Is there any such thing?
I would like to extend the gear range of my bike. I was thinking it would be really nice if someone is making an internal 3 speed hub with a freehub attached so I could continue to use my cassette and select the internal with a lower gear range.
I haven't looked into whats out there a whole lot because I simply don't know what to look for. The only thing I have seen in use other than the stock setup for a Catrike is some SRAM hub with a freewheel and twist (grip) shift. I want to avoid that if at all possible, and thus why I was thinking about the above.
The upper end of my gear range is fine, but if I ever want to actually ride on open road with weight more than myself I am going to have to find some solution.