Spent a little time this morning assembling the planetary gear system. The set consists of 2 4:1 segments and 2 5:1 segments. This allows for ratios ranging from 4:1 all the way up to 400:1. Put the full stack together just to verify functionality. It's pretty apparent that 400:1 is going to be way too much. Next step will be to play with the gear ratios to find the sweet spot.