this really doesn't make sense to do. if you dont' want to use the gears, don't use them! what would probably benefit you is changing your casette on the back. do you know what the tooth counts are? i have an 11-32 on my road bike my gf has 12-25 on her bike. I put her wheel on my bike and it was weird shifting and not really feeling th edifference in gearing. on my bike there is definately a jump in the gearing.