Not a stock Rig hub...
No way 9-speed cassette would work; the stock hub's freewheel is too short (but just right for dishless SS).
Some here and elsewhere have added a set of three or four cogs to that hub's freewheel, and then (after spacing them for the correct shifter, 8- or 9- speed) adjusting the greared bikes derailleur to match. Finally, the chain benefits from shortening to better fit the new range in the rear.
It would be a lot of work to do once, and it certainly wouldn't allow simply swapping the wheel between bikes / rides, and would greatly compromse the geared range.
Of course the wheel on your Rig might not be the stock SS Bontrager, if you bought the bike used.
Best bet is to buy or build a wheel for the geared bike, and leave the stock Rig alone!
Good luck!
No way 9-speed cassette would work; the stock hub's freewheel is too short (but just right for dishless SS).
Some here and elsewhere have added a set of three or four cogs to that hub's freewheel, and then (after spacing them for the correct shifter, 8- or 9- speed) adjusting the greared bikes derailleur to match. Finally, the chain benefits from shortening to better fit the new range in the rear.
It would be a lot of work to do once, and it certainly wouldn't allow simply swapping the wheel between bikes / rides, and would greatly compromse the geared range.
Of course the wheel on your Rig might not be the stock SS Bontrager, if you bought the bike used.
Best bet is to buy or build a wheel for the geared bike, and leave the stock Rig alone!
Good luck!
