Im completely new to bike mechanics so excuse my niavety at my questioning!
I have a 21 speed mountain bike. It has Shimano gears. It has 3 "big" wheels on the pedal part of the gears.
I counted the teeth on the biggest wheel and there are 48. I noticed at the shop there is a 52 teeth chain wheel and cranks.
My question is thus....
Can i simply unbolt my existing chain wheel set up, take it out and replace it with the setup with more teeth?
Will this also give me a "higher geared" set up so that i will be able to generate as much top speed (if not more!) for less revolutions of the pedals?
I look forward to your reply.
P.S. for those of you who say BUY A NEW BIKE.....I cant afford that!