Automatic trans in electric car? why can%26#039;t you use an automatic transmission in the electric car conversion kits

Best Answer - Chosen by Voters

The only reason that I could think of is that the transmission is shifted by vacuum from the engine, and an electric motor does not create a vacuum, how ever you should be able the shift it manually, but you would have to tighten the salvo to not down shift. jcms 80% 4 Votes

Other Answers (5)

• Electric cars use a CVT (continuous variable transmission). Unlike tradition transmissions of gears, CVT is a transmission made up of chains that adjust to provide the correct amount of torque and power to the wheels.
  
  Automatic transmissions also decreases your mileage, while a CVT is electronically controlled to optimize fuel efficiency. 0% 0 Votes
• We can use a motor per wheel structure and a winding system that does not need a gear shifting system. We can use a starting winding designed to get the vehicle moving. We will use that even if we use a gear system.
  
  We can use reverse as a winding.
  Now we can use a two-speed gear shifter. But we do not have a need for a torque converter. Electric motors do a remarkably good job of torque conversion. A liquid torque converter is not needed.
  
  We do not need a set of bands on gears, though that is unimportant. 0% 0 Votes
• automatic transmissions require alot of hp which would detract from the benefit of an electric car. I have a Prius and it has a very smooth transition not the feel of my previous %26#039;06 Camry. Believe that auto trans works on hydraulics using the vacuum to aid with the shifting - to tell it when to shift... 0% 0 Votes
• There%26#039;s no point in having a multi-ratio transmission, automatic or not in an electric car because the electric motor doesn%26#039;t have a limited power band like an internal combustion engine so all an electric car needs is a one speed reduction gearbox (reverse can be done by running the motor backwards). 20% 1 Vote
• Most electric cars do not need a transmission. The electric motor has totally different dynamic characteristics.
  
  And no, automatic transmissions are not shifted by vacuum. 0% 0 Votes