# Often asked: What Number Chain Is On A Bicycle?

## What number chain do bicycles use?

The chain in use on modern bicycles has a 1⁄2 inch (12.7 mm) pitch, which is the distance from one pin center to another, ANSI standard #40, where the 4 in “#40” indicates the pitch of the chain in eighths of an inch; and is standard 606 (metric) #8, where the 8 indicates the pitch in sixteenths of an inch.

## How do I know my bike chain size?

Add the multiplied chainstay length, the divided number of teeth for the chainring and rear sprocket, and add 1 (or 2.5 cm). The result is the ideal chain length for your bike. For example, you’d add 32.5, 13, 7 and 1 to get 53.5. The length of the chain should be 53.5 inches or 135.89 cm.

## What is a 3/32 bike chain?

3/32″ (0.094″, 2.30 mm) chain is used on derailer equipped bicycles that have more than 3 cogs at the rear. Even somewhat narrower chain, typically. 090″ or 2.29 mm between the inner plates, is used for derailer-equipped bicycles with 9 or more sprockets at the rear.

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## Are 7 and 8 speed chains the same?

Shimano, SRAM and Campagnolo all use the same chain with 8 speeds. Chain for 7 speeds is a bit wider – 7.3 mm, while a 6 speed one is substantially wider – 7.8 mm. That is why the reverse is not the case and a 7 speed chain and especially a 6 speed one will not work as well on an 8 speed system.

## How often should I change my bike chain?

The 2,000-Mile Rule. To avoid this accelerated wear of your cassette and chainrings, a general rule of thumb is to replace your bike’s chain every 2,000 miles. Mind you, this is just a starting point. No two chains will wear at exactly the same rate because no two riders treat their chains the same. 4

## How strong is a bicycle chain?

Wippermann’s internal standard is 9,500-11,000 Newtons of breaking force for its bicycle chains, and they achieved that; some of the others fell short of that.

## 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.

## Are all bicycle chains the same size?

Are all bicycle chains the same size? No, all bicycle chains are not the same size. Size varies on the bike’s numbers of sprockets, speeds, the distance between the front chainring and rear cogs, and the number of teeth on them.

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## What size bike chain do I need single speed?

1/8″ chains are used exclusively for single speed setups. In addition to the other answers, I found it helpful to read that the nominal width of a chain (1/8 or 3/32) actually refers to the width of the sprocket.

## Does chain length affect gear ratio?

The size of the chainrings has a subtle effect on all gear ratios. In contrast, riders that can push bigger gears at a lower cadence are more likely to prefer bigger chainrings. However, there is more to the effect of chainring size on the gearing of the bike than simply maximising or minimising roll-out.

## Are 11 and 12 speed chains the same?

12-speed chains can operate just fine with 11-speed cassettes. The main exception are Shimano’s new 12-speed HG+ models which are heavily optimized for downshifting and thus come with custom inner plates that don’t mix well with non-Shimano 12-speed components.

## Can I replace a 7 speed freewheel with an 8 speed?

You can change to 8 speed, but a normal rear wheel for roadbikes will not fit directly into the frame because it’s 130 mm wide. Depends on the stiffness of the rear frame if it can be pushed together safely to 130 mm.

## Are KMC chains better than Shimano?

The difference between the Shimano chain and the KMC is marginal; your choice will always come to personal preference. Despite the inconvenience of adjusting the chain, the Shimano runs a lot smoother and will provide you with long-lasting use.

## Is a 7 speed bike good enough?

Every rider has his comfort level while riding, So to summarise, 7- speed is good enough on a bike. So a 7- speed bike provides the right number of speed gears with efficiency to ride on difficult terrains. As long as you are comfortable and happy with the 7- speed bike, the 7-speed will be enough for you.