Hey all, i'm a new rider and my bike has a gearshift handle bar shifters. On the left side it moves from 1 - 2 -3 and the right handle is 1-2-3-4-5-6-7. So far my first few rides I kept the left side in 2 and moved it all the way from 3 - 7 depending on how slow or fast I wanted to ride.

Tonight I decided to experiment and moved the shifter on the left side to 3 once I was comfortable in 2 (left side) and 7 (right side). My guess was that the 1 on the left side means gears 1 thru 7, and that 2 would be 8 - 14, and 3 would be 15-21. However instead it seemed when I moved it to 3 it didn't necessarily get more difficult to pedal, it just felt weird like it threw my pedals / chains into wack for a minute, and I had to move the right side gears a bit to get it to feel normal again. I then moved it back to 2, and it threw it out of wack again making it feel weird to pedal, and I had to move the right side a couple gears before it felt normal again.

As of now i'm going to stay in 2 on the left side because i'm not understanding what the 1 and 3 are for on left side, or I am understanding that it's to move it from gears 1 all the way thru 21, and i'm just not shifting it correctly.


Any help on this? Thanks so much