[LINK] Standards, please! The third coming of electric vehicles

[Frank O'Connor]

Tres cool!

On 22/04/2012, at 4:42 PM, Richard Chirgwin wrote:

> Let's say, rather, that they're not yet on the market ...
> 
> http://www.mitsubishi-motors.com/corporate/about_us/technology/environment/e/miev.html
> 
> RC
> 
> On 22/04/12 1:07 PM, Karl Auer wrote:
>> On Sun, 2012-04-22 at 10:09 +1000, David Boxall wrote:
>>> On 22/04/2012 2:02 AM, Frank O'Connor wrote:
>>>> - Why not install multiple smaller engines in an electric car?
>>>> - Why not install them in the wheels?
>>> ...
>>> A small matter of physics. That arrangement might work at very low
>>> speeds and/or on extremely smooth roads. The problem comes when you hit
>>> a bump.
>> Something we agree on! Multiple motors - yes, maybe. In the wheels,
>> nope.
>> 
>>> Adding a motor increases the weight of the wheel. Vehicles employing
>>> so-called wheel-motors have been made (might still be in production),
>>> but none give a very comfortable ride, particularly at speeds above
>>> walking pace.
>> They work well in unsprung and/or slow vehicles (electric bikes, for
>> example). Otherwise, nope.
>> 
>>> characteristics. Unfortunately, the necessary axles and constant
>>> velocity joints add to costs
>> Multiple electric motors can be governed by software of course, meaning
>> that no diff is needed, but as far as I know noone is actually designing
>> cars like that - yet :-)
>> 
>> Regards, K.
>> 
>> 
>> 
>> 
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