Second hand bicycle sources can be found in most any city or town and online. Knowing how to identify the type, condition, and comfortably deciding whether the bike is safe are some of the most obvious factors to consider. Your first stop in locating the best available and cool second hand bicycles should be at BikeOrBicycle. They are one of Dublin’s best sources for bike and they can easily ship your bike anywhere.

Some important aspects to purchasing a second hand bicycle include:

It’s all in the wheel – be sure you can tell the difference between the type of gear assembly of the bike. For example, if it is a single speed bike, it should have a common gearing ratio, 2:1, and the chain ring should be located on the front gear because there are twice as many teeth than on the cog or rear gear mechanism. For each revolution of the 2:1 geared bike’s crank the rear wheel must rotate two times as many. The lower the ratio the easier it is to pedal while the higher the ratio is the more power is transferred which means that pedaling is harder but you get less spinning of the crank.

For a fixed gear bike, for example, the cog is threaded or bolted directly onto the hub of the back wheel. This means that the rider cannot stop pedaling but that you may pedal either forward or backwards whereas pedaling backwards will result in braking.

Give me a brake – for obvious reasons, brakes are the most important safety items next to reflectors that you could have on your bike. On some of the older bicycles, a rod brake system was typical which used a series of rods and pivots instead of the Bowden cables for transferring force. This design was a bit more complicated that brakes today. Eventually, brakes had evolved and after the rod system it was more common to find the side-pull caliper brakes. This design is very similar to brakes systems today.

Aside from the safety and personal need to having reliable and functioning brake system, it is the law in some jurisdictions too.

What’s all the hub bub – the hub is the device that connects the wheel’s rim and spokes to the chassis via an axle which allows the wheel to freely spin. There are two types: front hubs and read hubs. Most hubs permit coasting or freewheeling by the rider except for the fixed gear and track bike types.

Adjust your attitude – the derailleur and pulley mechanisms must be easily adjustable so that tension is made more or less on the overall drive train. In some cases the derailleur should be adjusted as needed if included on your bike.