Chain pitch is a dimension used to select a proper chain for a motorcycle. The pitch and roller width between the inner plates needs to match the manufacturer's specifications for maximum chain efficiency.
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Chain Size Definition
Chain size is a three-digit number that expresses both pitch and roller width. The first digit is the chain pitch. The second and third digits are the roller width with a decimal point implied between the numbers. The chain size can be found in the owner's manual.
Rule of Eights
Chain size uses the rule of eights. Both the pitch and roller width are divided by eight to get the dimensions in inches. A 430 chain size has a pitch of 4/8 inches and width of 3.0/8 inches.
Chain Pitch Definition
Chain pitch is the distance between the centre of any two adjoining roller pins. This dimension insures a good fit between the chain and the sprocket teeth.
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