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The crankset, rear cassette, chain and derailleurs are known collectively as the drivetrain, pictured here: Chain rings: Bikes have one, two or three front chain rings, also known as the crankset. A bike with two chain rings is called a double. A bike with three chain rings is called a triple.

On a wagon or chariot, the wheels just respond and have to roll. On a bicycle or motorcycle, the power from the rider or engine is transmitted to the hub, forcing the hub to rotate. The spokes then need to transfer that power to the rim to make the wheel spin.

You may be surprised to know that most drivers can qualify for discounts on policy premiums. Insurance discounts are often available to people who purchase multiple types of insurance policies from the same agency. Discounts may also be available to drivers who have anti-theft monitoring devices installed on their vehicles, as well as those who tak

A bicycle frame is the main component of a bicycle, onto which wheels and other components are fitted. The modern and most common frame design for an upright bicycle is based on the safety bicycle, and consists of two triangles: a main triangle and a paired rear triangle. This is known as the diamond frame.

Begin by counting the number of teeth on the largest front sprocket and largest rear. These numbers are often printed right on the sprockets and cogs. Next, measure the distance between the middle of the crank bolt to the rear axle. This is also the chain stay length.

A no-claims bonus (NCB), sometimes called a no-claims discount, is a car insurance discount recognised by insurance providers. It's a count of the number of years you haven't made a claim on your car insurance policy. So for every year you drive without making a claim on your policy, you gain a no-claims bonus. The benefit of a NCB usually plateaus