Bottom Bracket. 異音の原因を追求するためのメンテ。犯人は BB cup の可能性が高いな。 (Taken with instagram)
黒こんぶ
This is a tumblelog, kinda like a blog but with short-form, mixed-media posts with stuff I like. Scroll down a bit to start reading, or a bit more to read more about me.
