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* Check wheels (skewers) are tight
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* Check brakes work and are not loose (levers and callipers)
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* Check handlebar is tight and not loose
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* Check gears are working and changing properly
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* Check and adjust tire pressure
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I concentrate on the drive train, making sure I keep the chain clean and
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lubed. it is the part that takes the abuse, wear and tear. A happy chain
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keeps your cogs and chainrings happy too. Be sure to replace the chain when
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it is 'stretched', which means that 12 links is any longer than 12 and
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1/16th (309mm) inches. Any more and it starts to wear on your gears.
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A bike shop mechanic I talked to says he just replaces his chain every three
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months or so (depending on conditions and riding style) to make sure he
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maximizes the life of those other components.
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12" (304.8 mm) - original ?
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12 1/16" (306mm) - chain
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12 1/8'' (308mm) - everything
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4 links - 6cm => 12 - 18
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