My wife wants to get a road bike. She can't keep up with me on her mountain bike with me on my fixed gear. She hates having too many gears and wants to simplify things but she doesn't want a fix gear. I had a thought that I hope will work. My idea is to replace the front crank with a fixed gear crank with a 3/32 chain ring. The only problem I see is getting the gearing right. I'm sure it's been tried/done before but I can't find anything online. The process seems straight forward so I though I would seek some advice from you guys. Let me know if you see any problems with this. Thanks!