So you think you know about Trains? - Pt 2

[ZecMurphy]

Hi Bill
I'm not sure what happened there, seems it didn't post. The answer was (well, this was the intended answer for the question, as submitted to us):

If ruptured, the big danger of tank cars used on railroads carrying inflammable liquids, beyond the risk of fire itself, is that the cars are often pressurized. This, along with the expansion of the liquids being carried if there is already a fire, can lead to a ‘bleve’ or at minimum a rapid decompression of the vehicle.

 

[ZecMurphy]

What are the 7 essential mounting points on a steam boiler?

The 7 essential mounting points on a steam boiler are the Pressure Gauge, the Safety Valves, the Blowdown, the water gauge glass(es), the feedwater check valve and isolating valve, the man-hole/inspection cover, and the main steam stop valve.



This weeks question:
What are the three types of steam boiler design?

(also, we apologise for the typo in last week's question, it should have read '7 essential mounting points', not 8)

 

[flyboy559]

Fire tube, water tube, and cross tube boilers?

 

[ZecMurphy]

What are the three types of steam boiler design?

The three types of steam boiler design are Firetube, Water Tube, and ‘Steam Generator’ (a variation of the Water Tube boiler).


This weeks question:
What was the purpose, beyond aesthetics, of having highly polished brass domes, paint, and pipework on earlier steam locomotives?

 

[davidbird]

...
What was the purpose, beyond aesthetics, of having highly polished brass domes, paint, and pipework on earlier steam locomotives?

At a guess, to reduce heat loss & hence energy loss. Just as light is reflected from a mirror or highly polished surface, so is heat. It also works both ways, so as well as light and heat being reflected from the polished outside, heat inside is reflected back inwards.

 

[mezzoprezzo]

~snip~This weeks question:
What was the purpose, beyond aesthetics, of having highly polished brass domes, paint, and pipework on earlier steam locomotives?

I reckon it was done to allow leaks to be easily seen and assessed for appropriate action. Any egress would form a condensed residue on hot surfaces and would have been immediately spotted during regular checks.

It probably still holds good anywhere where steam is still used.

 

[trainboi1]

Highly polished early steam locomotives were used because early insulators such as copper, brass and Russian iron were very poor and a dirty locomotive could not perform to the standards of a clean one. Brass was mainly used for its practicality, hence why very few American locomotives had brass on their sand domes. The only metal that was polished for aesthetics alone was iron on the frames and rods.

 

[ZecMurphy]

What was the purpose, beyond aesthetics, of having highly polished brass domes, paint, and pipework on earlier steam locomotives?

The purpose of having highly polished brass domes, paint and pipework on earlier steam locomotives, beyond the aesthetics, was to assist with insulation of the boiler and pipework. In particular the dome and pipes, where early insulation such as timber was unable to be effectively used.

This weeks question:
Which American steam locomotive featured similar streamlining to the first three South Australian Railways 520 class locomotives?

 

[jordon412]

If I my SAR Classes are correct, than the 520 class has streamlining similar to Pennsylvania Railroad's T1 4-4-4-4, included in Trainz's Fleet of Modernism add-on pack.

 

[camelbacklao]

If I am not too wrong, the answer should be : PRR T-1 Duplex

 

[Saturnr]

It is the shark nose on the the SAR 520 Class and on the PRR T1. 4-4-4-4 Duplex.

 

[jacksonbarno]

If I am not too wrong, the answer should be : PRR T-1 Duplex

In all technicality, the PRR T-1 would be one of the Reading 4-8-4s that they leased in the mid-50's. You are thinking of the PRR T1, which was the duplex locomotive.

 

[Zeldaboy14]

I'm gonna guess... Fowler.

 

[judahGrice]

PRR T1. The one that they leased to C&O.

 

[Rio_Grande_Steam]

It was Pennsy T1 Class 4-4-4-4.

 

[AidynR761]

Pennsylvania Railroad T1 class 4-4-4-4

 

[AidynR761]

Which looks very similar to the SAR 520 class...

 

[Kashegan]

Which American steam locomotive featured similar streamlining to the first three Sout

Pennsylvania Railwaus T1 class

 

[ZecMurphy]

Which American steam locomotive featured similar streamlining to the first three South Australian Railways 520 class locomotives?

The American steam locomotive that featured similar streamlining to the first three South Australian Railways 520 class locomotives was the Pennsylvania Railroad’s T1 class locomotives.

This weeks question:
Which American railway company purchased the first narrow gauge 2-4-0 locomotive from the Baldwin Locomotive Works, as well as being the first locomotive purchased by that railway company.

 

[flyboy559]

The Denver & Rio Grande as it was known at the time. Later became the Denver & Rio Grande Western. The locomotive was built in 1871 and was named Montezuma​