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.
The industry responded by making middleweight tires marked 26 x 1.75 to fit the same rims. Although they are still called 26 inch, these tires are actually 25 5/8, not 26. This same rim size was adopted by the early pioneers of west-coast klunkers, and became the standard for mountain bikes. Due to the appetite of the market, you can get tires as narrow as 25 mm to fit these rims, so you wind up with a 26 inch tire that is more like 24 7/8 in actual diameter! A second number or letter code would indicate the width of the tire.