internal gear(ing)
1List of Air Gear characters — This is a list of characters in the anime/manga series Air Gear. Contents 1 Major teams 1.1 Kogarasumaru 1.1.1 Itsuki Minami 1.1.2 Kazuma Mikura …
2Bicycle gearing — The gearing on a bicycle is the selection of appropriate gear ratios for optimum efficiency or comfort. Different gears and ranges of gears are appropriate for different people and styles of cycling. Multi speed bicycles allow gear selection to… …
3Timeline of historic inventions — The timeline of historic inventions is a chronological list of particularly important or significant technological inventions. Note: Dates for inventions are often controversial. Inventions are often invented by several inventors around the same… …
4List 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 …
5Pistonless rotary engine — This article is about internal combustion engines that do not use conventional pistons. See also rotary engine (disambiguation) for other uses of this term, and rotary engine for the World War I aircraft engines by that name. A pistonless rotary… …
6Groupset — A groupset or gruppo (from the Italian for group , often misspelled grouppo) is a bicycle component manufacturer s organized collection of mechanical parts. It generally refers to all of the components that make up a bicycle excluding the bicycle …
7Gerotor — A gerotor is a positive displacement pumping unit. The name gerotor is derived from Generated Rotor . A gerotor unit consists of an inner and outer rotor. The inner rotor has N teeth, and the outer rotor has N+1 teeth. The inner rotor is located… …
8History of perpetual motion machines — The history of perpetual motion machines dates back to the Middle Ages. For millennia, it was not clear whether perpetual motion devices were possible or not, but the development of modern thermodynamics has indicated that they are impossible.… …
9Portable engine — A portable engine is a small steam engine, mounted on wheels or skids, which is used for driving machinery using a belt from its flywheel. It is not self propelled and is towed to the work site by horses or bullocks, or even a traction engine.… …
10Backpack — A backpack (also called rucksack, knapsack, packsack, pack, or Bergen) is, in its simplest form, a cloth sack carried on one s back and secured with two straps that go over the shoulders, but there can be exceptions. Light weight types of… …
