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View Full Version : my last concept for a columbus box a virtual cog :)

raaaid
01-15-2012, 08:52 AM
http://i40.photobucket.com/albums/e222/raaaid/Imagen0186.jpg

Messaschnitzel
01-17-2012, 02:01 AM
Heh-Heh. OK folks, I'll be the one to take the bait!

Hey raaaid,

After looking at your diagram, (if I interpret it correctly...) are the diagonal green lines that are connected to the 1kg weight supposed to represent a single cable or belt that's threaded once around each pulley wheel? If that's the case, the method you are using to thread the belt and wheels will not physically work. There is no way that I know of to wind a belt or cable that enters around the left bottom side of a wheel and have it emerge from the top right hand side of the same wheel, with the belt on the right side going at the same angle and downward direction that the belt on the opposite side of the same wheel does. (does this make sense? :confused:) On the other hand, you'll find that if you alternate the belt to wind on the opposite side of the middle pulley wheel in order for it to rotate in the opposite direction of the top and bottom pulley, then the belt will be able to continuously run to the weight you have connected at the bottom. Also, if you are trying to show a mechanism as it would be in its application, I'd think that you'd need to have some sort of a counter-balance illustrated at the opposite end of the cable that has the 1kg weight attached to make the drawing more clear to the viewer.

raaaid
01-17-2012, 06:12 AM
thanks a lot il read that carefully i ve been 10 years now trying to build a columbus box and im begining to think its imposible but oh well you gotta listen elmo:

raaaid
01-17-2012, 07:26 AM
"are the diagonal green lines that are connected to the 1kg weight supposed to represent a single cable or belt that's threaded once around each pulley wheel?"

they represent a single cable

the idea is that putting lot of this pulleys with 1kg*1m i can get as many more torque, 7 pulleys 7 kg m

taking energy as conserved because the 1 kg would drop hugely even with an small arm

i said imposible but with i whta i know i was not being honest with myself

dificult, oh yeahh

here the concept better applied for a columbus box :)

http://i40.photobucket.com/albums/e222/raaaid/Imagen0188.jpg