pic: Team 60 Robot

[JVN]

Originally Posted by Aaron Lussier

Is it just me or is the chain on the right side of the picture bigger than the chain in the center or the left of the picture? Any reason for this? They seem to be serving the same purpose.

-Aaron

The chain on the left is powering the upper "elbow" joint. The chain on the right is powering the lower "shoulder" joint. This design seems VERY similar to Kingman's 2000 arm. (check out firstrobotics.net for more details).

You can see the chain on the left actually turns a tube which rotates OVER the main arm pivot, then that tube turns the spocket in the center, which drives the chain running vertically up through the "lower arm" section to power the elbow.

Pretty slick...

JVN