Robotics............?

Question

http://www.youtube.com/watch?v=1uuRyTmiGaw

&feature=PlayList&p=7B41727776A97FA0&playnext=1&playnext_from=PL&index=39

Could anyone please tell me how the robot goes up and down........

How can the gear racks support the whole weight of the robot??

Please it is very important for me.....

Please....

Thank You

Update:

the web site is

http://www.youtube.com/watch?v=1uuRyTmiGaw

&feature=PlayList&p=7B41727776A97FA0&playnext=1&playnext_from=PL&index=39...........

or type in youtube Lego NXT Stair Climber...

u'll get it...

Update 2:

the previous website but without the dots.....

Answer 1

Favorite Answer

I couldn't get the link. I suspect you are seeing movie magic.