the tank wheel portion can change direction

but that feature would be more costly

and complicated?

 

if the diretional wheel can be wide enough

in width, and have enough traction,

 

the tank wheels should follow the direction?

 

i'm just thinking the pivoting direction

is the key to fluid movement

therefore, coverage of area by

programming like a roomba.

 

well, those are my thoughts anyway.

 

directional wheel basically

is there to guide the direction

but unlike vehicles,

it does not take the movement

by itself.

 

machine movement is covered by

the tank wheels.

 

or maybe few more directional wheels

on the front....

 

wonder if this makes sense...

 

ok.... i need sleep.

 

insomnia.