Readers ask: What Size Chain For Single Gear 20″ Bmx Bike?

What size chain do I need for my BMX?

BMX chain sizing The majority of BMX chains – both traditional and half-link – are the standard 1/8” width. Narrower 3/32” chains are available for weight-shaving racers, as are more heavy-duty 3/16” chains, but for most riders the standard is fine.

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 chain should I use for single speed?

1/8″ chains are used exclusively for single speed setups.

Are all single speed bike chains the same size?

All modern bicycle chains are made to the “one-half inch pitch” standard, meaning from rivet to rivet is nominally 0.5 inches. The sprocket teeth are cut for this same one-half inch standard to accept bicycle chains. However, this does not mean all makes and models of chains are interchangeable.

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Are all BMX Sprockets the same size?

SPROCKET (CHAINWHEEL) Old BMX bikes were equipped with 48T (teeth) sprockets, however this is not a standard nowadays. Most common sprocket size today is 25T or 28T with 23,7mm bore. However, if there’s more than one tightening hole on the bolt drive sprocket, then the lifespan is pretty much the same.

What is the difference between 1 8 and 3/32 chain?

Bicycle chain comes in two basic widths: 1/8″ chain is used on most single-speed bicycles, and bicycles with internal gearing. 3/32″ chain is used on derailer equipped bicycles that have more than 3 speeds.

What is the standard bike chain size?

Chains come in 3⁄32 in (2.4 mm), 1⁄8 in (3.2 mm), 5⁄32 in (4.0 mm), or 3⁄16 in (4.8 mm) roller widths, the internal width between the inner plates. 1⁄8 in (3.2 mm) chains are typically used on bikes with a single rear sprocket: those with coaster brakes, hub gears, fixed gears such as track bicycles, or BMX bikes.

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.

How tight should a chain be on a single speed bike?

Chain Tension There should be approximately one half inch of movement in the chain up and down at a point half way between the front and rear sprockets. To change the tension loosen one of the axle-nuts and move the wheel forward or backward slightly and snug it up again.

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Can I use an 8 speed chain on a single speed bike?

Since single speed chain is by far the cheapest, there is no need to experiment with multi speed chains. However, 6 to 8 speed chains can fit some single speed bicycles – depending on the chainring width.

How long should a single speed chain last?

You can get about 1,000 miles from a chain if you keep it clean. Dirt is what causes the wear so if you let the chain get nasty wear will be reduced quite a bit. In the course of the chains life you will also need to adjust tension a few times as you go through the wear cycle.

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.

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.

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