Originally Posted by
1989Pre
I need to get some replacement cogs, and have noticed that the four lowest cogs on the six-speed freewheel are splined in an off-set fashion. Does this design have a name? I am not sure of what criteria to use when I search for them.
I don't know if they have a specific name.
This was Sachs answer to Shimano Hyper Glide and index shifting. The offset fourth spline is used to make certain the sprockets can only be installed in one direction. These sprockets can't be flipped over.
However, prior to the introduction of Sachs Aris models, there was the Sachs Maillard models. These freewheels only had three equally spaced splines. They are compatible on your Sachs. You just need to make certain you install them with the same orientation as the four spline sprockets (make certain the writing on each faces in the same direction).
What size tooth count and what sequence (in the stack order) do you need?