Wherever anyone wants a chance to trade speed for power, or the other way around.
The most common types of bevel gears used in rear axles are straight bevel gears, spiral bevel gears, and hypoid gears. Among these, hypoid gears are the most widely used due to their ability to provide smoother operation, higher load capacity, and better efficiency compared to the others. Spiral bevel gears also offer advantages in terms of load distribution and reduced noise but are less common than hypoid gears in automotive applications. Straight bevel gears are typically used in simpler, lower-speed applications.
Well in most cars there are 5 gears and the reverse. Don't forget the timing gears, steering gears and differential gears.
Car
gears are used to transmit power and motion
The three types of bevel gears commonly used in rear axles are straight bevel gears, spiral bevel gears, and hypoid bevel gears. Among these, spiral bevel gears are the most commonly used due to their smooth operation, higher load capacity, and ability to transmit power at right angles with less noise and wear compared to straight bevel gears. Hypoid bevel gears are also popular for similar reasons but are typically found in applications requiring a lower center of gravity.
Planetary gears can be spur or helical gears.
mostly helical gears !1.
Lexus IS F (8 gears)
A gear is a simple machine, usually circular, with evenly cut teeth surrounding its perimeter. Spur gears are the most basic type and can be used in a wide variety of simple and complex machinery.
There are three main types of gear combinations used in mechanical systems: spur gears, helical gears, and bevel gears. Spur gears have straight teeth and are used for simple applications. Helical gears have angled teeth for smoother operation and higher loads. Bevel gears have cone-shaped teeth and are used to change the direction of rotation.
Gears are used to make pieces of items or objects rotate. They are used in a majority of machines available.
Bevel gears can be used to change the direction of drive in a gear system by 90 degrees