What number chain is on a bicycle?

How do I know which chain for my bike?

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.

Are 7 and 8 speed chains the same?

5, 6, 7 and 8 speed chains

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. … Going further narrower, like a 10, or 11 speed chain on an 8 speed cassette can and often does work.

How do I know my chain size?

To measure the chain size, if you have just the sprocket, use calipers to measure between the teeth. Measure from center to center of where the chain roller would set between the teeth that will give you the pitch. Once you know the pitch you can determine what chain size you would need.

How do I know if my bike chain is too short?

You should also see two slight bends at each jockey wheel of the rear derailleur. If the chain is too short, this shift is difficult to make and the derailleur cage is stretched out and almost parallel to the chainstay. If the chain is really short, then you might not even be able to shift into the largest cog.

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How many links do I need in my bike chain?

Bicycle drive chain length

A new bicycle chain usually comes with 116 links. This is long enough for the biggest chainrings and for most distances of rear wheel from front chainrings. So for optimal length a new chain is usually shortened from the 116 links that come in the box.

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.

Will a 9 speed chain fit 8 speed?

9 speed chain on an 8 speed cassette is just fine; it’s the wider 8 speed which won’t fit the sprocket spacing on a 9 speed cassette.

Can I use any 12 speed chain?

A Shimano 12-speed chain can work with a 12-speed SRAM chainring if the quick-link is replaced with a SRAM or KMC one. The downside of this approach is that the drivetrain will be louder and wear out faster as there’s extra contact between the teeth of the chainring and the inner plates of the chain.

Which is better Shimano or SRAM?

Shimano and SRAM both make quality products, but their approach and styles are different. Looking at the current component landscape, it can be said that Shimano is generally the more conservative of the two. Over the last decade, SRAM has pursued drivetrain innovation more aggressively.

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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