This bot Sucks

My suction bot goes up walls.
See TCRobots.org for more information

Version 2
"Sucks To" sumo

Version 1
The top view shows the shell and white board erasers

The blower fan draws 2 amps from a 9.7 volt AA nicad battery pack.

The shell does not press against the ground so a soft spongy seal fills the gap.
If the shell does press against the ground the bot can't move.

The motors are hacked servos with lego wheels attached.