# What Size Bike Chain Do I Need? (Correct answer)

The method used for chain sizing is determined by the range of gears available in the system. For bicycles with rear sprockets with 36 teeth or fewer teeth, the standard method is to measure using the largest rear sprocket and the largest front ring as a point of comparison. Two rivets are placed to this (each one inch in length) to mark the location where the chain will be cut.
The approach used for chain sizing is dependent on the range of gears available in the system under consideration. If you have a bike with a rear sprocket that has 36 teeth or less, the standard method is to measure it using the largest rear sprocket and the largest front ring as a guide. For the area where the chain will be severed, two rivets (one inch) are placed to this.

• The exact length of a chain is not important when purchasing one because they all come in a predetermined length. (Typically 114 1/2″ links, although occasionally 120 1/2″ links are used.) In some circumstances, such as tandems and recumbents, you may need to link two chains together in order to have enough length.

## How do I know my bike chain size?

Make a multiplication table using the multiplying chainstay length, the split number of teeth for the chainring and rear sprocket, as well as one additional number for good measure (or 2.5 cm). As a consequence, you’ll have the perfect chain length for your bike. For example, to reach 53.5, you’d add 32.5, 13, 7, and 1 together. The chain should be 53.5 inches (135.589 cm) in length.

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## Are bike chains a standard size?

All current bicycle chains are manufactured to the “half inch pitch” standard, which means that the distance between each rivet is nominally 0.5 inches. When it comes to bicycle chains, the sprocket teeth are cut to the same one-half inch standard as the chain itself. There are two fundamental types of bicycle chains: “one-speed” chains and derailleur chains. One-speed chains are the most common.

## How do I know what chain size to get?

The pitch (chain size) is determined by measuring the distance between any three consecutive rivets and dividing the result by two, as shown below. These little, circular pins/studs are used to join the chain segments together, and they are made of brass. Measure the distance between the first and third links, then split that number in half to get the chain pitch.

## What bike chain length should I get?

As a last resort, to make absolutely certain that the chain is of sufficient length, it should be wrapped around both the largest chainring in the front and the largest sprocket in back, and then extended by one inch, or one link, due to the derailleur (one link consists of a pair of outer and inner plates, as shown in the picture below, and it is frequently used).

## How do you know what bike chain to buy?

What criteria should I use? The “speed” of the chain is the first factor to consider when selecting a bike chain; this is because the speed of the chain affects the breadth of the chain. It is thinner than a 9 speed chain, for example, since the sprockets on an 11 speed cassette are spaced closer together than those on a 9 speed chain, for example.

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## What is a 3/32 bike chain?

Derailer-equipped bicycles with more than three cogs at the back end are fitted with 3/32″ (0.094″ 2.30 mm) chain. Those bicycles with nine or more rear sprockets are often fitted with a derailer and utilize a chain that is even narrower, typically. 090″ (or 2.29 mm) between the inner plates.

## Are 7 and 8 speed chains the same?

A single chain with eight gears is used by all three manufacturers: Shimano, SRAM, and Campagnolo. The chain for a 7-speed bike is somewhat broader – 7.3 mm – whereas the chain for a 6-speed bike is significantly wider – 7.8 mm. Going even tighter, such as using a 10- or 11-speed chain on an 8-speed cassette, can and frequently does result in success.

## Are 11 and 12 speed chains the same?

This is done by making the outside links of the chain thinner than the interior links of the chain. In the end, single-speed chains are the strongest since they can be made quite thick due to the fact that there is only one gear at the back of the bike. A 12-speed chain has a width of around 5.25mm, but an 11-speed chain has a width of approximately 5.62mm. That’s a 0.37mm discrepancy between the two measurements.

## What size chain is bicycle chain?

Standard 606 (metric) #8, where the 8 represents the distance between two pin centers. The chain in use on modern bicycles has a 12-inch (12.7-mm) pitch, which is defined as the distance between two pin centers from one another. It is ANSI standard #40, where the 4 in “#40” indicates the pitch of the chain in eighths of an inch; and it is standard 606 (metric) #8, where the 8 represents the pitch in sixteenths of an inch.

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## What’s the difference between 40 and 41 chain?

The number 40 will be the heaviest chain in this division. This will be beneficial when using thicker sprockets since there will be more space between the side plates. The #41 chain will have the same appearance as the #420 chain, but it will be shorter.

## What happens if bike chain is too long?

You will have difficulty shifting gears if your bike chain is too long. This is because the derailleur will not be able to take up the excess chain length as you shift gears. As a result, it is possible that the chain will continue to slide. Your front and rear derailleurs are not correctly positioned on your bicycle. Damage has occurred to the chainring, derailleur, or chainrings itself.

## How long should my chain be?

Following the acquisition of a measurement, it is recommended that you select a necklace size that is at least the second size larger than your neck size. Example: If you have an 18-inch neck, you should generally choose for a chain that is 20 inches or more in length. An 18-inch chain would be uncomfortable to wear.

## Do I need to shorten my bike chain?

Except if the chain was already too short, you will almost certainly have to remove a few links. When using a little/little combo, the chain does not need to be any shorter as long as there is no excessive stress on the chain and the chain does not rub against the RD cage.