the reason this works is how many revolutions of the driver per revolution of the sprocket. ex
32-13 lets just say per 1 revolution of the sprocket you get 3 revolutions of the driver. this is harder to do, because your using 1 revolution of the sprocket to get 3 of the driver. so your getting a ratio of 1:3
but with say 30-13 you might get per 2 revolutions of the sprocket get 3 revolutions of the driver. this is easier to do because it takes longer for the 3 revolutions of the driver. so a ratio of 2:3
its either shorter and harder pedals
or longer and easier pedals.
hope i helped.How to pedal on my bmx bike with less force?Look at your friends bike frame. Your best straight comes from your thighs. The height of your seat is very important to your power to your legs. Usually you should be just able to touch your toes while reaching down with one foot while sitting on the seat.Many years of pedaling bikes for transportation while in college and high school. I did get to do one race. It was 12 miles and both me and the teacher came in second place in our Category's.How to pedal on my bmx bike with less force?front sprocket smaller or back one bigger
or smaller wheels
longer pedals
this is why bikes that you ride more than a mile - have gears
or maybe your brakes are stuck or the wheel is rubbing the frame
wle