From: gl4317@yahoo.com

In article ,
 Larry Sheldon  wrote:

> One remaining question, or maybe two--why are the cylinders as far away
> from the boiler as they can be? Do the exhausts lead back to the smoke
> stack?

Usually, at least one set does go back to the stack, and if you look at
videos of them operating the stack has exhaust steam coming out of it.
There doesn't seem to be steam exhaust from anywhere else either.

http://www.youtube.com/watch?v=DIbMcJ3jxKo
(South Africa knows how to show boat its remaining steam locomotives!)

http://www.youtube.com/watch?v=lglIMCqb9TY

http://www.youtube.com/watch?v=Vz7FNe_C4qk
(about 2:30 into that video you can see the steam exhaust blasts start)
(Oh, and that's the East African Railways Garratts that started this
discussion).

http://www.youtube.com/watch?v=r5EjoNNp_DA
(This was a movie taken in 1990, and would have been when South Africa
was embargoed and was therefore still operating steam on a regular basis
on a number of lines.  It shows how little smoke these made when they
were being used in regular service, and not putting on a show for the
camera.)


> That is a lot of high-pressure steam hose!

I agree completely.  I think it winds up being less than a Mallet style
that has high pressure on all cylinders (the original Mallet had high
and low pressure cylinders).  However, there seem like a lot of joints
to maintain.

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