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Drive rods transfer engine power to other devices and must be manufactured to prevent twisting or sagging. They vary in length and material, and the design determines the amount of torque they can handle. The gap between the motor and drive point affects the force required for rotation.
A pushrod is used in torque applications to deliver the power created by the engine through the engine head. The transmission rods are the process element that actually transfers the torque supplied by the motor in power. Drive rods are used whenever the actuation force of an engine needs to be transferred to another medium, such as a gear train that turns an axle or a device that extends away from the engine.
Since the distance between the motor and the device, the horsepower of the motor determines how much power is transferred to the device, it is imperative that the drive rod be manufactured in a way to avoid twisting or “sagging” in the torque transfer process. Any twist allows for a dramatic decrease in the amount of power delivered through the drive shaft. As a result, most drive rods are hollow tubes because they prevent any twisting or bending in the drive rods unless a large amount of force is applied.
Depending on the amount of power delivered and the application the rod is being used for, the rod itself can be manufactured from heat treated steel or an alloy that will meet the usage requirements. The design and material that the drive rod is made from will directly determine how much torque the rod can handle. If the amount of power is sufficient to turn the operating rod but not enough to operate the operating point, the operating rod will often absorb the energy created by the operating force and twist, snap or damage the points connection at the driving force and the driving point.
The drive rods also vary in length, depending on the application they were designed for. The required distance that the power transfer from the driving force must travel to successfully transfer power to the point of transmission is also essential when designing rods. Also, the gap between the motor that rotates the rod and the drive point to which the device is attached determines the amount of force the motor must deliver to the drive rod to rotate the drive point with sufficient force. for the application.
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