my situation: I need a new bike and would love my next bike to be light and fast.
my plan: 2nd hand aluminium mountain-bike frames seem to be far cheaper than 2nd hand racing-bike frames. If I buy a mountain bike frame, could I fit racing-bike wheels to it? Would there be any major structural problems with this?
I just like cycling around town, and day trips in the countryside. I don't mind if the bike isn't triathlon standard 
Thanks!
