People ride differing chain ring/cog set ups all the time, they just adjust the chain length to fit.
but you can't do this for both combinations at the same time. So you'll have to find two magic-gear ratios that will allow you to run the wheel in the same positon, or one chain will be slack.
but you can't do this for both combinations at the same time. So you'll have to find two magic-gear ratios that will allow you to run the wheel in the same positon, or one chain will be slack.