andrewsdad
Well-Known Member
Hi I was hoping you guys can advise me, your advice before has always been spot on. Anyway I've decided to change my rear 8speed cassette 11/27 to a 12/26 do I need to shorten or lengthen my chain. Many thanks guys.
Great thankyou for your replyThe smallest chain difference is 2 links, which equates to a 4T difference on sprocket or chain ring. For 1T difference on your larger size, no change necessary.
I agree, but you might want to define a link. There is confusion around this one.The smallest chain difference is 2 links, which equates to a 4T difference on sprocket or chain ring. For 1T difference on your larger size, no change necessary.
No, a link is a two-part affair. One link is one inch in length. Think of a half-link chain and it will be clear.Each link is 1/2" so two are needed when adjusting length! One is an inner one, the other an outer, so links work in pairs.
Many thanksMore than you could ever possibly need to know about chains, there length and what a link is http://www.machinehead-software.co.uk/bike/chain_length/chain_length_calculator.html
Thanks.parktools has 3 different methods of determining chain length
If a chain link is 1" (one pair) then a new chain at 116L is 116" or 9'8" long.No, a link is a two-part affair. One link is one inch in length. Think of a half-link chain and it will be clear.
That's the wrong way of looking at it. A link is the smallest unit that can be removed so that the chain can still form a continuous loop. A link is a two-part affair.If a chain link is 1" (one pair) then a new chain at 116L is 116" or 9'8" long.