To design and development of All Time 4 Wheel Drive Off-Road Vehicle
Off-road vehicle is one that can withstand the harshest elements of rough terrain. An off-road vehicle is considered to be any type of vehicle which is capable of driving on and off paved or gravel surface. It is generally characterized by having large tires with deep, open treads, a flexible suspension.
4×4 ("four by four") is a four-wheeled vehicle with a drivetrain that allows all four wheels to receive torque from the engine simultaneously. While many people associate the term with off-road vehicles and Sport utility vehicles, powering all four wheels provides better control than normal road cars on many surfaces, and is an important part in the sport of rallying.
Off-road vehicles have an enthusiastic following because of their many uses and versatility. Several types of motorsports involve racing off-road vehicles. The three largest "4 wheel vehicle" off-road types of competitions are Rally, Desert Racing, and Rockcrawling.The three largest types of All Terrain Vehicle (ATV) / Motorcycle competitions are Motocross, Enduro, and also Desert Racing like Dakar Rallye andBaja 1000.The most common use of these vehicles is for sight seeing in areas distant from pavement. The use of higher clearance and higher traction vehicles enables
access on trails and forest roads that have rough and low traction surfaces.
To be able to drive off the pavement, off-road vehicles need several characteristics: They need to have a low ground pressure, so as not to sink into soft ground, they need ground clearance to not get hung up on obstacles, and they need to keep their wheels or tracks on the ground so as not to lose traction.
Wheeled vehicles accomplish this by having a suitable balance of large or additional tires combined with tall and flexible suspension.
Picture: Simple idea of an Off-road vehicle.
Scope of Project
In this project , we built an off-road vehicle producing considerable high power output. In a year, Many off-roads cars are build by college students and they have to invest considerably high amount of money mainly because of the expensive high-power engine and an efficient transmission. In our attempt to design and build this project we are mainly considering the cost factor. Some possible ways we can reduce cost
· By Modification in using 'second-hand' engine and transmission, as they are most expensive in this project.
· By not using the extra 4X4 gear-box, as we will adopt the gear-box of Maruti-800 car which have the differential in itself and we can convert it into 4X4 gear by locking the planet gears.
· Simple, compact design and low-weight pipe frame.