[Traindude]

It's not just steam engines that suffer from the wider-spaced smoke at higher speeds--it also seems to have affected the smoking cabooses in my collection:


Since the caboose smoke emitters emit particles at a fixed rate, you can see how wide the particles appear to be spaced at higher speeds. It looks OK when the caboose is at a standstill and/or moving slow.

[Weter]

Thanks, Brandon!
I just thought, the effects() section's sample would be sufficient for me to study.
Now, I can compare and debug my experimental eng-file! Great.

Quote

the front cylinders exhaust out the front smokestack and the rear cylinders exhaust out the rear smokestack

But what does that comment mean, while all z-coordinates are the same - 6.261

Quote

smoking cabeese

hah, instead of being stretched thinner with speed - the smoke looks stratched between single "clowds", which are bigger in size, than expected...

[Traindude]

Weter, on 22 February 2024 - 09:21 AM, said:

But what does that comment mean, while all z-coordinates are the same - 6.261

That comment is irrelevant for the Milwaukee 261, It applies only to the PRR T1.

Weter, on 22 February 2024 - 11:34 AM, said:

Has she two funnels?

Yes. Here's an image to prove it:



RED = Exhaust from front cylinders.
GREEN = Exhaust from rear cylinders.
BLUE = Exhaust from booster.

[Weter]

Thanks, sir!
Very interesting to look at drawings. Outstanding machine, indeed.
Big Boy had 4, some British "aristocracy" - too.
Here was 2-chimney variant, tied with Pirin's superheater usage.

Cross-sections show us, how prolifered the boiler was.

[ATSF3751]

Weter, on 22 February 2024 - 11:50 AM, said:

Thanks, sir!
Very interesting to look at drawings. Outstanding machine, indeed.
Big Boy had 4, some British "aristocracy" - too.
Here was 2-chimney variant, tied with Pirin's superheater usage.

Cross-sections show us, how prolifered the boiler was.

Nope Big Boy had two! Same set up as the PRR T1

[Hobo]

Hi Weter !

Take a look at the PRR S2 turbo . It's got 4 .

Rod

[Weter]

Hello, Rod!

Really thanks: I was pretty sure, I did see 4 stacks on some very big locomotive.
Now I know, which was that.

[rickloader]

Perhaps Weter you are thinking of the Lemaitre multiple jet blast pipe, which had 4 nozzles exhausting into 1 large diameter chimney. French idea but adopted by Bulleid in UK.

[Weter]

Might be. I can't remember well now: was that inside smoke box only, or outside.

[copperpen]

The Bullied/Lemaitre exhaust used a 5 nozzle blastpipe but only a single large diameter chimney, so externally you would only see a single exhaust stream. Some GWR Kings and Castles had a double chimney so you would see two exhaust streams from them. I think some of the East Coast pacific engines also had double chimneys.