http://www.youtube.com/watch?v=-EopVDgSPAk&NR=1
see even a 8 yr old gets it. now do yourselves a favor and slap yourself in the face.
http://www.youtube.com/watch?v=siYQU99VaAM
and to answer the stupid friction questions..... he says at the end QUOTE
> "without the piece of tape all I would need to do is provide a
SMALL amount of force to overcome the friction of the bearings.