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Reverser is a control device, typically a lever, used to set the moving direction of a motorized rail vehicle forward, reverse or neutral. The latter typically separates the wheels from the powertrain altogether. Reverser should never be operated when a vehicle is in motion, to avoid catastrophic damage to the powertrain. For the same reason, throttle and dynamic brakes typically need to be disengaged for the reverser to be operable.
Reverser is a component of {{pll|Rail Vehicle Types|motorized rail vehicles}} used to set their moving direction. It is typically controlled by a lever found in the vehicle's {{pll|Rail Vehicle Types|cab}}. Besides forward and reverse, reversers also feature a neutral setting, which disengages {{pll|Rail Vehicle Types|drivetrains}} altogether, akin to a {{pll|Mechanical Transmission|gearbox}}.


On steam engines, the equivalent of the reverser is called cutoff. It is a bit more complex in that it determines the steam intake duration per cylinder cycle.
Vehicles equipped with a reverser can run both forward and backward with equal capacity, and are even equipped with {{pll|Headlights & Cab Lights|lights}} on both ends for this purpose. Depending on the vehicle design, the only difference when changing orientation can be in driving visibility, and {{pll|Powertrain Overheating|cooling behavior}}.


{{See also|Throttle|Dynamic Brake|Cutoff|Steam Drivetrain|Traction Motors|Hydraulic Transmission|Mechanical Transmission}}
Reversers should never be operated when vehicles are in motion, to avoid {{pll|Mechanical Powertrain Damage|catastrophic damage to the powertrain}}. For the same reason, to operate the reverser, {{pll|Throttle|throttle}} and {{pll|Dynamic Brake|dynamic brakes}} need to be disengaged.
[[Category:Powertrains|2]]
 
On {{pll|Steam Overview|steam engines}}, {{pll|Cutoff|cutoff}} is the closest feature to a reverser, albeit with more functionality.
 
[[Category:Powertrains|3]]

Revision as of 16:47, 12 March 2025

Reverser is a component of motorized rail vehicles used to set their moving direction. It is typically controlled by a lever found in the vehicle's cab . Besides forward and reverse, reversers also feature a neutral setting, which disengages drivetrains altogether, akin to a gearbox .

Vehicles equipped with a reverser can run both forward and backward with equal capacity, and are even equipped with lights on both ends for this purpose. Depending on the vehicle design, the only difference when changing orientation can be in driving visibility, and cooling behavior .

Reversers should never be operated when vehicles are in motion, to avoid catastrophic damage to the powertrain . For the same reason, to operate the reverser, throttle and dynamic brakes need to be disengaged.

On steam engines , cutoff is the closest feature to a reverser, albeit with more functionality.