Old 07-03-22, 04:53 AM
  #1  
alexk_il
Full Member
 
Join Date: Jun 2022
Posts: 220
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 142 Post(s)
Liked 34 Times in 26 Posts
Need help with chainline/bottom bracket calculations

I'm currently riding a 10yo Boardman hybrid bike with 10 speed 11-32 cassette. Will replace the cassette with Shimano M8000 11-42t 11speed cassette.

As this forum pointed out to me, the new cassette will fit my 10 speed hub because the lower gear has a recessed wide opening on the back:
​​​​​​
https://www.bikeforums.net/bicycle-m...b-upgrade.html

The bike currently has 44mm chainline before the swap, I assume the center of the new cassette would be closer to the rim. Is this correct? If yes, by how much?

I'm replacing the bottom bracket too, might be able to compensate by getting the BB in a different size.
alexk_il is offline