On Mar 15, 12:23*am, wrote:
On Sat, 14 Mar 2009 20:44:42 -0700 (PDT), "

wrote:
http://www.cnn.com/video/#/video/tec...tweel.tech.cnn
Not solid rubber, rubber support ribs radiating from the hub.

Dear Mike,

The tweel's flexible spokes do a nice job of illustrating how the
spokes under a loaded axle behave:
*http://i42.tinypic.com/qso7qq.jpg

Unless Michelin comes up with some kind of cover, the wind drag will
be impressive. Maybe the flexing shown in the picture would prevent
snow, ice, and slush from filling the voids?

I guess over the years (the pic of that Auto-Union quadricycle is
from ought-five) they've learnt a few things and finally patented
one with a cover:
http://www.google.com/patents?id=zEV..._pages&cad=0_1
or
http://tinyurl.com/tweel0rz