Go - kart SOHA submitted by Sharful Haque Gulab 11612320 Go-kart history & importance A go-kart is a type of open-wheel car. Used for = Recreational indoor karts Go Kart History. Karting is form of racing in a small four-wheel vehicle know as a go kart. In the beginning, the first-ever go kart was created in Los Angeles by Art Ingels in 1956. The first official organized race took place with a several dozen of home-built machines in 1957 in the parking lot of the famed Rose Bowl in Pasadena, California. INTRODUCTION DESIGN OF FRAME TUBULER SPACE FRAME A space frame or space structure is a truss-like, lightweight rigid structure constructed from interlocking struct in a geometric pattern ADVANTAGE: -> ISO METRIC STRENGTH(compare with ladder chassis and monocoque chassis of the same weight) DISADVANTAGE: ->Very complex, costly and time consuming. ->Impossible to robotized production. ->Difficulty in accessing to the cabin. SPECIFIACTION OF GO KART ANALYSIS FRONT IMPACT = Load = 14.94 kN Side impact Rear impact MANUFACTURING MATERIAL USED = AISI 1020 PROCESSESS USED = MATERIAL PROPERTIES 1. CUTTING (HACK SAW) 2. FILING (HAND FILE,PORTABLE GRINDING) 3. NOTCHING (HACK SAW , HALF ROUND FILE FILE , PORTABLE GRINDER) 4. WELDING (ARC WELDING – 100-200 AMP) ENGINE AND TRANSMISSION INTRODUCTION AND REQUIREMENT ->Engine is the heart of vehicle and optimum pumping of heart defines the performance of vehicle. ->CVT( CONTINOUS VARIABLE TRANSMISSION) engine was selected because of its robust build quality and it is easy to couple with various type of transmission. ->The most suitable range under 135cc engine 168f-1 of 127cc is selected to achieve a robust and reliable transmission. it is easy to assemble vehicle with this engine and it takes less space and this engine is efficient to work within 40-50 kmph speed. ->Power is transmitted from engine sprocket to rear axle sprocket by means of chain. final drive ration is adapted to the track configuration in order to get most from engine. ->Our requirement is to achieve maximum work output from engine and transmission. Centrifugal clutch -> It uses centrifugal force to connect two concentric shafts, with the driving shaft nested inside the driven shaft. It engages more at higher speeds Uses •keep the internal combustion engine from stalling when the output shaft is slowed or stopped abruptly •disengage loads when starting and idling BRAKING SYSTEM Introduction-hydraulically operated disc brake • A COMMON MISCONCEPTION ABOUT BRAKES IS THAT BRAKES SQUEEZE AGAINST A DRUM OR DISC, AND THE PRESSURE OF THE SQUEEZING ACTION SLOWS THE VEHICLE DOWN. THIS IS IN FACT A PART OF THE REASON FOR SLOWING DOWN A VEHICLE. •ACTUALLY BRAKES USE FRICTION OF BRAKE SHOES AND DRUMS TO CONVERT KINETIC ENERGY DEVELOPED BY THE VEHICLE INTO HEAT ENERGY. •WHEN WE APPLY BRAKES, THE PADS OR SHOES THAT PRESS AGAINST THE BRAKE DRUMS OR ROTOR CONVERT KINETIC ENERGY INTO THERMAL ENERGY VIA FRICTION. Disc Brakes: Disc Brakes are comprised of a disc or rotor, a calliper assembly, disc brake pads and the wheel bearings and hardware necessary to mount the components on the vehicle. The calliper is connected to the master cylinder through tubes, hoses and valves that conduct brake fluid through the system. hydraulic brakes:Pumping brakes are often used where a pump is already part of the machinery. For example, an internalcombustion piston motor can have the fuel supply stopped, and then internal pumping losses of the engine create some braking. Some engines use a valve override called a Jake brake to greatly increase pumping losses. Pumping brakes can dump energy as heat, or can be regenerative brakes that recharge a pressure reservoir called a hydraulic accumulator. principle of working * Hydraulics is the use of a liquid under pressure to transfer force or motion, or to increase an applied force. The pressure on a liquid is called HYRAULIC PRESSURE. And the brakes which are operated by means of hydraulic pressure are called HYDRAULIC BRAKES. These brakes are based on the principle of Pascal’s law. Go-kart Steering introduction Steering important Part of manufacturing of go-kart,with the help of steering We can Change the direction of our vehicle in right or left direction. The steering system is designed to withstand the stress of safely mneuvering the vehicle through any type of possible condition at the time os driving.The purpose of the steering system is to provide directional control of the vehicle with minimum input. The main goal of steering is to have steering radius of 4m or less and to have 100% steering Selection The material of go-kart for steering is important selection.We have to choose those material which can resist more load,good toughness and hardness, more ultimate tesile strength.The material should not break by sudden impact load, also the material cost for go-kart should be minimum,for go-kart we used AISI 1020 material which contains all the properties that we need to manufacture of our go-kart. Application & advantage Superior cornering stability Straight line stability at high speed Parking, junctions, gentle curve Fabrication Fabrication refers to making end products for use or sale from raw materials, either by hand or with the help of machines. Fabrication refers to making raw materials usable for manufacturing. Production is the process of making (manufacturing or fabricating) or growing goods for use or sale. Steering Components: Steering wheel Tie rod with tie rod ends Spindle brackets with kingpin holes RH & LH (right and left hand) spindles • Kill switch (it mounts to the steering hoop) • • • • Go-kart steering fabrication Manufacturing refers to making end products for use or sale from raw materials, either by hand or with the help of machines. Fabrication refers to making raw materials usable for manufacturing. Production is the process of making (manufacturing or fabricating) or growing goods for use or sale. Steering is the collection of components, linkages, etc. Which allows any vehicle to follow the desired course. The primary function of steering is to allow the driver to guide the vehicle. The steering arrangement is to turn the front wheels using a hand operated steering wheel which is positioned in front of the driver, via steering column. Parts of steering fabrication tie rod A tie rod transmits force from the steering center link or the rack gear to the steering knuckle. This will cause the wheel to turn. The outer tie rod end connects with an adjusting sleeve, which allows length of the tie rod to be adjustable. This adjustment is used to set a vehicles alignment angle Steering Wheel hub Steering wheel hub connects the vehicle to the tie rod. It also provides the stable position to the wheel Bush Bush is a mechanical device to absorb Impact or to provide stability between supporting joints. Steering column Steering column is a shaft that connects the steering wheel of the vehicle to the rest of the steering mechanism. Steering wheel Fabrication The whole go kart steering assembly is done by us and with the help of tools. We use two wheel steering system in simple go kart vehicles. Thank you………