Originally Posted by
biker128pedal
The cheapest thing to do is to get good at changing tires.
For a second set of wheels don't forget the rims. Not all rims align the same with the brake pads. You would have to adjust your brake pad every time you change wheel sets. Not very much but some. The easiest/cheapest thing to do is see if the dealer can get the exact same wheel set. Maybe somebody upgraded and they have an extra set.
The other easy option is to upgrade the wheel set and get duplicates. If a 7-speed cassette fits the freehub you you can use shims. I have a 7 speed cassette on a 9 speed mavic rear wheel. I used old cassette spacers as shims.
Wheelset
http://www.nashbar.com/profile.cfm?c...%20%2D%20Pairs
Cassette (Still need shims)
http://www.nashbar.com/profile.cfm?c...A%20Freewheels
I like cheap, but I also like easy. I didn't think about possibly needing to make adjustments if the wheelsets aren't exactly the same.
Now I need to decide if I need the strength of a cassette. I am about 150lbs. but I tend to ride my bikes somewhat hard. I'm used to riding a Trek 8500. These bikes feel completely different. I bought the 3700 (the black one) knowing that I might want to make some changes to it. I know I could have spent a little more and bought something with better options and components, but I figured wrenching on this one would be a good learning experience.
Oh, thanks for the links biker128pedal. Those wheels might fit the bill if I decide to go with discs in the future. That's another thread for another day. Thanks everyone!