Mechanical power may be transmitted from engines placed just above the whee=
ls
and suspensions, i.e. the engines would be acting as sprung masses.

I've even seen hydraulic power transmission (think about Christini 2-wheel =
drive
bikes).

Cheers,
Mario



At 22.04 2012.06.08, you wrote:
>On Fri, June 8, 2012 1:23 pm, John Ferrell wrote:
>> With Brushless Motors, the devil is in the details!
>>
>> Start up, timing, switching, loading, transients, noise (both electrical
>> & audible) are all problems to address. Handling a hundred or so amps is
>> OK, but a brush less the size of an alternator would likely be in the
>> 4Kw-5hp range with Currents & voltages that are outside my normal
>> bounds. I would guess that the form factor would dictate an In Runner
>> which is inclined to be high revving, short power band...
>> OTH, the more I learn. the more I find that I don't know... I wonder
>> what electric vehicles are currently using... off to Google...
>
>>From my discussions with some local EV builders, AC induction motors
>(ACIM) are the most popular. Brushless motors use permanent magnets, and
>at least the last time I surveyed the landscape, in the range of power an
>EV needs, a brushless motor is just too heavy.
>
>I'd love to see a car with each wheel powered individually with its own
>hub-motor, but at least for now, the unsprung weight makes the vehicle
>impractical (poor handling and the very real possibility of a pot-hole not
>just bending a rim, but taking out a very expensive piece of your
>drivetrain).
>
>I would love to be shown just exactly how wrong I am.
>
>Regards,
>
>Matt Bennett
>Just outside of Austin, TX
>30.51,-97.91
>
>The views I express are my own, not that of my employer, a large
>multinational corporation that you are familiar with.
>--=20
>http://www.piclist.com PIC/SX FAQ & list archive
>View/change your membership options at
>http://mailman.mit.edu/mailman/listinfo/piclist

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