From: dannyb@panix.com   
      
   In <10c43c6$15c$1@reader2.panix.com> tls@panix.com (Thor Lancelot Simon)   
   writes:   
      
   [snip]   
      
   >The conductor is so large, I doubt the lower resistance of aluminum vs steel   
   >matters much.  Losses _in the 3rd rail_ should be truly minimal.   
      
   >However, aluminum 3rd rail with a steel wear strip is much lighter than solid   
   >steel rail and that has to make life a whole lot nicer for anyone installing,   
   >removing, or maintaining it.   
      
   Aluminium was such a quaint staple:   
      
   https://www.wsj.com/business/autos/ford-toyota-aluminum-factory-   
   ire-b806cb2f?st=JtjXKK&reflink=desktopwebshare_permalink   
      
      
      
      
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   		     dannyb@panix.com   
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