... components as an open differential, plus a spring pack and a ... The tire has to overcome the traction present plus the preload resistance to spin faster. ...
The Mitten Author Jan Brett Nicki takes his new snow-white mittens with him outside. After he unknowingly drops one of them, several critters find shelter in it.
Transmit power to the wheel while allowing them to rotate at different speed ... more torque to be transfer to non-slipping wheel when wheel(s) loose traction ...