Chain Length

[Balooba]

Hi all

 

I bought myself a 11/46T Sunrace cassette (new) to be fitted on a Momsen Vipa.

 

Currently have the XT 11/40 cassette on. Bought the bike secondhand so not sure on the km's on it. 

 

Derailleur - XT 8000 - long cage

Chainring - Oval 32t

 

What chain length should I purchase ,without killing the bank, that will fit my chainring/derailleur setup? 

 

KMC or Shimano for the Sunrace cassette?

 

Thanks in advance.

[MudLark]

I think you need to know the chain stay length as well to calculate required chain length.

[MudLark]

You can maybe use this calculator: https://www.bergfreunde.eu/chain-length-calculator/

[Balooba]

You can maybe use this calculator: https://www.bergfreunde.eu/chain-length-calculator/

 

Thanks.

 

Chain stay = 440 with 46 cassette and 32 chainring recommend 110 links for 10 speed. +2 links for 11 speed.

 

So if their /my calculations are correct, I should get a 112 link chain?

[sirmoun10goat]

Given the rate of expansion in teeth in cassettes, I need to use the calculator in reverse - 2 is my cassette teeth and 3 my chain ring teeth

[Tatt]

This might help:

 

https://si.shimano.com/pdfs/dm/DM-CN0001-05-ENG.pdf

 

And KMC chain should be just fine.

 

Tom