From: stephen@sprunk.org   
      
   On 04-Jun-14 06:57, Jishnu Mukerji wrote:   
   > On 6/4/2014 5:20 AM, rcp27g@gmail.com wrote:   
   >> The real question is why modern locomotives end up so heavy.  I   
   >> expect part of it is that FRA requirements lead to the need for a   
   >> much heavier structure, and part of it is that the customers don't   
   >> bother specifying a lightweight locmotive, so they get what they   
   >> ask for.   
   >   
   > But a vanilla Vectron in Europe has an axle load over 22.5 t. So it   
   > is not like it is a pure American phenomenon. No FRA in Europe.   
      
   According to Wonkypedia:   
      
   Vectron (high)   
   Output (max): 6400kW   
   Weight: 87t   
   Axle Load: 21.8t   
   Power/Weight: 74kW/t   
      
   Vectron (medium)   
   Output (max): 5200kW   
   Weight: 80t   
   Axle Load: 20.0t   
   Power/Weight: 65kW/t   
      
   Amtrak ACS-64   
   Output (max): 6400kW   
   Weight: 98t   
   Axle Load: 24.5t   
   Power/Weight: 65kW/t   
      
   Note that the ACS-64 also has a 1000kW inverter for Amtrak HEP, which   
   adds weight of its own on top of the general FRA weight penalty.   
      
   Still, it's a solid improvement over what it's replacing:   
      
   Amtrak HHP-8   
   Output (max): 6000kW   
   Weight: 100t   
   Axle Load: 25.0t   
   Power/Weight: 60kW/t   
      
   Amtrak AEM-7   
   Output (max): 5100kW   
   Weight: 92t   
   Axle Load: 23.0t   
   Power/Weight: 55kW/t   
      
   S   
      
   --   
   Stephen Sprunk         "God does not play dice."  --Albert Einstein   
   CCIE #3723         "God is an inveterate gambler, and He throws the   
   K5SSS        dice at every possible opportunity." --Stephen Hawking   
      
   --- SoupGate/W32 v1.03   
    * Origin: LiveWire BBS -=*=- UseNet FTN Gateway (1:2320/1)