What can one deduce from locomotive wheel arrangements?

[mrs quoad]

Other than the arrangement of wheels, of course.

Are there general rules of thumb as to the types and purposes of engines that might be best served by different configurations?

I see - for example - that 6-2-0 James was an experimental engine rebuild, of a broader type generally used as tender engines. Might one have been able to deduce the rendering aspect from the 0? Does the 6 imply anything, and / or relate to power? And why might one want more or less leading wheels?

 

[editor]

I guess it's all to do with power/load ratios but here's a handy chart:

• Single Axle Lead Pilot Truck Classes
  • 2-2-2 (8ft Drivers): Great Western
  • 2-2-2 (7ft Drivers): Star or Firefly
  • 2-4-0: Hawthorn or Victoria
  • 2-4-2: Columbia
  • 2-6-0: Mogul
  • 2-6-2: Prairie
  • 2-8-0: Consolidation
  • 2-8-2: Mikado or Calument (MacArthur after Pearl Harbor)
  • 2-8-4: Berkshire (Kanawha on the Chesapeake and Ohio Railroad)
  • 2-10-0: Decapod
  • 2-10-2: Santa Fe
  • 2-10-4: Texas
• • 4-2-0: Jervis
  • 4-2-2: Iron Duke/Rover
  • 4-4-0: American
  • 4-4-2: Atlantic
  • 4-6-0: Ten Wheel
  • 4-6-2: Pacific or St. Paul
  • 4-6-4: Hudson or Baltic
  • 4-8-0: Twelve Wheel
  • 4-8-2: Mountain
  • 4-8-4: *see 4-8-4 Locomotive Class Names (below)
  • 4-10-0: Mastodon
  • 4-10-2: Southern Pacific (named for the primary railroad to use them)
  • 4-12-2: Union Pacific (named for the only railroad to use them)

Steam Locomotive Classes

 

[gosub]

autism?

 

[editor]

autism?

What?

 

[phillm]

Was looking for an obscure place for my 500th post - this'll do. As you were.

 

[Orang Utan]

U ok, hun?

 

[kebabking]

autism?

I was going to go for 'one can deduce that the questioner has never touched a woman', but in mrs quoad case I'd humbly suggest that this interest may be a result of some form of breakdown given the stress of the recent holiday from hell..

See posts passim for further details.

 

[mrs quoad]

I was going to go for 'one can deduce that the questioner has never touched a woman', but in mrs quoad case I'd humbly suggest that this interest may be a result of some form of breakdown given the stress of the recent holiday from hell..

See posts passim for further details.

Touching a woman is the root of this problem.

I was never remotely interested in trains, until we had a toddler.

Now, most evenings, he's choosing three Railway Stories books. (Rev Awdry's 26-volume collection, which includes the Thomas &c. stories). Each Railway Stories book contains 3-4 stories.

There are lots of details in there. Lots, and lots, and lots of details.

I find I have become interested in steam trains.

(My wife won't even listen to an explanation of why Thomas is clearly a tank engine, as opposed to some of the obvious tender engines. I note that in our toddler's far more recent Thomas and Friends magazine, pretty much all of the trains have been de-tanked. Except thomas.)

 

[kabbes]

quoad, your questions have become rapid and various enough that I am beginning to suspect toddler influence beyond mere interest in tank engines.

 

[kabbes]

That reminds me, actually. I meant to change my status in response to this post. Job now done.

 

[mrs quoad]

quoad, your questions have become rapid and various enough that I am beginning to suspect toddler influence beyond mere interest in tank engines.

Desk this morning:

 

[kabbes]

I like it

 

[mauvais]

I have to say I'm puzzled by this appearance of a very, very small E30 M3. I don't know where it fits amongst Macbooks and speciality coffee and Guildfords. Have you now captured the concept of semi-vintage cars for your own?

 

[hash tag]

You could start with a day out with Thomas, that ever so charming little tank engine Meet Thomas and his friends at a railway near you « Wilson Digital Media t/a Online Ticketing and ask the rather large controller to explain these things to you.

Im partial to a West Country Class which is a 4-6-2

 

[mrs quoad]

I have to say I'm puzzled by this appearance of a very, very small E30 M3. I don't know where it fits amongst Macbooks and speciality coffee and Guildfords. Have you now captured the concept of semi-vintage cars for your own?

The toddler chooses boring cars. And appears to have hidden this one in my jeans money pocket.

I chose a more interesting one for myself this evening. He insisted on a £2 orange truck.

 

[A380]

1-4-4-4-2 = someone was compensating for something?

 

[phillm]

Sadly owing to my ill-formed, malign ,stereotyping predujice I can't but see a model railway shop as little other than a nonce-magnet. And I fear if I was to ever step inside such a place my predujices would be confirmed.

Paedo uses miniature train to lure children

On a slight tangent though these models look good ...... (Not that I condone voyeuristic harrasement that appears to be happening in pic 1) A hole has been found in the nudist camp wall. The police are looking into it.

Model railway fans buying up miniature doggers, prostitutes, Peeping Toms and nudists

 

[hash tag]

Built in Glasgow for South African Railways is this wee beast thats on display at the Buckingham rail centre

3405 Janice

 

[StoneRoad]

mrs quoad - don't get me started on railways and locomotive wheel arrangements.
There is a relatively simple, no - straightforward - explanation for them.
I don't have a break long enough at the moment to type it out, but if you can hang on for a while ...

 

[mrs quoad]

That's my new car, fwiw.

 

[hash tag]

Are the reasons for the wheel/axel arrangement much different from a lorry? The greater the load the more the axel's. Except with a lorry you have wheels that steer, wheels that don't, hubs that are prominent and hubs that are recessed. After all, many axels make light work

 

[Saul Goodman]

View attachment 104778

That's my new car, fwiw.

Is you a ant?

 

[aqua]

Calling beesonthewhatnow

Quoady you should come up this way and we can meet you at Thomas land!

 

[mrs quoad]

Look at this fucker!

What a massive wheel fucker!

The fucker.

 

[mrs quoad]

The locomotive, that is. Not the man looking at it.

I don't know anything about the size of his wheel.

 

[hash tag]

I always thought less is more

 

[bi0boy]

The max speed is determined by the diameter of the largest wheels (the driven ones) because they don't have gears.

 

[twentythreedom]

Bo-bo and co-co lead one to deduce BOGIES!!

Excellent toddler material there

 

[existentialist]

Desk this morning:
View attachment 104736

2-2-0. Unless it's front-wheel drive, in which case 0-2-2. 4-wheel drive would be 0-4-0.

Actually, since the fuel is carried internally, rather than in a tender, it'd be 2-2-0T/0-2-2T/0-4-0T.

Nowadays, the IEC classification is generally used, which makes it 1-A, A-1 or B. I don't think IEC covers tender/tank.

 

[existentialist]

The max speed is determined by the diameter of the largest wheels (the driven ones) because they don't have gears.

Er...locomotives with small wheels didn't have gears, either. I've generally assumed that they went for large wheels because the engineering wasn't up to very rapidly reciprocating stuff, so you get more metres per revolution with large wheels than with small. Or, to put it another way, fewer reciprocations per km.

These things had tiny driving wheels (5'0"), but could do 90mph

But they were at the pinnacle of steam engine design, so I presume they'd got the design and engineering finessed to the point that you could afford to have everything thundering back and forth 200+ times per km without the engine shaking itself to bits, or smashing up the track.