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4-6-0 vs. 2-6-0

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Posted by doctorwayne on Monday, March 7, 2022 2:34 AM

A few minutes ago, I decided to see what one of my Bachmann 10 Wheelers could do with a train.  On level track, it could manage 16 cars  (I had 17 cars on it originally, but one was a half-pound baggage car, which proved to be too much).
The loco and tender tipped the scales at 19oz.

I also backed the 17 car train partway down the 2.9% grade, but even two locos couldn't move it uphill.

Wayne

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Posted by doctorwayne on Monday, February 28, 2022 3:10 PM

Thanks for your kind comment, Simon.

I have added all-wheel current collectors on some of my locomotives, especially if the original set-up isn't reliable...

This 0-6-0, on loan from a friend, wasn't a very reliable runner, so I decided to equip it with all-wheel pick-up.  The loco...

...and the tender...

...and a view of the whole shebang...

I haven't added any weight to it, as he may want it back as-is.  I'm hoping to buy it, though, so that I can convert it into a TH&B switcher.

While my friend does not have an operating layout, he does have a layout of considerable size.  When he moved from nearby Hamilton 10 or 15 years ago, to a ranch in the Rockies in British Columbia, he took his layout with him...as best I can recall, it consisted of 12 4'x8' sheets of plywood, set-up in what I would call an exaggerated boxed-in "E" - four sheets with the long sides parallel, forming three operating "pits" between them, and another four sheets at right angles to those. on each side.  Access to the pits was a scramble under the table.  Here's a sketch, (no trackplan) as I remember it...

Operations were from the pit at right, while the others were mostly access points for layout work or maintenance.  It occupied pretty-well all of the basement, except for his stereo equipment.

The layout was dis-assembled and crated, and went west in one of his trailers, formerly used for carrying race cars. 
When I spoke with him just before Christmas, he was thinking seriously about reviving the layout (it's well-protected in a fully enclosed outbuilding), which would require building a second floor in his A-frame home.

His wife is also a model railroader, and has done much of the scenery and painting of structures and details, too.

If that happens, I'll likely be driving out there to take his loco back...looking forward to that adventure.

EDIT:  I forgot to mention that operation on that layout was rather impressive, usually with four or five trains in motion at the same time, most with multiple locomotives (steam and diesel), and long-ish trains...all running on DC power.

Wayne

 

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Posted by snjroy on Monday, February 28, 2022 9:50 AM

A really sweet looking loco Wayne... I'm guessing you added extra weight for better performance? And extra power pickup on some of the wheels?

I have an old MDC 2-6-0 unbuilt kit on my shelf. I just might tackle that one soon!

Simon

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Posted by BEAUSABRE on Monday, February 28, 2022 9:45 AM

I'll give you two hundred....rubles

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Posted by doctorwayne on Sunday, February 27, 2022 7:39 PM

BEAUSABRE

That looks pretty much exactly like those two IHC Moguls that I bought, many years ago, at Hobbies For Men, for ten or twelve bucks apiece. I've remotored mine and re-detailed it, too.  It's a much better loco than it was when I first bought it.

If that person's asking price is $91.00, my re-worked version...

....should be worth at least a couple hundred...there's gotta be more than a few gullible purchasers around.

Wayne

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Posted by BEAUSABRE on Sunday, February 27, 2022 4:11 PM

Here's sometging you might want to consider

HO MEHANO TRAIN LINE BALTIMORE & OHIO DCC READY 2-6-0 MOGUL #M 533 | eBay

 

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Posted by crossthedog on Thursday, February 24, 2022 6:00 PM

BEAUSABRE
If it doesn't have photos, pick a railroad, then do an image search using "Name of Railroad 2-6-2"

Thank you. Very useful links. I like those low-rider 2-6-2s. Something to consider as a Shay alternative if I ever find room/time/$ for a logging line.

Returning to model railroading after 40 years and taking unconscionable liberties with the SP&S, Northern Pacific and Great Northern roads in the '40s and '50s.

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Posted by snjroy on Thursday, February 24, 2022 5:58 PM

Mantua made a 2-6-2 that was similar to the ones Baldwin made for the logging industry. With rubber tires. With some fine tuning, they can be fine runners.

Simon

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Posted by BEAUSABRE on Thursday, February 24, 2022 5:45 PM

Your wish is my command, my little swamp turnip. We'll start with logger McCloud River, which had no less than eleven of the beasts

McCloud River 2-6-2 "Prairie" Locomotives in the USA (steamlocomotive.com)

Bonhommie and Hattiesburg Southern

bhs250a.jpg (900×675) (hawkinsrails.net)

Klondike Mines

km4-gueller.jpg (1070×520) (steamlocomotive.com)

Red River and Gulf

rrg-15.jpg (400×196) (msrailroads.com)

Eureka-Nevada

RAILROAD PRINT EUREKA NEVADA Ry 2-6-2 STEAM LOCOTIVE #7 | eBay

Sierra Railway

Sierra-Railway-30.jpg (900×544) (ncry.org)

Here's the mother load, technical descriptions, some photos, just pick the railroad you never heard of and you'll probably find locos meeting this description (Locobase is a great reference)

2-6-2 "Prairie" Locomotives in the USA (steamlocomotive.com)

If it doesn't have photos, pick a railroad, then do an image search using "Name of Railroad 2-6-2"

 

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Posted by crossthedog on Thursday, February 24, 2022 4:16 PM

BEAUSABRE
By, the way, there was a seperate group of 2-6-2's that was built for short lines and industrial users such as loggers. Here, the advantage wasn't the wide firebox, but that the rear truck helped guide the locomotive when running backwards on what was often pretty sketchy track.

Ah....excuse me, Beau? I'm VERY interested in this. What is this separate 2-6-2 group of which you speak? Can you hook me up with a link to some info, photos?

Thanks,

-Matt

Returning to model railroading after 40 years and taking unconscionable liberties with the SP&S, Northern Pacific and Great Northern roads in the '40s and '50s.

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Posted by BEAUSABRE on Thursday, February 24, 2022 9:29 AM

The PRR's 2-6-0's (Class F) were used as fast freight engines at a time when regular freights were powered by 2-8-0's (Class H) and passengers by 4-4-0's (Class D) and 4-4-2's (Class E). It found high drivered 2-6-2's (original Class J) to be unstable at high speed and went with 4-6-2's (Class K) for 6 coupled passenger power.

The Class F locos were gone by the Thirties, the Class D's had their drivers (80 inch) replaced by smaller diameter ones (68 inch) to become branch line dual purpose locos - see the D16sb at RR Museum of PA, the Class E's (except for the E6s, which had the power of a light Pacific) became secondary line engines, early 2-8-0's such as H6 were demoted to way freight and switcher duty (Despite its heavy traffic, the PRR had only 90 0-8-0's (Class C) which were not well liked due to the damage they inflicted on track) followed by the H8, H9 and H10 classes as they were replaced by Mikado's. 

The MILW Prairies were a different breed than the high drivered speed demons of the PRR and LS&MS (NYC). First, as a type, the 2-6-2's were the first engines to use a trailing truck to support a large firebox, behind the drivers. This was to be copied by virtually all future road locomotives as it resulted in a free steaming boiler that produced plenty of steam. In addition the combination of low (63 inch) and moderate (69 inch) drivers clearly marked them as freight or dual purpose machines. Last, the MILW engines had their driving rods connected to the third set of drivers. This made for a comparatively stable loco, those 2-6-2's with the rods connected to the second pair were right at the center of rotation of the locomotive, which caused them to yaw (a problem also on center connected 2-10-2's or any center connected symetrical wheel arrangement). Essentially, the MILW engines and its contemporaries had everything a modern engine had - except power. They enjoyed a brief moment of glory as mainline freighters, but were replaced by Mikado's from about 1910 on (commonly thought to be a Consolidation with a trailing truck, it might be better to think of Mikes as Prairies with an extra set of drivers). The low and moderate drivered, rear connected machines then settled down to long and productive careers as branch line, way freight and switching locomotives

By, the way, there was a seperate group of 2-6-2's that was built for short lines and industrial users such as loggers. Here, the advantage wasn't the wide firebox, but that the rear truck helped guide the locomotive when running backwards on what was often pretty sketchy track.

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Posted by snjroy on Thursday, February 24, 2022 9:04 AM

John-NYBW

 

 
SeeYou190
 
snjroy
The Athearn models have traction tires that will help you get through the grades (2.5% is not insignificant for a steamer).

 

This is my biggest concern with this scenario. A 2-6-0 or 4-6-0 might have significant trouble pulling a train, even a short one, up a 2.5% grade.

Old metal boilers, like Wayne used, will help.

Are you willing to do that kind of work? If not, using 2-8-0s might be a better option.

This one can be found reasonable on eBay. It looks like it would be right at home on a 1930s short line. Converting it to DCC would be challenging if that is how you are operating.

-Photograph by Kevin Parson

-Kevin

 

 

 

 

I haven't pushed it to 2.5% but parts of my shortline have a 2% grade and my Bachmann 4-6-0 has no trouble hauling 7 cars up the steepest parts. I haven't pressed it beyond that but based on how easily it can handle 7 cars, I see no reason to think it would balk at 10. I'm sure there is a limit but there just aren't enough customers on the shortline to require more than that. 

 

My PFM 4-6-0 is a poor puller. I improved it by adding some weight, but it still does not match my MDC 4-6-0 pulling abilities. So I double-head them, with the PFM placed upfront to highlight its details. But the MDC does most of the work!

Simon

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Posted by John-NYBW on Thursday, February 24, 2022 8:33 AM

dehusman

My Bachmann 4-6-0's stall out with 10 cars on a 2% grade.

 

Maybe I'll have to try it to find out the limit on mine. So far seven is the most I've ever needed to take up the grade at a time. There are only 8 customers on my shortline and 4 of them are reached before the steepest part of the grade. It has taken 7 cars over the summit with no problem at all. 

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Posted by dehusman on Thursday, February 24, 2022 6:32 AM

My Bachmann 4-6-0's stall out with 10 cars on a 2% grade.

Dave H. Painted side goes up. My website : wnbranch.com

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Posted by John-NYBW on Thursday, February 24, 2022 5:47 AM

MidlandMike

Just to add to the previous post, the U&D used those 4-6-0s to pull coal trains over their 3% grades.

 

I'll have to dig up my book on the U&D. It's been at least ten years since I last read it and I'm a little fuzzy on some of the details. I knew they went over the Catskills but I'd forgotten about the 3% grades. I do remember in the waning years they had issues with their track maintenance. 

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Posted by SeeYou190 on Wednesday, February 23, 2022 10:05 PM

John-NYBW
Parts of my shortline have a 2% grade and my Bachmann 4-6-0 has no trouble hauling 7 cars up the steepest parts.

Good to hear the Bachmann 4-6-0 is so capable.

I have no experience with that locomotive, so I had no idea.

-Kevin

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Posted by MidlandMike on Wednesday, February 23, 2022 9:44 PM

Just to add to the previous post, the U&D used those 4-6-0s to pull coal trains over their 3% grades.

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Posted by John-NYBW on Wednesday, February 23, 2022 6:31 PM

The Ulster and Delaware RR, which my shortline is loosely based on, was nicknamed the Up and Down as it ran from Kingston Point on the Hudson, through and over the Catskills to Oneonta, NY, its western terminus. Their 4-6-0s were able to handle the traffic up those grades during the first part of the 20th Century. That was the reason I selected 4-6-0s to do the same on my shortline. 

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Posted by dknelson on Wednesday, February 23, 2022 4:05 PM

One big factor is, what did your prototype (if any) do?  The C&NW for example was a big believer in 4-6-0s and used them for a wide variety of service - local freights, mixed trains, branch line passenger service, switching, right to the end of steam in the mid 1950s.  If the CNW had Moguls it must have been back in the 19th century.  

The Southern Pacific had 4-6-0s but was a big believer in Moguls even after that wheel arrangement was considered out of date by other railroads,  and had many classes of them, rather high drivered at that, and used them right to the end of steam in the '50s.  

The Milwaukee Road was a big believer in Prairies -- 2-6-2s -- again running them in quantity even after the Prairie type was considered obsolete on most other railroads.  

While ten-wheelers are often described as dual service locomotives, on the Pennsy in the 20th century 4-6-0s were commuter train passenger locomotives.  While the Pennsy had had 2-6-0s and 2-6-2s, they didn't last deep into the 20th century.  The Pennsy had a vast roster of 2-8-0s that they used for a variety of services, including switching but also local freight and now and then one sees photos of Consolidations in slower speed passenger service.

And then there is the Hoopole, Yorktown & Tampico in Illinois that used an elderly ex-Burlington 0-6-0 for freight and passenger service, because it was their only locomotive!

For a 1930s (read .... "broke") short line, don't forget the Ma & Pa which used its 4-4-0s `for a long time to the delight of railfans.  But as another poster mentioned, if you really intend to model 2.5% grades, and if no particular prototype is being modeled, I'd say whatever small steamer can handle that grade should control, and you'd be safe knowing that somewhere, even on Class 1s, just about any wheel arrangement has a prototype. 

Dave Nelson 

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Posted by John-NYBW on Wednesday, February 23, 2022 3:25 PM

SeeYou190
 
snjroy
The Athearn models have traction tires that will help you get through the grades (2.5% is not insignificant for a steamer).

 

This is my biggest concern with this scenario. A 2-6-0 or 4-6-0 might have significant trouble pulling a train, even a short one, up a 2.5% grade.

Old metal boilers, like Wayne used, will help.

Are you willing to do that kind of work? If not, using 2-8-0s might be a better option.

This one can be found reasonable on eBay. It looks like it would be right at home on a 1930s short line. Converting it to DCC would be challenging if that is how you are operating.

-Photograph by Kevin Parson

-Kevin

 

 

I haven't pushed it to 2.5% but parts of my shortline have a 2% grade and my Bachmann 4-6-0 has no trouble hauling 7 cars up the steepest parts. I haven't pressed it beyond that but based on how easily it can handle 7 cars, I see no reason to think it would balk at 10. I'm sure there is a limit but there just aren't enough customers on the shortline to require more than that. 

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Posted by SeeYou190 on Wednesday, February 23, 2022 11:05 AM

snjroy
The Athearn models have traction tires that will help you get through the grades (2.5% is not insignificant for a steamer).

This is my biggest concern with this scenario. A 2-6-0 or 4-6-0 might have significant trouble pulling a train, even a short one, up a 2.5% grade.

Old metal boilers, like Wayne used, will help.

Are you willing to do that kind of work? If not, using 2-8-0s might be a better option.

This one can be found reasonable on eBay. It looks like it would be right at home on a 1930s short line. Converting it to DCC would be challenging if that is how you are operating.

-Photograph by Kevin Parson

-Kevin

 

Living the dream.

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Posted by dstarr on Wednesday, February 23, 2022 9:56 AM

Every kid (1950s and earlier) used to know that passenger locomotives had four wheel pilot trucks and freight locomotives had two wheel pilot trucks.  As early as 1895 passenger trains were doing 100 mph (at least where the track was good).  Freight trains seldom exceeded 30 mph.  The higher speed required more weight on the pilot truck to lead the locomotive into curves and turnouts, and to dampen the side to side motion from the pistons.  The greater weight required four wheels to carry it.  The freight locomotives required much less weight on the pilot, they put all the weight they could on the drivers.  So freight locomotives worked just fine with a two wheel pilot.  Hence the recognition feature for small boy train fans. Back in the day all small boys were train fans. 

They could, and often did, use passenger engines to pull freight trains.  It didn't bother the passenger engine to run at 30 mph.  Less often they would use freight engines to pull passenger trains.  Plenty of commuter routes and other routes were limited to 30 mph.  In the old days Mom would drive over to the Wayland train station to pick up Dad off the B&M commuter train.  Us kids usually came too.  That commuter train was very often pulled by a B15 Mogul. 

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Posted by John-NYBW on Tuesday, February 22, 2022 10:38 AM

I based my shortline loosely on the Ulster and Delaware RR which was absorbed by the New York Central in 1932. It used the Ten Wheelers as their primary motive power as do I.  My shortline remained solvent and independent in 1956 when my layout is set. 

Ulster and Delaware Railroad - Wikipedia

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Posted by Overmod on Tuesday, February 22, 2022 9:56 AM

wrench567
A short line railroad would probably not spend too much on heavy rail and deep ballast mainlines capable of high speed tonnage. Saving the maintenance of another axle and going all 2-6-0 locomotives would suffice. 62 inch drivers for the heavy loads and drag freights with 72 inch or more for the passenger runs.

Just my thoughts.

They are interesting thoughts.

Most railfans associate higher drivers with 'diameter speed' and faster operation.  But that is not the only reason for using comparatively tall drivers with comparatively short stroke -- which in the United States was a common formula for high speed, sometimes taken to comical extremes as in the PRR T1.

One of the great European designers, Karl Golsdorf, designed an express locomotive for what we would consider laughably tiny axle loading -- below even what we'd consider self-respecting branch lines (but with attentive geometry maintenance by their equivalent of sectionmen).  This had a two-wheel lead truck, and very tall drivers with short stroke precisely to limit augment at normal speeds on the light rail.  He had a large firebox and boiler, supported by a four-wheel trailing truck (to produce what looks like an insane 2-6-4, a Pacific turned backward, with the trucks doing the opposite of what we considered typical North American practice) -- these engines ran long, and well, and one of them is currently restored to operation!

So in practice you might well see high 60 to low 70s driver diameter in branch service...if you weren't using obsolete 'mainline' power from decades ago as hand-me-downs to operate the branch.  If you had a savvy shop that did much of its own work (like casting driver centers) you could easily pattern for shorter stroke, right down to where the critical dimension is the web between the axle and the main pin (as it is on the T1s) and leave the valve gear with long lap and long travel but reduce the ports and fixed cutoff and use Weiss/slot ports (which don't show on a model) for better starting.

Incidentally, you will want to look up the patent and operating premise of the Wagner throttle circa 1912 or 1913.  This was among the first successful uses of fluidic amplification, and makes a very responsive throttle all the way down to pilot opening something possible for a typical grapevine linkage, even at substantial opening throttle pressure.  It would be comparatively easy to incorporate a subsidiary drifting/starting throttle concentric with the main throttle spool, which would make driving the thing easy under any conditions, and simplify any issues that might arise with slipping or spinning.  This might show on the outside as a balanced linkage, and in the '40s or later would be a 'natural' for one of the commercial air throttles...

NOW let's have some fun and look at how a branch line might be run with these.

We might assume some comparatively small things, for example that the 'free good roads' movement did not catch on in our area (so trucking or buses are not competitive, and automobile use for even medium distance is troublesome) and that our 'connecting' railroad is running expedited freight on the Speed Witch model (that train, its 3 'sisters' on other Northeast railroads, and the CNJ Bullet are examples of 1931-era responses to the Depression), with quick and effective crossdock to LCL on the branch trains.

You have a combine with a baggage section (equipped with cranes and hoists for lowering heavy packages to trackside quickly and effectively) and a 30' RPO, which gives presorting not only for mail coming from outside, but between communities.  Express is handled via REA both to and from the local stations, and again the service is same-day coming and going for the communities, and not 'that' much longer for the stations served by the connecting train.  All this without need for an effective surcharge over normal postal and express rates.

Depending upon branch length, I'd provide a parlor car with at least 'buffet' service, as well as good coaches.  You can have some fun with using higher-speed trucks on the passenger stock (you can't copy Nystrom, but you could learn from his example to optimize ride quality for your speed range) and use passenger braking.

The question with mixed trains then comes down to interchange stock that is compatible with the higher speed and perhaps the passenger proportional-release braking.  I can easily see a larger 'parent' railroad building a set of express cars with steam and signal lines; while true high-speed three-piece trucks didn't come about (anywhere except the Reading) until post-WWII there was little about the Chrysler and other research that a savvy shop couldn't provide once aware of the utility.  Google the history of replacements for Allied Full Cushion trucks to see some of the possibilities...

Regular freight can be run 'mixed' with less capable coaches -- the principal difference being the issue of brake control.  For fun you could provide the equivalent of a cushion underframe on your coach, so some of the bumps and surge wouldn't be felt in the seats... Wink

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Posted by wrench567 on Monday, February 21, 2022 1:22 PM

This being a short line railroad, is there traffic density to warrant separate passenger and freight traffic? Or could there be several mixed trains with head end coaches? What would be the daily schedule? Three passenger trains to two freight? Would there be enough passenger traffic to justify a separate train? I would imagine said passenger operations would not be traveling at Blue Ribbon speeds. A short line railroad would probably not spend too much on heavy rail and deep ballast mainlines capable of high speed tonage. Saving the maintenance of another axle and going all 2-6-0 locomotives would suffice. 62 inch drivers for the heavy loads and drag freights with 72 inch or more fore the passenger runs.

  Just my thoughts.

    Pete.

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Posted by doctorwayne on Monday, February 21, 2022 1:11 PM

I like both 10-Wheelers and Moguls, and have four 10-Wheelers and three Moguls.

Two of the 10-wheelers are brass, but this one is currently the only brass one in use...

This is the other one, modified somewhat to match its prototype...

...but I'll be building a completely new body for the tender, as the one which came with the loco is incorrect for the number I chose.

I also have two Bachmann 10-Wheelers...

...but didn't much care for their somewhat old-fashioned appearance.
I converted their cylinders from slide valves to piston valves...

...then re-boilered them using a couple of old Varney cast metal boilers...

...and added cabs from Bachmann Consolidations...

I also shortened and narrowed the Bachmann tenders, and added a few details...

...then slapped-on some paint and lettering...

They run well, and are decent pullers, too.

The Moguls are from three different sources, and the first one was my first brass locomotive.  It was a model of a Boston & Maine prototype, but was a very poor runner.  Here's a photo of it with some slight detail modifications, after I had re-motored and re-geared it...

It still looked, to me, at least, a little too old fashioned for my late '30s-era layout, so I replaced the cab with one from a Bachmann Consolidation, and re-worked the tender to increase it's coal capacity.  It's a very good runner, and surprisingly good puller, too...

The next two were from IHC, and if I recall correctly, a ten- or twelve-dollar bargain each, from Hobbies For Men, in Beacon, New York.  A friend liked them so much that he bought one of mine.
They ran okay, but weren't very good pullers, so I re-motored mine and added weight to it, too. 

Here's the mostly as-bought appearance (the tender was originally for oil, as it was, I think, a model of a Southern Pacific prototype)...and, as you can see, I converted it into a coal burner...

I later reworked the tender again, to increase it's capacity...

...then also added a Bachmann cab, from a Consolidation, plus a few better details and some additional weight....

A couple of days ago, I was doing a little layout maintenance, and decided, on a whim, to test the drawbar pull of a pair of locos that were sitting in the upper level's staging yard.  One was a Bachmann Consolidation, the other the #37 Mogul.  I knew that the Bachmann Consolidations were very capable locomotives, but was surprised that tester showed an 8.3oz. drawbar pull for the pair.

My other Mogul, a brass model given to me by the same friend who had bought the other IHC loco, has some special significance to me.


I was a six year-old kid at the time, and a neighbour alerted us that there had been an accident on a nearby street, involving a locomotive.  My mother took me and my three year-old brother down to have a look...

Here's a photo, taken from the roof of a nearby building, by a newspaper photographer...(and then taken by me from one of Ian Wilson's books on railroads in Canada)....



...and this photo of a mural, painted on a wall on a different part of the same street several years ago....

The lead Mogul had picked a switch, with the illustrated results, while the other loco, a CNR Mikado is also visible, and still upright on the tracks.

The loco and tender were both repaired and put back into service, and my model will be of the repaired version.

Here's the re-worked locomotive....

....but I'll be making a new body for the tender, as it was very different from the one shown.

Wayne

 

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Posted by Overmod on Monday, February 21, 2022 11:59 AM

Bear in mind that if you are going to freelance a prototype, you could easily get higher performance out of a 2-6-0 just as you can with a modern Berkshire, at the front end, and some of the English booster experiment 'technology' at the tender end.

It has not yet been fully established whether or not the LS&MS high-speed Prairies were in fact stable at high speeds.  Apparently they ran just fine until the NYC people took over the technical side and rebuilt them into goofy Pacifics, right around the time of the great Wilgus debacle with the electric S1s (with, remember, different stability arrangements on their original two-wheel trucks).

First: the only thing that matters with adhesion is the weight on drivers.  A 4-6-0 and 2-6-0 with comparable FA will have comparable weight on drivers.  Weight distribution will be a bit different on a 4-6-0, and of course there needs to be more overall weight to get the Adams truck to run and guide correctly.

Second, using the geometry of, say, an AMC Berkshire, or the front engine of a N&W A or even a Y6b, will give you all the control of hunting and high-speed metastability that you'd need for a lead truck.  Add in a little carefully-considered damping or even snubbing and you'll have an engine with less weight, less length, equal or better running and guiding, and (arguably) less overall construction cost.

At the tender end, push the front tender truck forward until it is as close to the drivers as you can manage, and put in a good Franklin radial buffer with the right drawbar pivot points (as determined from the Bissel formula).  This keeps the back end of your engine from doing the G5/I1s dance at the speed the cylinders can push it.  It will be important that this lead tender truck be capable of accommodating serious lateral force quickly and effectively -- it probably shouldn't be a typical three-piece design with only friction shoes between the sideframes and bolster. 

Now with both these in place, you can start cranking off the amount of necessary overbalance to control that hunting we were concerned about... in other words, we can get almost arbitrarily close to the zero overbalance that was tried on some of the Australian 4-6-0s in the '50s.  With zero overbalance you can effectively eliminate dynamic augment in the running gear with a little angled cross-balancing.

Now you only need one class for almost anything you need to do with a steam locomotive; it backs up as easily as it goes forward, it has high adhesion for switching, it goes as fast as any branch line or Whippet-style fast freight service could need it to go...

  • Member since
    November 2013
  • 2,771 posts
Posted by snjroy on Monday, February 21, 2022 10:05 AM

To my knowledge, both were ubiquitous and could be used for pretty much anything. Performance was variable according to the type. There were also the 4-4-0s, that were still out there in the 30's on many lines, pulling passengers and freight.

To me, it boils down to looks and performance of the model you will buy. The Athearn models have traction tires that will help you get through the grades (2.5% is not insignificant for a steamer). The Bachmann's are really nice looking, but are not very good pullers. I love my Bachmann 2-6-0 (with new tooling). A good buy. You can double-head, but that's not very appealing if you are running a small number of cars. The Athearn is a bit more spartan-looking, and harder to find at a low price. But the little buggers can really pull...

Simon

  • Member since
    May 2019
  • 1,314 posts
Posted by BEAUSABRE on Monday, February 21, 2022 8:08 AM

The two short lines I'm most aware of, the Rahway Valley and Bellefonte Central, were both using second hand 2-8-0's by the Thirties. I think you're looking for something like RV #14

http://www.trainweb.org/rahwayvalley/Engine_14.htm

or BC #15 - which is represented by a Bachman product

https://www.youtube.com/watch?v=ADa0EU7p-3Y

 

 

 

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