Hub gear

Pursuing dreams can often take hard work. William Kamkwamba never gave up on his dreams of building a windmill to provide electricity for his village. He took initiative and, in the end, built the first windmill ever in Malawi. One of William’s most honorable qualities is that he is extremely inventive. He was born in Malawi, a country among the poorest in the world. After dropping out of school, William spent his time at the library reading books about windmills. This gave him inspiration

As shown in figure, there are frictional losses due to the meshing of gears and misalignment of the shaft when load is exerted on the track. The proposed mechanical motion rectifier harvester system consists of two major parts. The first part is input assembly, which acts to convert bi-directional linear motion into single

trailor is developed and tested for its movement in all 180 degree possible angle to unload the materials in the tipper trolley and monitor the inclinations for its gradualism (linearity). Key words: Design Optimization of Worm Gear drive, Hydraulic Cylinder, Worm & Worm Gear Introduction Material handling in construction and civil works is one of the basic necessities. The material supply to civil and construction is provided through

These gears provide a balance between torque and horsepower, and this allows them to be a go-to gear when the rider is not sure about the distance faced. Middle gears are also there to get rid of cross chaining, which will be explained later. All of this shows that middle gears do, in fact, have a purpose, and aren’t just there for show. Due to human errors when guessing the optimal time to switch gears, there is a new possible innovation in the world of gearing systems. Using an electronic mechanism

Material handling in construction and civil works is one of the basic necessities. The material supply to civil and construction is provided through trucks, dumper etc. The material should be properly loaded, managed, stacked, transported and unloaded. The dumper carries the material which is loaded from the site, where the material is initially stored. It is then loaded to the dumper and transported to the required site and then unloaded. The major issues raises over here, the incompatibility of

Gears are part of one of the six simple machines, the wheel and axle. Simple machines, such as the wheel and axle, are mechanisms created to make difficult work much easier. The six simple machines consist of the inclined plane, screw, lever, pulley, wedge, and wheel and axle. Gears can be found in many household items today. For example, watches, bicycles, and pencil sharpeners. The most common object, in which gears are found, is the car. The car’s steering wheel is a simple machine, called the

to many RC cars and other mini robot vehicles, using DC motors with a great package of speed reducer gearbox would be the best method to run the vehicle. In this section, I express a brief description of the DC motors and the chosen speed reducer gears, then next chapter would include more details regarding the relation between the motors and the power moves the vehicle with all the accessories. Also, it should be strong enough to supply the enough digging force when supporting the arm. Mabuchi

and implementation of steering mechanism is presented. The proposed approach is to construct a vehicle with 90 degrees turning wheels through "changing pinion over the rack" steering mechanism. The steering mechanism uses rack and pinion in defined gear ratios. The most conventional and general steering arrangement is to turn the front wheels using a hand operated steering wheel which is positioned in front of the Driver. The steering column, which contain an universal joint which is part of the collapsible

During the 4-month semester for Level 3 Drivetrains we reviewed in detail the operations for Torque converters, Planetary gears, Inputs and Outputs for Allison World Transmissions, and Power flow for Allison 1000/2000 series transmissions. In this essay, I will be revising and explaining how these systems work and what operations they serve. Torque converters act as the main torque multiplier in any automatic transmission, starting from the engine, going through the torque converter, then into

This type of transmission offered multiple gear ratios and, in most cases, reverse. The gears were typically engaged by sliding them on their shafts which required careful timing and throttle manipulation when shifting, so the gears would be spinning at roughly the same speed when engaged; otherwise, the teeth would refuse to mesh. These transmissions are called sliding mesh transmissions or sometimes crash boxes, because of the difficulty in changing gears and the loud grinding sound that often accompanied