Probably the no of teeth on his chainring!Welcome . Just out of curiosity looking at your username are you 57 or born in 1957. Or maybe just random digits lol
Thats very personal !!! lol I'm 57 and I feel it sometimes after a long ride, well for me.Welcome . Just out of curiosity looking at your username are you 57 or born in 1957. Or maybe just random digits lol
Thats very personal !!! lol I'm 57 and I feel it sometimes after a long ride, well for me.