US Patent 10071784 Bicycle frame with chain stay chamber

An apparatus including a bicycle frame including a drive side chain stay. The drive side chain stay can include a drive side chain stay chamber, an inside chain stay cutout, an outside chain stay cutout; and a dropout. The drive side chain stay can be configured such that a chain of a bicycle including the bicycle frame can be inserted through the inside chain stay cutout, the drive side chain stay chamber, and the outside chain stay cutout without breaking the chain.