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  2. Gear train - Wikipedia

    en.wikipedia.org/wiki/Gear_train

    For the wide-ratio transmission, the first gear ratio is 4:1 or 4, and in second gear it is 2:1 or 2, so the progression is equal to ⁠ 4 / 2 ⁠ = 2 (or 200%). For the close-ratio transmission, first gear has a 4:1 ratio or 4, and second gear has a ratio of 3:1 or 3, so the progression between gears is ⁠ 4 / 3 ⁠, or 133%. Since 133% is ...

  3. World of Warcraft: Cataclysm - Wikipedia

    en.wikipedia.org/wiki/World_of_Warcraft:_Cataclysm

    On September 7 (8 in Europe), the first pre-Cataclysm quest chains were released to live servers, in the Dun Morogh and Durotar zones. A few days later, Patch 4.0.1 was released to public test realms, indicating that a release date might be in the not-too-distant future. [14] [15]

  4. Cessna CitationJet/M2 - Wikipedia

    en.wikipedia.org/wiki/Cessna_CitationJet/M2

    Its FJ44 engine has a 16:1 overall pressure ratio and a 2.58:1 bypass ratio. [ 8 ] [ 11 ] Early CitationJet models have a novel design feature to reduce weight: rather than conventional thrust reversers , the aircraft are equipped with thrust attenuator paddles that pivot from the rear fuselage, similar to those used on the Cessna T-37 Tweet ...

  5. Cataclysm: Dark Days Ahead - Wikipedia

    en.wikipedia.org/wiki/Cataclysm:_Dark_Days_Ahead

    After the Cataclysm author ended the development around 2012, the game's community forked the game into a new repository called Cataclysm: Dark Days Ahead in early 2013. In June 2013, a successful crowdfunding on Kickstarter [12] raised $9,492 (beyond the $7,000 goal) for the payment of a full-time developer for 3.5 months. View with graphical ...

  6. Chain drive - Wikipedia

    en.wikipedia.org/wiki/Chain_drive

    Chain drive was the main feature which differentiated the safety bicycle introduced in 1885, with its two equal-sized wheels, from the direct-drive penny-farthing or "high wheeler" type of bicycle. The popularity of the chain-driven safety bicycle brought about the demise of the penny-farthing, and is still a basic feature of bicycle design today.

  7. List of gear nomenclature - Wikipedia

    en.wikipedia.org/wiki/List_of_gear_nomenclature

    A face gear set typically consists of a disk-shaped gear, grooved on at least one face, in combination with a spur, helical, or conical pinion. A face gear has a planar pitch surface and a planar root surface, both of which are perpendicular to the axis of rotation. [ 1 ]

  8. Linkage (mechanical) - Wikipedia

    en.wikipedia.org/wiki/Linkage_(mechanical)

    For a simple closed chain, n moving links are connected end-to-end by n+1 joints such that the two ends are connected to the ground link forming a loop. In this case, we have N=j and the mobility of the chain is = = An example of a simple open chain is a serial robot manipulator.

  9. Key (engineering) - Wikipedia

    en.wikipedia.org/wiki/Key_(engineering)

    In mechanical engineering, a key is a machine element used to connect a rotating machine element to a shaft.The key prevents relative rotation between the two parts and may enable torque transmission.