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by Yey my favourite people! December 3, 2018
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A retarder is a device used to augment or replace some of the functions of primary friction-based braking systems, usually on heavy vehicles. Retarders serve to slow vehicles, or maintain a steady speed while traveling down a hill, and help prevent the vehicle from "running away" by accelerating down the hill. They are not usually capable of bringing vehicles to a standstill, as their effectiveness diminishes as vehicle speed lowers. They are usually used as an additional "assistance" to slow vehicles, with the final braking done by a conventional friction braking system. As the friction brake will be used less, particularly at higher speeds, their service life is increased, and since in those vehicles the brakes are air-actuated helps to conserve air pressure too.
Friction-based braking systems are susceptible to "brake fade" when used extensively for continuous periods, which can be dangerous if braking performance drops below what is required to stop the vehicle – for instance if a truck or bus is descending a long decline. For this reason, such heavy vehicles are frequently fitted with a supplementary system that is not friction-based.
Retarders are not restricted to road motor vehicles, but may also be used in railway systems. The British prototype Advanced Passenger Train (APT) used hydraulic retarders to allow the high-speed train to stop in the same distance as standard lower speed trains, as a pure friction-based system was not viable.
Friction-based braking systems are susceptible to "brake fade" when used extensively for continuous periods, which can be dangerous if braking performance drops below what is required to stop the vehicle – for instance if a truck or bus is descending a long decline. For this reason, such heavy vehicles are frequently fitted with a supplementary system that is not friction-based.
Retarders are not restricted to road motor vehicles, but may also be used in railway systems. The British prototype Advanced Passenger Train (APT) used hydraulic retarders to allow the high-speed train to stop in the same distance as standard lower speed trains, as a pure friction-based system was not viable.
by Huvudpersson July 24, 2017
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2a. A person born with a mental condition
2b. An insult commonly used as a synonym to "a stupid person", referring to them as being retarded. (The mental condition, 2a) IT IS NOT A REAL SYNONYM, IT IS ONLY USED AS ONE.
2a. A person born with a mental condition
2b. An insult commonly used as a synonym to "a stupid person", referring to them as being retarded. (The mental condition, 2a) IT IS NOT A REAL SYNONYM, IT IS ONLY USED AS ONE.
1. "When you drive downhill, you need to retard to not gain too much speed."
2a. "Jeff is a retard, school is very hard for him."
2b. "He consumed a large amount of alcoholic beverages, and has now proceeded to operate a registered motorized vehicle, I consider him to be a retard."
2a. "Jeff is a retard, school is very hard for him."
2b. "He consumed a large amount of alcoholic beverages, and has now proceeded to operate a registered motorized vehicle, I consider him to be a retard."
by Huvudpersson July 24, 2017
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by Gemunityy August 4, 2017
Get the Retard mug.by bish wtf idc idgaf August 10, 2017
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