How Do Mountain Bike Gears Work

Modern mountain bikes can boast as many as 27 different gear ratios. A bike with 30 or more gears is not an indication of a machine designed to break the land speed record any more than a bike with only a single gear assuming similar ratios. Learn the sound your gears make when all is working well and tune your ears to notice chain chatter and other metal on metal noises when things aren t perfectly aligned.

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To get these gear ratios modern mountain bikes rely on a combination of three sprockets of different sizes in their fronts and nine in their backs.

How do mountain bike gears work. Listen to your bike. Bicycle external drivetrains explained an external drivetrain with a. It is much easier to shift between the gears on the rear. This may seem like overkill but there s a good reason for all these gears.

Play around with the gears. Types of gears on a mountain bike. I m referring to how to shift gears on a mountain bike like literally how we actually select the gears. There are a few different systems that bikes use to change gears though by far the most common is the external drivetrain.

The front sprocket is difficult to shift under load. So if we have 3 sprockets on the front and 7 cogs on the back then it s 3 x 7 21 gears. Succeed at this and you ll avoid the wearing out of freewheel cassette cogs derailleur cages and even chain rings. Bikes generally have 1 3 18 21 24 or 27 speeds.

They allow riders to pump the pedals on their mountain bikes at a steady consistent pace. Consult your bike shop at the time of purchase on how yours work or simply jump on your bike make sure to pedal and push your shifters to get a sense of how they function. You can think of gears as the same thing as speeds a bike with 18 gears is an 18 speed bike. First let s get our terms straight so we re on the same page.

If riders are cranking up a hill they ll probably chose the smallest sprocket on the front and shift between the nine gears that are available on the rear since they can do this without easing off on the pedals. There are a couple of different options when it comes to types of mountain bike gears.