Engine redline

All engines have a redline, which is the maximum rpm value they can accommodate. Beyond the
redline, the engine will explode. Since you would probably prefer that your engine not explode, you
have to keep an eye on the redline, especially in amanual-transmission car. When you shift gears in a manual transmission car, you're making sure
that the engine stays below the redline. To shiftgears, you move the gear shift and hold down the clutch. The shift lever controls rods that control
forks that engage the gears. The clutch is what connects the engine to the transmission. The transmission's input shaft has to spin at the same
rpm as the engine. In a five-speed transmission,
there are five different gear ratios that relate to the input shaft in order to yield a different rpm value for the output shaft.

Despite the redline guideline, there is still only a narrow rpm range in which your engine works its
best in terms of torque and horsepower. Shifting gears allows you to stay close to your engine's maximum performance range when possible.

 The problem with this narrow performance range is
that it only works at a single gear ratio, which means your car only performs its best at one specific speed.
Continuously variable transmissions, or CVTs, were designed in order to switch gear ratios so
that your engine has a chance to stay near its
optimal performance range at different speeds. For
a while, continuously variable transmissions
weren't nearly as efficient or cost-effect as regular
four and five-speed transmissions, so they didn't
get much widespread use.

However,
improvements to the technology have allowedCVTs to become more popular. Still, the bottom line in any type of transmission is to avoid the
redline in order to ensure the wellbeing of your engine.

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