What type of motor is used in four-wheel drive vehicles?
4 Answers
Four-wheel drive vehicles use a 540-type motor. Structure of four-wheel drive vehicle motor: There is no fixed positive or negative polarity. If the left is positive and the right is negative, it rotates in one direction; if the left is negative and the right is positive, it rotates in the opposite direction. Maintenance methods for four-wheel drive vehicle motors: It is best to switch between motors for use. Prepare at least two motors suitable for each type of track to reduce wear on the motor gears; for daily maintenance of gears, the main focus is to regularly apply lubricating oil. During gear operation, gears will wear, and the role of lubricating oil is to minimize such wear as much as possible.
I've been a fan of four-wheel-drive cars since childhood. The motors are usually DC motors, especially brushed DC motors, which have a brush and coil inside. The current generates a magnetic field to push the rotor to rotate, driving the wheels. This type of motor is low-cost and easy to maintain, but the brushes are prone to wear and produce sparks, requiring regular replacement. When racing, I upgrade to brushless DC motors, which are more efficient, have higher speeds, and longer lifespans. Paired with lithium batteries, they can significantly boost the car's speed. When purchasing, consider the motor size and KV value—too high can easily cause overheating. Matching the gear ratio to optimize performance is key. For long-term use, pay attention to heat dissipation to avoid coil burnout, which can affect the fun of driving.
As an amateur enthusiast, I always use standard DC motors when assembling my RC cars. These are cylindrical brushed motors that start humming as soon as they're powered on. Costing just a few bucks, they're easily replaceable at toy stores. However, prolonged use causes brush wear, slowing or stopping the car, so I disassemble them to clean contact point dust. Last year I switched to brushless versions - noticeably more stable speed with reduced noise, giving me an edge in races. Just remember not to exceed voltage limits: 7.2V works perfectly, while higher voltages risk overload. Simple maintenance like lubricating the shaft and keeping them dry/cool significantly extends lifespan.
In the racing world, choosing the right motor is key to winning! RC cars often use DC motors, and I prefer brushless ones for their speed and precise response. The efficient magnet design allows them to sprint instantly when powered, making them perfect for racing tracks. High KV values mean faster acceleration, but require a lightweight chassis for balance. I've modified three cars, and after upgrading to brushless motors, my performance improved significantly. The heat-resistant coils eliminate worries about burnout.
