130BCD vs. 144BCD Chainrings? (comparison & analysis)
This post presents the differences between 130BCD and 144BCD cranks and chainrings. What is BCD? BCD stands for Bolt Circle Diameter (BCD) and represents the diameter of the circle that…
Replacing a Chainring Without Removing The Cranks – Craziness or Reality?
Condensed Info:If the big chainring attaches to the drive-side crank via bolts, it's possible to replace it without removing the cranks.If the chainring is permanently attached to the cranks via…