# What do the numbers mean on bike gears?

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## What gears for what speed on bike?

While the rider should change the gears more in instincts and the ideal speed varies depending on the situation, the approximate speed range are like this: 0 to 15 km/h for first gear, 15 to 30 km/h for second gear, 30 to 40 km/h for third, 40 to 55 km/h for fourth, and 55 km/h and higher for fifth and sixth gears.

## Which is gear 1 on a bike?

First gear is the lowest gear and the easiest for climbing hills. Most multispeed bikes possess seven gears but may have up to nine. If your drive chain is on the smallest sprocket, which is the hardest gear, moving it to first gear causes the drive chain to climb up six spaces on the cassette if you have seven gears.

## Are 21 speed bikes fast?

7 Speed vs 21 Speed Bikes

In terms of how the number of gears affects the overall ride of the bike, a 21-speed is generally faster with smoother transitions and pedaling. The 7-speed is adequate for most riders, which is why many people choose the slower option.

## How do I know what speed my bike is?

Multiply the front gear number by the rear gear number to get the number of speeds. For example, if you have two front gears and five back gears, you have a 10-speed bike. If you have one front gear and three back gears, you have a 3-speed bike.

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## Which gear is high or low?

It simply means that you change to a high gear (4 or 5) or a low gear (1 or 2). The basic rule is that you change up through the gears as the speed of the car increases and down when you need more power from the engine. For example, you would change down when climbing a hill or pulling away at low speed.

## What gear ratio is best for climbing?

A common setup on a road bike adapted for climbing is a compact road crankset with 50-34 chainrings and an 11-32 cassette, which gives a lowest gear of 34:32 or a ratio of 1.06:1.