You have it backwards. Unsprung weight refers to the weight which has no
suspension between it and the ground (tire, wheel, perhaps some or all of the
axle, diff, and driveshaft), while the spring weight is the portion which is
riding on springs (chassis, body, passengers, battery, etc.)
One minimizes unsprung weight in order to avoid using too much energy moving
the car up and down over bumps and potholes and so forth, among other reasons.
-Bill
> On May 18, 2015, at 16:35, Mark Grasser via EV <ev@lists.evdl.org> wrote:
>
> Hub motors are sprung, they are in the hub, which is sprung, as in sprung
> weight.
>
> .
>
> -----Original Message-----
> From: EV [mailto:ev-boun...@lists.evdl.org] On Behalf Of Peri Hartman via EV
> Sent: Monday, May 18, 2015 11:27 AM
> To: Ben Goren; Willie2; Electric Vehicle Discussion List
> Subject: Re: [EVDL] EVLN: Open Source Street-Legal affordable long-range
> EV4the masses
>
> Maybe they have short axles and aren't truly hub motors?
>
> ------ Original Message ------
> From: "Ben Goren via EV" <ev@lists.evdl.org>
> To: "Willie2" <wmckem...@gmail.com>; "Electric Vehicle Discussion List"
> <ev@lists.evdl.org>
> Sent: 18-May-15 8:24:54 AM
> Subject: Re: [EVDL] EVLN: Open Source Street-Legal affordable long-range
> EV4the masses
>
>>> On May 18, 2015, at 8:14 AM, Willie2 via EV <ev@lists.evdl.org> wrote:
>>>
>>> The URL posted for the car indicates that the hub motor(s) are
>>> sprung.
>>
>> Huh? How on Earth is _that_ supposed to work?
>>
>> b&
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>
>
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