PCM Y6b question, Wortington SA

[nw-modeling-list at nwhs.org]

Hi Wulf-Dieter,
 
I'm afraid I can't help you about the details of feedwater heaters.
All I know I've got from books such as Kalmbach's Model Locomotive
Cyclopedia. I know the visual difference between different types of
heaters, but very little about the details of their workings, or why
one is preferred to the other for different locos.
 
In fact, British steam locomotives very rarely had feedwater heaters,
yet another difference in the railroad "cultures" of Britain and the
USA. 
 
Your friend has certainly made a wonderful model of the Y6b, and I
expect you are making a beautiful model of an A. "Live steam" is the
real deal - and I only wish I had the immense technical skill and
knowledge required to make such models.
 
Best Wishes,
 
Frank Hung


________________________________

	From: nw-modeling-list-bounces at nwhs.org
[mailto:nw-modeling-list-bounces at nwhs.org] On Behalf Of
nw-modeling-list at nwhs.org
	Sent: 07 June 2006 21:45
	To: nw-modeling-list at nwhs.org
	Subject: Re: PCM Y6b question, Wortington SA
	
	
	
	To Frank Hung and King,
	 
	following up your explanations regarding the Worthington SA
feedwater system, I'd like to ask a question to the experts:
	As longtime fan of the N&W I am just constructing a Class A in
1:10 scale (lifesteam).
	A friend of mine already built a wounderful Y6b, intending to
use the same equipment (pumps, turbogenerator, stoker). Please see
pdf-photo.
	 
	That 6SA feedwater pump is working already, but with a steam
distributing principle (Peters) different from  Worthington's. I
couldn't find any precise discription of their valve gear to
understand the principle (locomotive cyclopedia, internet). By the
way, the Chinese class QJ was using the Worthington SA system, too.
	For it was obviously both simple and reliable I wonder if
anybody could explain to me in detail? 
	Thanks a lot!
	 
	Wulf-Dieter Heinrich
	Düsseldorf
	Germany
	
	Email: WDHprivat at aol.com
	

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