Derailleur gears a detent or ratchet mechanism which stops the gear lever, and hence the cable and the derailleur, after moving a specific distance with each press or pull. Indexed shifters require re-calibration when cables stretch and parts get damaged or swapped. On racing bicycles, 10-gear rear cassettes appeared in 2000, and 11-gear cassettes appeared in 2009. Most current mountain bicycles have either. Many modern, high-end mountain bikes have begun using entirely one chain ring drivetrains, with the industry constantly pushing the number of rear cogs up and up, as shown by SRAM's Eagle groupsets (1 by 12) and Rotor's recent 1
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