I am thinking that all I need is a large ring of 46 teeth. I have the standard crank with 130 mm bcd spacing. So if I have a 38 small ring which is as small as the 130 mm bcd will work and a 46 large ring I am thinking that this will be the best setup for me. My bike is a 7 speed.
So if I want to buy the correct chain rings what do I need to know and what do I need to take into consideration. Will I have to change the front derailer to get it to work with a 38 46 chain ring combination?