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Subject: 
Re: Stupid question about steam engines
Newsgroups: 
lugnet.trains
Date: 
Wed, 5 Apr 2000 14:31:40 GMT
Reply-To: 
johnneal@uswest^avoidspam^.net
Viewed: 
2624 times
  
Of course, more wasn't better.  More wheels meant less weight per wheel thus
protecting rails which couldn't support that much weight.  Generally speaking,
this is why Euro..er stuff has more wheels per pound than US stuff.  So actually,
less is better... <g,d,r>

-John

Matthew Karius wrote:

For steam engines with the most total wheels I think the title might go to some
of the Garratt locomotives in Africa and Australia.  Some of them had wheel
arrangements of 4-8-4+4-8-4 for a total of 32.  Only 16 of the wheels were
powered however.  Check out this site for more about the Garratts

http://users.powernet.co.uk/hamilton/

Regards,
Matt



Message has 2 Replies:
  Re: Stupid question about steam engines
 
(...) It doesn't matter! It is FOA which matters, if you have 100 powered wheels or 2 powered wheels, if you have the same weight above them, you can deliver the same torque to the track to start the train. (FOA=Factor Of Adhesion, Tractive (...) (25 years ago, 5-Apr-00, to lugnet.trains)
  Re: Stupid question about steam engines
 
(...) actually, (...) I'm not I understand why you say less is better. Your point about spreading the weight over more wheels to protect the track is correct. The Garratts are used on narrow guage as well as standard guage track. To run that big an (...) (25 years ago, 5-Apr-00, to lugnet.trains)

Message is in Reply To:
  Re: Stupid question about steam engines
 
For steam engines with the most total wheels I think the title might go to some of the Garratt locomotives in Africa and Australia. Some of them had wheel arrangements of 4-8-4+4-8-4 for a total of 32. Only 16 of the wheels were powered however. (...) (25 years ago, 5-Apr-00, to lugnet.trains)  

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