waterfront terminal with connecting ferryboats and lots of switches, including multiple double-slips.  Talk about intensive operation!  Coaches would rival freight cars in numbers on a layout like that.  And depending on the prototype, plenty of Camelbacks on the job, along with light and heavy 4-6-2s.

http://abpr.railfan.net/abprphoto.cgi?//march99/03-26-99/crd90597.jpg

http://www.trainutz.com/CNJ460camel.jpg

Canadian commuter power; I think CNJ had something similar:

http://www.flickr.com/photos/trainplanepro/3599618922/

http://www.divisionpoint.com/CNR_X10.html

Check out this bruiser 4-6-6T on the B&A, with its visible kinship to NYC's 4-6-4s:

http://cs.trains.com/trccs/themes/trc/common/viewimage.aspx?img=http://i64.photobucket.com/albums/h182/CNJ831/BA466T.jpg&w=675&h=406

I've got to get off this Internet thing and work on a layout!

Speaking of the Constitution:

http://rypn.sunserver.com/forum/viewtopic.php?f=1&t=28923

http://ogaugerr.infopop.cc/eve/forums/a/tpc/f/46660482/m/149109043

One could make the case for a variety of 2-8-0s; my choice would be a combination of a PRR H-6-sb and a C&O G-7/9.  Both of these engines had 57" drivers and a driver axle spacing that had a slightly longer distance between the first and second axles (originally to accommodate the rocker shaft from Stephenson valve gear), a minimal spacing between the second and third axles, and a longer spacing between the third and fourth for the firebox.  Both engine series were in the 100-ton range, and the C&O engine seems to have become the basis of a stock Alco locomotive used by a number of roads, among them a West Virginia shortline called the Kellys Creek & Northwestern.  This engine, their No. 6, would be sold to another road, the Buffalo Creek & Gauley, where it became that road's No. 13.  That engine is still with us, and ran in tourist service until just a few years ago on the Ohio Central. 

This is a neat site on the BC&G:

http://www.buffalocreekandgauley.com/

The left-side view below illustrates the driver axle spacing mentioned above:

http://www.buffalocreekandgauley.com/LOCOMOTIVES/No13/Loco13.html

A C&O G7, from the image gallery of the C&OHS; this engine illustrates a rebuilt version with a short, "sports model" cab:

http://www.cohs.org/repository/Archives/cohs/web/cohs-23890.jpg

A G9, still with its original cab:

http://www.cohs.org/repository/Archives/cohs/web/cohs-23910.jpg

Not shown are some 2-8-0s that got the tender Bachmann is bringing out with the H-4 2-6-6-2.

For comparison, a PRR H6:

http://www.biocrawler.com/w/images/5/5d/PRR_H6b_2837.jpg

http://www.biocrawler.com/w/images/1/1a/PRR_H6b_7758.jpg

In regard to rod logging engines, I forgot to mention the tank engine variants.  Again, like the tender locomotives, these often used drivers in the 44 to 48 inch range, suggesting some parts (such as wheels, motors, gears) from the 0-6-0T that could be used to reduce tooling costs.

Some examples:

http://www.ncry.org/roster/s_02/q2builder.shtml

http://www.ncry.org/roster/s_03rd/rd3.shtml

Tank Mallet variation:

http://www.ncry.org/roster/s_04/cv4.shtml

Logging Mallet page; great reference!

http://loggingmallets.railfan.net/

One that runs:

http://www.1880train.com/

A large 2-8-2 tank; believe it or not, this same company rostered a similar-looking 2-10-2T!

http://www.sdrm.org/roster/steam/s-11/index.html

An HO brass model, very typical Baldwin prototype:

http://www.victorianweb.org/cv/models/glanville/locos/9.html

http://www.victorianweb.org/cv/models/glanville/locos/9b.html

Other stuff:

http://www.railroadpix.com/rrphotos/detail/551.html

http://www.railroadpix.com/rrphotos/detail/549.html

Another variant of the Baldwin logging 2-8-2:

http://www.orcorail.org/Locomotive_104.html

http://loggingmallets.railfan.net/oregon/oregon.htm

Vintage movie footage of rod loggers in action (commercial video preview); one of the engines shown is the famous (former) Sierra Railway 38:

http://www.youtube.com/watch?v=mmniR8ziNOc

Another commercial video trailer--but it still looks good, and explains part of what we like about short lines and loggers:

http://www.youtube.com/watch?v=dzKnDZSP1mo

Enjoy!

Athearn once made a model of just that very Boston & Maine engine; the prototypes were a bit unusual for being built by Lima in 1937 (late for a 4-6-2 in the United States), and were intended as dual service engines.  I believe they also carried names in their glory days.

If I were at Athearn, I would also consider making models of C&O F-18s and F-19s and Southern Ps-4s on this USRA light 4-6-2 mechanism.  The reason for this is that all of these engines shared a 73-inch or so driver size, and in the case of the PS-4, the same overall wheelbase.  All carried Baker valve gear (although the Southern engines would be converted to Walscharts by the late 1930s), and most of the Southern engines used tenders similar to Bachmann's (and Athearn's) USRA tenders.  The C&O engines carried a number of different tenders over the years, but the F-19s are best remembered for pulling a long Vanderbilt tank in the 1930s, which happens to be the same one Bachmann makes to go with the C&O J-2.  If these engines were to come out, I wonder if Athearn would be interested in buying tenders to avoid some tooling costs; it seems to be something that could make sense.  It would be prototypical, too; Lima built a number of replacement tenders over the years for different roads, and built the tenders for the Pittsburgh & Lake Erie's last 2-8-4s.  (Alco built the engines, but had to contract out the tenders to Lima; the tender shop was being used to build Diesels.)

http://www.srha.net/public/photos/photo_detail.asp?ID=30051

http://www.srha.net/public/photos/photo_detail.asp?ID=51513

Check out the smoke duct on this one, for running in the tunnels of the "Rat Hole Division:"

http://www.srha.net/public/photos/photo_detail.asp?ID=25669

C&O F-19s, ca. 1930:

http://www.columbusrailroads.com/photogallery-4/COHS-3796-1200.jpg

http://www.columbusrailroads.com/photogallery-4/COHS-5187-1200.jpg

Have fun.

As a fan of the C&O as it was in the postwar Superpower era (before Diesels and blue and yellow paint), I lean toward the big engines.  But that doesn't mean there isn't a market for smaller power.

One additional engine could come from Bachmann's current production.  This is the Shay, which could also pass for Sierra Railway No. 12.  This engine was later sold to Standard Lumber Co., and later to Pickering Lumber.  It's still around, in a safety-orange paint scheme at that!

http://www.ncry.org/roster/s_12/srr12.shtml

Baldwin and Alco rod loggers would also be something that might be considered.  These 2-8-2's and 2-6-2's typically had 48" drivers--which, if I measured the model correctly, happens to be close to the size used under the 0-6-0T, which I believe has 44's.

http://www.trainweb.org/mccloudrails/LocoImages/Loco-0016-2.html

http://www.trainweb.org/mccloudrails/LocoImages/Loco-0018.html

http://www.trainweb.org/mccloudrails/LocoImages/Loco-0010.html

http://www.trainweb.org/mccloudrails/LocoImages/Loco-0021.html

http://www.trainweb.org/mccloudrails/LocoImages/Loco-0025.html

http://www.tidewatersouthern.com/contents/motivepower/steam/Baldwin_2-6-2_132/baldwin_2-6-2_132.htm

http://www.tidewatersouthern.com/contents/motivepower/steam/Baldwin_2-6-2_132/Sierra32Jamestown1/sierra32jamestown1.htm

http://www.railpictures.net/viewphoto.php?id=312694&nseq=0

http://www.railpictures.net/viewphoto.php?id=170780&nseq=0

One of the interesting things to note is the collection of subtle differences between Alco and Baldwin engines, most notably in domes.  This applied to narrow gauge power as well, illustrated here with engines from the East Broad Top (Baldwin) and the Sumpter Valley (Alco).

http://www.railpictures.net/viewphoto.php?id=305965&nseq=6

http://www.railpictures.net/viewphoto.php?id=300061&nseq=37

http://www.railpictures.net/viewphoto.php?id=81311&nseq=19

http://www.railpictures.net/viewphoto.php?id=81132&nseq=21

http://www.railpictures.net/viewphoto.php?id=286081&nseq=2

http://www.railpictures.net/viewphoto.php?id=221440&nseq=4

Domes are fatter, but they are still Baldwin domes on this modern, post-war 2-8-2 on the White Pass & Yukon in Alaska:

http://www.railpictures.net/viewphoto.php?id=297785&nseq=9

http://www.railpictures.net/viewphoto.php?id=128925&nseq=75

Enjoy.

Interestingly, both engines have much of what would be needed in current Bachmann and BLI lines.  The principle requirement for both engines would be a new superstructure.  The Ja, based on a current J mechanism, would also require a set of slab rods; the current J tender could be used.  The streamlined K-2 would require the superstructure, and possibly a new cylinder block, all based on the USRA heavy 4-8-2.  A new tank, similar to that of the J but with rivets, would also be needed.  Would it be possible for Bachmann to buy N&W Y-6b or A tanks from BLI?  This would cut down on initial tooling costs.

Of the two, I would be inclined to pick the streamlined K-2.  The unstreamlined Ja only ran in that configuration for 3 or 4 years during WWII, and got streamlining and roller rods right after the war.  The K-2s were rebuilt around 1947 or so, and ran that way until the end of their operations in about 1957.

Of course, the 4-8-0 has the marketing advantage of being a "contemporary" (currently visible and running) engine; it's also one that N&W fans can use multiple examples of.  The Strasburg's engine is even currently coupled to an original N&W K-2 tender, which Bachmann currently makes.  The disadvantage is that it hasn't been made before, which means more tooling costs. 

I'll let Bachmann's management make the choice.

Going back to look at the NdeM post, I noticed that the first slide show was a response to something else.  That something else was a broad-gauge Spanish 2-8-2, being prepared for an excursion at a roundhouse.  What stood out was the sound of the turntable--whining and rattling like the one that used to be in Hagerstown, Md., or the one the late O. Winston Link recorded at Bristol, Va.

http://www.youtube.com/watch?v=UW_UZy6ZGOs&feature=video_response

Considering all that is being done in sound, I have to ask if anybody has done or considered this yet--or will, now that the subject has been brought up?

Other tables, in America. . .

http://www.youtube.com/watch?v=ziRTAn2oiLs

The Western Maryland's table at Frostburg, Md., sounds like a noisy trolley car, suggesting a possible sound source.

http://www.youtube.com/watch?v=oxYPjKr2dyA

UP 844 at Cheyenne, Wy.

http://www.youtube.com/watch?v=jFCtmw0IvyA&feature=related

Of course, we can't leave the diesel fans out--UP Centennial 6936, also at Cheyenne--whine, whine, runk, whine, runk, runk, whine, runk--listen to those gears in the "tractor" (turntable drive).

http://www.youtube.com/watch?v=ccFNgyQIrPg

An air-operated turntable tractor on the Texas State Railroad.

http://www.youtube.com/watch?v=J7jMiIPxbdQ

Sound isn't a problem with this one, but how do you realistically model the "tractor?"

http://www.youtube.com/watch?v=Ip3EcJCyj5g

Have fun.

Below are some links I came across on YouTube.  I'm afraid I don't know Spanish, but it looks like Bachmann has a satisfied customer (and a fine modeler) south of the border.

Enjoy.

http://www.youtube.com/watch?v=2EPf45XgQQI&feature=channel

http://www.youtube.com/watch?v=mc5tmzU3ULU&feature=channel

http://www.youtube.com/watch?v=FCmCAGz_R2U&feature=channel

http://www.youtube.com/watch?v=ByO9ye2lT0I&feature=channel