It is somewhat illogical.The small cog on the bottom set is reducing the speed of the large cog at the bottom, so the large on on top turns slower. It would of course have greater torque as a result. The small cog at the top is not fixed to the large one behind it, and is by all appearnaces, redundant.
(
Not Pineapple anymore,
Wed 9 Mar 2011, 10:55,
archived)