Can a Part-Time 4WD (4H) Vehicle Make Turns?
2 Answers
Yes, it can make turns, but there are specific requirements for the road conditions. Turns cannot be made on paved roads; they can only be performed on unpaved surfaces or in poor road conditions. The part-time 4WD system lacks a differential between the front and rear axles, making turns on paved roads dangerous. Introduction to Part-Time 4WD: This is a type of drivetrain for motor vehicles that can switch between two-wheel drive (2WD) and four-wheel drive (4WD) based on driving conditions. It is commonly used in SUV models to enhance off-road capability and improve driving stability. Structure of Part-Time 4WD System: Power from the engine is transmitted through the gearbox to the transfer case, then to the front and rear drive shafts, followed by the main reducer and differential, and finally to the drive axles and wheels in a sequential manner. The cost of a part-time 4WD system is generally lower compared to a full-time 4WD system.
Speaking of part-time 4WD, I've got plenty of experience. Last time I drove my friend's old off-roader on mountain roads using 4H mode - handled turns perfectly, especially on muddy surfaces where it felt rock solid. Key thing to remember: never use 4H for turns on regular paved roads, otherwise the steering becomes extremely heavy and you'll hear tires skipping with loud cracking sounds. Once took a 40mph turn on gravel without any body slip, but forgot to switch back to 2H when returning to city in rain - could clearly feel the front wheels fighting during intersection turns. Pro tip: always shift to 2WD before turning on paved roads - the steering becomes light as a passenger car's, that's the proper way to drive.
