How To Change Gears On A 21 Speed Bike. On a 7-speed bike the lower gears make it easier to pedal and the higher gears allow for better movement going downhill. You can change the gears on your road bike when riding on the hoods this is when your hands are on the top of the shifters and will be your most-used position on the bike or from the drops.
Each speed on a bike refers to a different combination of gears. Shifting gears can sometimes take some time getting used to. A multispeed bike allows you to comfortably ride at different speeds across varying terrain.
Each gear of the bike relies heavily on the derailleur provided by the Shimano bicycle.
The first gear is low gear. Electric bikes generally have 1 3 18 21 24 27 32 or even 40 speeds. However this doesnt mean you have 21 useable gears. Gears are calculated with the combinations that they can make.
