Kayaking on Swan Pond River and Swan Pond - in West Dennis MA. Put in at Beach Road. in West Dennis MA. Paddle up to Swan. Pond and return. Estimated round trip. distance = 6+ miles. South Village.
There are 2 components to Bottom Bracket (BB) size, the BB shell width of the frame and the spindle length. Bottom Bracket shell width: The BB shell is the frame tube into which the BB threads. It will measure 68mm, 70mm or 73mm wide.
There are two main bottom bracket types. More common on older bikes is the cup and cone style shown to the left. On modern bikes the most common is the sealed cartridge bearing shown to the right. The easiest way to identify which you have is to look at the bottom bracket on the non-drive side of the bike.