Gearing
121USS Timmerman (DD-828) — USS Timmerman, May 15, 1951, as it launched Career (USA) …
122County class destroyer — HMS Glamorgan Class overview Builders: Cammell Laird Swan Hunter Vickers Armstrong …
123Antikythera mechanism — The Antikythera mechanism (main fragment) The Antikythera mechanism (  / …
124Bicycle — For other uses, see Bicycle (disambiguation). A mountain bike, a popular multi use bicycle. A bicycle, also known as a bike, pushbike or cycle, is a human powered, pedal driven, single track vehicle, having two wheels attached to a frame, one… …
125List of bicycle types — This list gives an overview of different types of bicycles, categorized by function (racing, recreation, etc); number of riders (one, two, or more); by construction or frame type (upright, folding, etc); by gearing (single speed, derailleur gears …
126gear up — verb make ready or suitable or equip in advance for a particular purpose or for some use, event, etc Get the children ready for school! prepare for war I was fixing to leave town after I paid the hotel bill • Syn: ↑fix, ↑prepare, ↑set up, ↑ready …
127Orrery — This article is about the mechanical device. For the British peerage, see Earl of Orrery. A small orrery showing earth and the inner planets An orrery is a mechanical device that illustrates the relative positions and motions of the planets and… …
128Hub gear — Sturmey Archer SX3 A Sturmey Archer AM bicycle hub gear mechanism wi …
