I'm still trying to understand if this TY501 will work in place of my TY30. crankset. I have disassembled the bottom bracket. It is not a sealed unit so, axle with caged bearings. The axle length is 124mm, BB is 68mm. I can look up the specs on the TY501 and TY301 but can't find specs on the TY30. Here's the link to the one I am looking at.
Amazon.com : SHIMANO Shim CKST Tourney 170 28/38/48 FC TY501 6/7/8SPD W/C Guard : Sports & Outdoors
Last edited by louky; 08-29-22 at 02:11 PM.
Reason: Forgot link