Originally Posted by
ImTrynaSkid
What is the gear switcher on the left for? It says friction i've tried using it and it made it harder to pedal but when i tried using it going downhill it messed up my chain and now im getting a new bike.
Big gear in the front for level terrain and going downhill. Little gear in front for going uphill or maybe into a head wind.
Avoid having big in front and big in the back at the same time or small in the front small in the back. It's called cross-chaining and it makes the bike noisy and wrecks the chain.