As the title says, I know that different shifts mean different gear sizes bein used, but I don’t understand why it makes you unable to start moving the car. I have been able to start a couple of cars on the 2nd shift as an experiment and I understand that I could damage the car and I do it just once for testing purposes but I don’t understand why I cannot do so on other shifts. To clarify, I mean start as in start moving the car and not just turning the car on. Thanks
In: Engineering
It comes down to some math, and power curves.
Gas cars have a narrow range where they can make power (say 800 RPM to 6000 RPM). If you put your in a high gear your engine can turn slowly and the wheels can turn fast (say highway speeds your doing 2500 RPM). No wthink about being stopped, and having it in a high gear where at 2500 rpms the wheels need to turn 65mph…and you are going 0mph. There is no way they can spin that fast and accelerate the weight of the car. Those forces are so high, they will stall the engine. So you choose a lower gear so that the engine can make power at very very low speeds and not stall.
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