Mecum

12 Ocak 2016 Salı

MAIN LAYOUT WITH REAR-WHEEL DRIVE: FRONT ENGINE... For Mecum Russian and many American rear wheel drive cars characteristic is the rigid beam rear axle. On European and Japanese models since the late seventies of years, usually used either lightweight dependent rear suspension type "De Dion", or independent with swinging half axles on older designs longitudinal (or diagonal) wishbone multi-link and the various options that forces on the semi-axis with hinges, — currently usually are used the hinges of equal angular speeds, similar used on front wheel drive cars. MID-ENGINED...

For the driver of average skill and non-extreme conditions, front - and rear-wheel drive cars one of the technological level roughly equivalent from the point of view manageability and security; the benefit of front drive is manifested usually only on slippery surfaces — in particular in winter. And front-and rear-wheel drive are inferior in this respect the automobile all-wheel drive. In some disciplines of Motorsport (for example, in highway-ring races) rear-wheel drive has the advantage ahead of the front resulting from the benefits of rear-wheel drive and full front front on the coatings with a high coefficient of friction (dry asphalt).

At the same time Rally inherent in this kind of Motorsport slippery ground, ice and snow-covered slopes with low grip AND REAR-ENGINED. advantage already full and front drive. On the rear actuator when skidding enough to throttle back, to return the car on the trajectory. Rear-wheel drive is used almost everywhere on motorcycles. The advantages of rear-wheel drive. 1. Dynamic loading rear (leading) axis: when you press the gas, the weight of the machine is transferred to the rear part, thus, loading the back wheels and unloading the front, in the end, the whole machine has the best grip, the drive wheels less slip. As a result — good performance (except for snow-covered roads, where better shows front-wheel drive) and the dynamics of dispersal (or rather, more efficient use of engine power during acceleration), good the ability to confidently climb. 2. Skid the rear wheel drive car more predictable and you can fix the problem by throwing gas and turn the steering wheel in the direction of the skid. The driver of average skill tend in such situations to instinctively throw gas and not to press. In front of the actuator, opposite to the skid you have to add the force on the gas pedal, and flushing will lead to even greater loss of control. 3. On the wheel is not transmitted reactive moments during acceleration. 4. Smaller turning radius, as the turning angles of the front wheels is not limited to the joints of equal angular speeds. 5. Technologically, rear-wheel drive it is often easier compared to the front; in particular, does not require the use of relatively complicated and expensive hinges of equal angular speeds, even in the case of independent rear suspension; however, the cost of very much depends on the specific layout, which is considered below, and a concrete implementation. Cons rear-wheel drive. 1. The rear wheel drive car rotated the front wheels generate a braking effect, and pushing the rear — excess the pushing force, so RWD cars tend to oversteer (slide the rear axle in a turn), that is called excessive Mecum maneuverability.