Chain Length - Help!
02-18-21, 08:57 PM
#51
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Originally Posted by Gasman1440
....a formulae like many above mentioned is very helpful is I’m looking at changing a cassette and want to know if I need a new chain or if the existing, brand new chain, is long enough. I also have a 1X setup that had a 32t crank (9-46 cassette) that was changed to a 28t and a new chain. When I found the 28t to low my LBS installed the 32t and left the same chain. I’m having some minor issues and wonder if the chain is to tight which is another reason I was looking for a formulae. Txs
But I'm not an engineer.
02-18-21, 09:10 PM
#52
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Originally Posted by Camilo
I still don't get how a formula, with the measurements and calculations involved, would be easier or more efficient than just trying the chain and either using it as-is, shortening it, or buying a new one.
But I'm not an engineer.
But I'm not an engineer.
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02-18-21, 10:24 PM
#53
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Originally Posted by Gasman1440
I don’t think it has anything to do with being an engineer. I wanted to learn about why there is a range for how much slack and what if you dont have enough slack. The point was to learn about bikes then decide if i had to buy another chain.
For road bikes you need to have enough capacity so that you can use a range of cassette sizes. Smaller ones for flat days, bigger ones for climbing days. For modern mountain bikes there really isn't a range as there is a standard cassette that all drivetrains use, but you have to have some leeway for suspension movement.
02-20-21, 08:30 AM
#54
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Originally Posted by Gasman1440
So i should have been more specific in my question. I currently have a new SRAM Red chain that i counted to be 55 full links. It’s on a 10-28 cassette with a 48/35 crank which calculates to be a 53 full link chain. I would like to swap for a 10-33 or 10-36 cassette and am wondering if I need a new chain. My chain stay is 410mm so when i check various ways I come up with needing a chain with 55 (54.339) full links for the 10-36 and 54 for the 10-33 (actually 53.6).
So will a 55 link work with the 10-33 as it has one spare?
Will 55 work with the 10-36 if there is less then one spare?
I’m still trying to see if the Red RD will work with the 10-36, SRAM says no only the 10-33 but several people have said it will work with the 10–36, if anything you may need a longer B-screw. I have some credit and can get the 10-33 Force cassette easily but would love the 10-36. I refuse to buy a new derailure however if that’s what’s needed for a 10-36. Any thoughts, comments answers are greatly appreciated as I’m trying to learn.
Txs
So will a 55 link work with the 10-33 as it has one spare?
Will 55 work with the 10-36 if there is less then one spare?
I’m still trying to see if the Red RD will work with the 10-36, SRAM says no only the 10-33 but several people have said it will work with the 10–36, if anything you may need a longer B-screw. I have some credit and can get the 10-33 Force cassette easily but would love the 10-36. I refuse to buy a new derailure however if that’s what’s needed for a 10-36. Any thoughts, comments answers are greatly appreciated as I’m trying to learn.
Txs
02-20-21, 09:26 AM
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Txs I think i best start with the 10-33 and see, I can sell the 10-28 and play around with a 36 cassette. Txs for all the help Ive learned a lot from this.
