XPost: sci.space.policy, sci.physics, sci.electronics.design   
   From: gossg@gossg.org   
      
   "Robert Clark"  wrote:   
      
   >I was estimating that size of the engine based on cited high horsepower for   
   >the Tesla cars. But I was surprised the mass and volume required for the   
   >Tesla electric motor is much smaller than a comparable gasoline engine. This   
   >video makes a comparison of a Tesla electric motor to a typical gas engine.   
   >The power to weight ratio is 10 times better for the Tesla electric motor(!)   
   >   
      
   I haven't been following the Tesla and similar modern electric cars.   
   I seem to recall that twenty years ago, they were predicting that the   
   big advantage of electric cars would be motors IN the wheels and no   
   transmission at all.  Did anyone ever go that route?   
      
   (My Ford hybrid has two electric motors and the gas engine.  I am   
   having trouble finding a good overview of the transmission, but it   
   seems to be based on a differential concept.)   
   --   
   We are geeks.  Resistance is voltage over current.   
      
   --- SoupGate-Win32 v1.05   
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