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Author Topic: Electric vehicles.  (Read 2545 times)

Offline Pumblechook

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Electric vehicles.
« on: 09/12/2007 18:00:07 »
Impractical with the technology we have today?


 

lyner

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Electric vehicles.
« Reply #1 on: 09/12/2007 18:06:17 »
Presumable you are not referring to trains and trams?
 

Offline Pumblechook

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Electric vehicles.
« Reply #2 on: 09/12/2007 18:08:04 »
Only vehicles which have to store or produce their own electricity. 
 

another_someone

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Electric vehicles.
« Reply #3 on: 09/12/2007 19:00:20 »
Impractical with the technology we have today?

Impractical for what?

If you are doing a journey of 10 to 20 miles a day, then we already have some vehicles that do that (more two wheeled vehicles than 4 wheeled vehicles, although we have both).  If you are looking to travel 200+ miles a day, then we are not there yet.

In fact, we have had electric milk floats (5mph max, local journeys only) since I was a child, over 40 years ago, and I don't know how much before that, and they are still around today).
 

Offline techmind

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Electric vehicles.
« Reply #4 on: 09/12/2007 20:38:06 »
But with electric vehicles you still have to charge them up, and (unless you really believe 100% renewable energy is a reality any time soon) you've simply moved the pollution elsewhere - not eliminated it. Sure, car engines aren't that efficient... but neither is electricity generation in thermal power stations.
One good advantage of electric cars for about-town (stop-start) journeys is that you can use regenerative braking to reclaim the kinetic energy when you have to brake, rather than merely dumping it as heat in the brake-pads/discs. (In normal braking of a typical car from 30mph to rest, you dissipate enough energy to boil a mug of water from each wheel.)
 

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Electric vehicles.
« Reply #4 on: 09/12/2007 20:38:06 »

 

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