Derailleur gears chain slack. Cage length determines the total capacity of the derailleur, that is the size difference between the largest and smallest chainrings, and the size difference between the largest and smallest sprockets on the cogset added together. A larger sum requires a longer cage length. Typical cross country mountain bikes with three front chainrings will use a long cage rear derailleur. A road bike with only two front chainrings and close ratio sprockets can operate with either a short or long cage derailleur, but will work better with a short cage. Manufacturer stated derailleur capacities are as follows: Shimano long
English translations of Asterix "Why is that man wearing a melon?" This relies on the fact that the French word for melon is "also" the name for the iconic British bowler hat; with no way to convey this in the English translation, in the British edition Obelix says, "I say, Asterix, I think this bridge is falling down" referring to the children's rhyme "London bridge is falling down", leaving the original joke incomplete. In the panel shown, the reply of the British man on the right was "Rather, old fruit!", in some publications of the book; a good pun and typical of the way