Should I alter chain length for new cassette?
12-02-07, 04:17 PM
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Should I alter chain length for new cassette?
I recently switched wheelsets between my two LeMonds. Both wheelsets are Bontrager, one set Select and the other Race Lite. There is a 12-21 cassette on the Selects and a 12-25 cassette on the Race Lites. I am going to keep the 12-25 Race Lites on one bike and sell the other bike equipped with the 12-21 Selects. I switched the wheelsets straight across. Do I need to change the chain length on either/both of these bikes? Shall I simply remove a pin on each chain and check to see if the length is appropriate (yes, I know how to do that check) or, from your experience, are the cassettes close enough to leave chains as is?
Info appreciated.
Info appreciated.
12-02-07, 04:25 PM
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The difference would be 2 "half-links" which isn't enough to bother with as long as the chain on the 12x25 will let you shift into big-big with no problems. If it won't you need to add the additional links for safety.
12-02-07, 08:01 PM
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03-31-09, 08:46 AM
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reviving this to ask about the opposite extreme.
If my mtb had a 46/36/26 crankset and a 13-30 cassette, and then I modded to 46/35/24 and 12-21, would I need to shorten the chain? And are we talking a drastic shortening, or a couple of links?
btw, My derailleur is a short cage model, 28t max, fwtw.
If my mtb had a 46/36/26 crankset and a 13-30 cassette, and then I modded to 46/35/24 and 12-21, would I need to shorten the chain? And are we talking a drastic shortening, or a couple of links?
btw, My derailleur is a short cage model, 28t max, fwtw.
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Last edited by pgoat; 03-31-09 at 08:57 AM.
03-31-09, 09:18 AM
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reviving this to ask about the opposite extreme.
If my mtb had a 46/36/26 crankset and a 13-30 cassette, and then I modded to 46/35/24 and 12-21, would I need to shorten the chain? And are we talking a drastic shortening, or a couple of links?
btw, My derailleur is a short cage model, 28t max, fwtw.
If my mtb had a 46/36/26 crankset and a 13-30 cassette, and then I modded to 46/35/24 and 12-21, would I need to shorten the chain? And are we talking a drastic shortening, or a couple of links?
btw, My derailleur is a short cage model, 28t max, fwtw.
-R
03-31-09, 09:20 AM
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reviving this to ask about the opposite extreme.
If my mtb had a 46/36/26 crankset and a 13-30 cassette, and then I modded to 46/35/24 and 12-21, would I need to shorten the chain? And are we talking a drastic shortening, or a couple of links?
btw, My derailleur is a short cage model, 28t max, fwtw.
If my mtb had a 46/36/26 crankset and a 13-30 cassette, and then I modded to 46/35/24 and 12-21, would I need to shorten the chain? And are we talking a drastic shortening, or a couple of links?
btw, My derailleur is a short cage model, 28t max, fwtw.
The thing to remember is the 1 inch minimum change in chain length equals 4T of wrap..
