For motorcycles - steel. For bicycles there's an option between steel, aluminium, and even titanium. Although on a bicycle it's usually not called a "main drive cog", so I'm guessing you're referring to a motorcycle.
a cog wheel is the main part that runs the cog entire body
I saw how a cog building is made. A cog that is walking down the street will choose what building he will turn a cog building into. He walks into that building and then it automatically turns into a cog building.
A simplistic answer is: A cog wheel is a circular disc that has teeth round the edge. These teeth usually mesh with the teeth of another cog. If one cog is turned, the other cog moves too. The cogs can be made from metal or plastic.
The speed of the rod is proportional to the number of teeth on the cog and that which is driving the cog. If the driver remains the same then in order for the driver and the cog to mate one typically needs to reduce the number of teeth on the cog when it is made smaller. Thus the ratio of the teeth on the driver to that on the cog is increased as will its speed.
there are pistons in the motorbike and the move up and down and it makes the cog move then the chain moves the bike
No. It won't. People only thought that it would because in Cashbot HQ Cog Nation boxes are everywhere. There is a possibility that a new cog HQ will come out since they made the Toontasks easier in Test Toontown. Be aware!
Agio, ciao, cog, ago, go
cog is a robot
A 2.0 version cog is a cog that when you destroy it, it will turn into a skelecog.
This honor is usually given to John Kemp Starley
This honor is usually given to John Kemp Starley
Cog11 invented the cog