Some horseshoes have " caulkins ", " caulks ", or " calks ": protrusions at the toe and / or heels of the shoe, to provide additional traction.

Some horseshoes have " caulkins ", " caulks ", or " calks ": protrusions at the toe and / or heels of the shoe, to provide additional traction.

* Some racing cars, especially Formula One cars, which use upside-down wings ( or airfoils ) to provide greater traction at high speeds

Some engines, particularly medium-and large-capacity diesel engines built for industrial, marine, power generation, and heavy traction purposes ( large trucks, locomotives, heavy equipment etc.

Some other forms of articulation, notably the Mallet, tend to move the centre-of-gravity outside the centre-line on tight curves, leading to problems with traction and stability.

Some trail runners attach lightweight crampons to the bottom of their shoes to aid with traction in the snow and on ice.

Some automatic locking differential designs ensure that engine power is always transmitted to both wheels, regardless of traction conditions, and will " unlock " only when one wheel is required to spin faster than the other during cornering.

* Some utility vehicles such as tow trucks, forklifts, tractors, and heavy equipment use locking differentials to maintain traction, especially when driving on soft, muddy, or uneven surfaces.

Some luxury options featured on the E32 included integrated telephone and fax machines, a wine cooler, double glazing, traction control system, and a system that automatically increased spring pressure on the windscreen wipers, to keep them firmly pressed on the glass at Motorway speeds.

Some traction control devices used are:

Some other urban railways had been constructed for electric traction: in 1890 the City and South London underground tube had opened with electric traction, followed in 1893 by the more local Liverpool Overhead Railway.

Some electric plows can take their power from a locomotive, while others are semi-permanently coupled to power units, generally old locomotives with their traction motors removed ; these are colloquially called " snails.

Some of these locomotives survived in service up to the end of steam traction on the JNR in 1974.

Some late-model F3s had the same D27 traction motors used in the F7, and were nicknamed F5 models.

Some of these options included a 3. 5 L EGJ 24-valve V6 engine, body-colored grille, side mirrors and trim, traction control, aluminum wheels, integrated fog lights, and 8-way power adjustable front seats, premium sound systems with amplifiers, and automatic temperature control.

Some traction cities of the traction era bear present day names, but some such as Airhaven and Motoropolis are invented.

Some engines also use cast iron crankshafts for low output versions while the more expensive high output version use forged steel.

Some 19th-century or earlier experimental engines used external flames, exposed by valves, for ignition, but this becomes less attractive with increasing compression.

Some layout engines such as Trident / MSHTML and Presto are associated primarily or exclusively with a particular browser such as Internet Explorer and Opera respectively.

Some engines convert heat from noncombustive processes into mechanical work, for example a nuclear power plant uses the heat from the nuclear reaction to produce steam and drive a steam engine, or a gas turbine in a rocket engine may be driven by decomposing hydrogen peroxide.

Some engines ( air or water cooled ) also have an oil cooler.

" Some unusual engines ", 1975 The Institution of Mechanical Engineers, London.

Some specialised search engines such as Google Scholar offer a way to facilitate searching for academic resources such as journal articles and research papers.

Some aviation engines as well as some early luxury cars have had dual-plugged systems with one set of plugs fired by a magneto, and the other set wired to a coil, dynamo, and battery circuit.

Some real-time software 3D engines based on ray tracing have been developed by hobbyist demo programmers since the late 1990s.

Some engines were equipped with a switch that cut out only some rather than all of the cylinders to ensure that the engine kept running and did not oil up.

Some search engines apply improvements to search queries to increase the likelihood of providing a quality set of items through a process known as query expansion.

Some SSTO vehicles use the same engine for all altitudes, which is a problem for traditional engines with a bell-shaped nozzle.

Some SSTO vehicles simply use very high pressure engines which permit high ratios to be used from ground level.

Some designs for SSTO attempt to use airbreathing jet engines that collect oxidiser and reaction mass from the atmosphere to reduce the take-off weight of the vehicle.

Some commercial aircraft with turboprop engines include the Bombardier Dash 8, ATR 42, ATR 72, BAe Jetstream 31, Embraer EMB 120 Brasilia, Fairchild Swearingen Metroliner, Saab 340 and 2000, Xian MA60, Xian MA600, and Xian MA700, Fokker 27, 50 and 60.

Some of the most popular and successful online sites or search engines of the 2000s included Google, Yahoo !, Wikipedia, Amazon, eBay, MySpace, Facebook, Twitter, and YouTube.

Some search engines, like Yahoo, use automated processes to detect soft 404s.

Some 100-200 engines completed their mission on Soviet and Russian satellites until the late 1990s.

Some are carbureted, usually the smaller engines.

Some of the Shuttle systems integrated in the simulation are the main propulsion system, main engines, solid rocket boosters, ground liquid hydrogen and liquid oxygen, external tank, flight controls, navigation, and avionics.

Some search engines give a higher rank to results where the keyword searched for appears in the URL.

Some search engines like Vivísimo try to group found web pages into automated categories in an attempt to show various genres the search hits might fit.

Some older biplane designs, such as the Grumman Ag Cat and the aforementioned An-2 ( in the form of the An-3 ) are available in upgraded versions with turboprop engines.

Some small propeller-driven aircraft engines still use the updraft carburetor design.

Some lower-compression piston engines can operate on unleaded mogas, and turbine engines and diesel engines — neither of which requires lead — are appearing on some newer light aircraft.