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Well im getting a new chain for my bike its 18 gears and i looked on eBay it said 18 speed is it the same thing?
Wiki User
∙ 7y ago
Bicycles have become a bit tricky over the years.
There are two different kinds of 18-speeds:
- One that has three chainrings up front and six sprockets at the rear.(3x6=18),
- One that has two chainrings up front and 9 sprockets by the rear.(2x9=18)
And a chain for a 6-speed rear won't fit on a 9-speed rear, it'll be too wide.
You MIGHT be able to run a chain for a 9-speed rear on a 6-speed.
Chains are quite cheap, so it doesn't make much sense to get one from ebay.
There are two things to think about when getting a new chain:
- the chain and the sprockets wear together, replacing only one often leads to chain skip and poor shifting
- you've got to get the chain length about right. Too short and you might burst your rear derailer, too long and you can get chain rub on some gears.
Chains are usually sold over-long, and needs to be cut to length with a chain breaker tool before being joined back together.
Wiki User
∙ 7y ago
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