Thank you for the replies--they are very helpful. As for details regarding the bikes' sprockets, as of yet I have not chosen a replacement bike for the wheels. I've actually just been using them with the bike they came with as a winter beater. In the near future, I may switch them to something else, keeping in mind the brake adjustment/possible replacement needed. I would also likely switch the rear multigeared freewheel to a single speed freewheel.