I’m refurbishing an old Kona bike. Measured the bottom bracket shell at 68mm. I ordered a Raceface Aeffect crankset with a 137mm spindle size. But when I install everything there a good 6mm of play in the spindle.
How do I find the correct spindle size?
by cycles_commute
2 Comments
https://res.cloudinary.com/fox-factory/image/upload/v1600385412/images/d9715b92f0f94eadb807eb34529905adfc447228_Crank_Q_factors_and_chainlines___16th_April_2020.pdf
Table 7 on page 7 says you need 3x 2.5mm spacers between the BB and BB shell.
2x on the drive side
1x on the non-drive side.
You need some BB spacers. 2×2.5mm on the drive side and 1×2.5mm on the non drive side. All sitting between their respective cup and the frame.