Why do trucks have so many transmission gears?
In: 354
If I was trying to explain this to _my_ five year old..
Engines can only spin up to a highest point. The engines in trucks are very strong but don’t spin very fast so they need a bunch of little gears to break up the workload.
In a more technical approach, the optimal point of torque and horsepower is lower than that of gasoline engines so revving higher in diesel trucks is inefficient. Torque drops off drastically and that torque is what gets the load moving.
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