Steam questions

[NW Mailing List]

Alright gang I'm back with more questions, Both are for the most part 
quick and hopefully simple. First what orientation did N&W prefer for 
the throttles of their steam locomotives? Horizontal or Vertical? I 
think the J and A both had Vertical oriented but I am not sure if that 
was N&W preference of just what they used on those locomotives for some 
reason.

Second Question is a little harder but I feel it will be easy for 
someone to answer. In listening to Link's recording of  Y6 working 
Waynesboro, at time I hear a distinct "thump thump thump" that is 
rythimic then it quits then it does it again. It does not sound like a 
Cross Compound to me so I am buffaloed as to what it is, Feedwater pump 
perhaps? I head the same sound in Hooters on Blues ridge when there is a 
Y doing Switching at Blue Ridge. It happens while the locomotive is 
still moving but the throttle seems to be closed and the engine coasting.

Thanks ahead of time,
Nathan

-- 
Nathan Simmons
trainman51 at gmail.com
http://www.t-51.org
KI4MSK