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Looks like a trip to Australia is in my future! The advantage of a Garrett is that a larger boiler could be used for railroads with somewhat restricted vertical clearances, since the boiler is suspended between the coal supply and the water supply. One weakness is that adhesion was reduced as the coal and water supply over each "engine set" was used. This engine has great exhaust sound and also a great whistle, very interesting video!

Magnificent machine!  And the Aussies use a "real whistle", not a European peanut whistle. One curiosity is the sharp bark of this locomotive; the exhaust from each engine has to travel back to the stack. Wonder what accounts for this? On American articulateds with a lengthy exhaust passageway, what is generally heard is a rather mushy exhaust. 

      Loved the telephoto broadside of this Aussie "Big Boy" on the high bridge!

Originally Posted by mark s:

 One curiosity is the sharp bark of this locomotive; the exhaust from each engine has to travel back to the stack. Wonder what accounts for this? On American articulateds with a lengthy exhaust passageway, what is generally heard is a rather mushy exhaust. 

No matter the distance traveled by the exhaust from the "rear engine", the exhaust steam must all still pass through the single exhaust nozzle (remember, that these locomotives are NOT like an Erie Triplex). 

 

Which American articulates are you referring to that had/have "mushy exhausts"? I must admit that I have NEVER heard ANY N&W articulated steam locomotives with "mushy exhausts", and the N&W 1218, nor the UP 3985 had "mushy exhausts".

The recordings (Fogg, Link, "Sounds of Steam Locomotives" - Library of Congress) I have heard of UP Big Boys and Challengers and N&W Y's and A's I have heard sound mushy - not stacato like 2 cylinder engines - when operating out on the road. Now I have heard a Howard Fogg recording of a Big Boy on an iron ore train, heading to Denver, starting after a water stop. It had a booming, pretty sharp exhaust. Even live, witnessing the 1218 and 3985, can't say I have really ever heard either sound like a cannon.......as compared to, say, a Burlington O5 or S4!

https://www.youtube.com/watch?v=zUnug7rrJz0     Ok, here's an example of 1218 talking it up pretty good. But the recordings I have heard of the big articulateds operating in freight service were kind of disappointing. As a kid, playng my Vinton L. Wright recordings of Big Boys and Challengers, thought I would have to take precautions so as to not blow the doors of my parents' home. But, alas, they sounded more like two sandpaper blocks rubbing against each other!

Originally Posted by mark s:

The recordings (Fogg, Link, "Sounds of Steam Locomotives" - Library of Congress) I have heard of UP Big Boys and Challengers and N&W Y's and A's I have heard sound mushy - not stacato like 2 cylinder engines - when operating out on the road. Now I have heard a Howard Fogg recording of a Big Boy on an iron ore train, heading to Denver, starting after a water stop. It had a booming, pretty sharp exhaust. Even live, witnessing the 1218 and 3985, can't say I have really ever heard either sound like a cannon.......as compared to, say, a Burlington O5 or S4!

Mark,

 

You are comparing apples & oranges when trying to compare ANY other steam locomotive to a Burlington S4 or O5! Concerning the 1218 and the 3985, I guess you just haven't been in the right locations.

In all fairness to N&W 1218, she has to be working hard to get the best Class A sound.  If you can locate Al Sherry's Extra 1235 East recording, you will hear some of the best Class A sounds ever recorded !  Of course having 150 loads of coal on the 1.2 % doesn't hurt.  I have to admit, that in fantrip service, 1218 only once lived up to her true sound potential...and that was on a video, as far as my experiences.

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