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Originally Posted by Chris is me
I've tried this concept a few times (putting the shifter shaft in the first reduction), and the problem I consistently run into is that the gear ratios end up way too close together if the CIMs drive the ball shifter gears. I've tried fixing this by having the CIMs drive the ball shifter output and using the shifting gears as pinions for a second stage, but then the gearbox gets HUGE. How have you gotten around these problems?
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I didn't spend a lot of time looking at the alternatives, but the selection of ball shifter gears is pretty limited. When I found a combination that worked and gave a 1.82:1 spread, I stuck with it. The thought occurred to me that making your own ball shifter gears wouldn't be too difficult. It may open up some interesting possibilities.