Ben Goren via EV wrote:
The URL posted for the car indicates that the hub motor(s) are sprung.
Huh? How on Earth is _that_ supposed to work?
One way is to have a long shaft on the motor. It acts like a swing axle,
like the old VW Beetles. The motor itself is mounted so it can pivot, or
has a universal joint between it and the axle.
Another is to have a gear-, chain-, or belt-reduction between the motor
shaft and the wheel. The motor mounts to the vehicle chassis, and the
wheel is free to move up/down on a trailing arm (that also houses the
reduction unit).
Another is that they have an axial flux motor design, where the stator
can be attached to the car chassis, but the rotor can move up/down with
the suspension.
Still another possibility is that the reporter is mistaken.
--
A designer knows he has achieved perfection not when there is
nothing left to add, but when there is nothing left to take away.
-- Antoine de Saint Exupery
--
Lee Hart, 814 8th Ave N, Sartell MN 56377, www.sunrise-ev.com
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