Here I'll explain things related to car mechanics so I can remind myself later. For example, do you know what gear ratios are?
The gear ratio represents the relationship between the rotational speed of the engine and the rotational speed of the wheels.
It's usually expressed as a ratio like 3.5:1 (this is a high gear ratio) meaning the engine rotates 3.5 times for every 1 rotation of the wheels.
1st gear 3.4 2nd gear 2.3 3rd gear 1.6 4th gear 1.1 5th gear 0.8 final 4.1