It's better to have it tight. If it's loose you're in risk of throwing the chain due to the lack of a derailleur, which is an inconvenience on a singlespeed and a potentially lethal problem on a fixie.
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It's better to have it tight. If it's loose you're in risk of throwing the chain due to the lack of a derailleur, which is an inconvenience on a singlespeed and a potentially lethal problem on a fixie.