Chainring switch



Aaron09

New Member
Jan 23, 2017
5
0
1
30
I am going from a 3 chainring to a 1 chainring. My current BB is 68mm with the spindles measuring 122.5. I am looking to get a new bottom bracket, but I am unsure what size. Any thoughts? The original chainring was 48/38/28 teeth and the new one will be 39t.
 

dabac

Well-Known Member
Sep 16, 2003
2,298
288
83
52
To me it wouldn't make sense to replace a 38 with a 39 unless the 38 was due for replacement anyhow.
It's a 2.6% difference, far less (say 1/3) than the regularl difference between gears in a cassette rear.

If you find the big and the small so horribly disturbing, why not simply pull them off, switch to a shorter set of chainring bolts and call it done?
 

Similar threads