If you’re looking at a 21-speed bike, it’s important to realize that you won’t see 21 different gears. Instead, you get three cogs (which are called “chain rings”) near the pedals at th… See more

Bear in mind, that you don’t ever have to change gears when you’re cycling if you don’t want to – the chain will connect a chain ring (one of the front cogs) and a cog from the re… See more

To make pedalling uphill easier you need to shift into a ‘low gear’. But, what exactly IS a ‘low gear’? The graphic below should hopefully explain. If you use the left gear shifter to m… See more

Sadly there are a couple of gears in the twenty-one that you shouldn’t use. These are: 1. Biggest cog at the front and biggest cog at the back 2. Smallest cog at the front and smalle… See more