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- 1. 1. INTRODUCTION In modern world the living status were developed and developing more equipped. The automobile takes a great part in the development, since it plays one of a major key in daily life. While automobile is concern two-wheeler i.e. (motorcycles and bike) it plays very important role because it saves the time of traveller by reaching the target place very faster. Motorcycles are generally provided with stand for supporting the motorcycles when they are not in use. A motorcycle side stand is a nearly universal method of allowing a motorcycle rider to park his vehicle unattended easily. If this stand is in the park position while the motorcycle is ridden through left turn a serious safety hazard exists. A new type side stand which is automatically retracting side stand is invented to prevent such type of accidents. 1.1 PROPOSED METHOD Based on the working principal of two-wheeler (i.e., the power is generated in the engine and it transmits power to the pinion and makes it to rotate. The pinion transmits power to the rear wheel pinion and makes the vehicle to move). This is the basic principal followed in all type of two-wheelers, based on this “sprocket side stand retrieve system” is designed because this system works by getting power from chain drive.
- 2. 2. CONSTRUCTION The whole construction of this system is simple and efficient. The arrangement and position of components makes the system to function. Each and every component has its own property and responsibility. The power obtained from the chain drive is transmitted. To the appropriate component without power loss. The systematic design of system is made in order to consume only very low amount of power initially for few seconds to retrieve the stand. Then the power consumption dose not occurs after retrieving the stand. 2.1 COMPONENTS 1. Axle 2. Sprocket 3. Lifting Lever 4. Pushing Lever 5. Frame (body) 6. Chain 7. Stand 8. Expansion Spring 9. Freewheel 10. Chain Adjuster 11. Screw 12. Washers 13. Nut and Bolts 14. Rear and Front Hub 15. Pedal
- 3. 2.1.1 AXLE:- A rod that serves to attach a wheel and provides support for bearings on which the wheel rotates. Axle is the metallic rod made up of mild steel. It connects the lifting lever and sprocket centrally. The axle is welded centrally to the sprocket. Figure: 1- Axle The axle is hold by a holder. The holder is welded with the frame. The holder is used to prevent vibration and to provide support to the axle. The holder has small metallic tube and a rectangular metal plate. Figure 1 shows axle. 2.1.2 SPROCKET:- A sprocket or sprocket-wheel is a profiled wheel with teeth, cogs, or even sprockets that mesh with a chain, track or other perforated or indented material. It is a part of the drive train that propels the bike forward. Sprocket is the major component of this system because it is power transmitting device. It gets power from the chain drive and makes this system to work.. Figure: 2- Sprocket It is the device which transmits the linear motion of meshing chain drive into rotary motion by means of the tooth found on it. The sprocket with ball bearings is said to be free wheel
- 4. 2.1.3. LIFTING LEVER:- It is used to apply leverage to increase the resistance that can be moved with a given effort. E.g. to increase the velocity at which an object will move with a given force. Lifting lever is the third major component of the system .the lifting lever is the rectangular rod made of ms-rod, which consists of two lifting leaves which is mounted with the edge of axle. The lifting leaves should be parallel to the sprocket pinion. The lifting lever is composed of two metal rods, where both are welded at either sides of the axle. The free ends of the lifting leaves are tapered well. The ends are machined well for tapered shape for smooth engaging with pushing lever. Figure-3 shows Lifting lever. 2.1.4. PUSHING LEVER:- A simple machine consisting of a rigid bar pivoted on a fixed point and used to transmit force, as in raising or moving a weight at one end by pushing down on the other. A projecting handle used to adjust or operate a mechanism. Pushing lever is the component pivoted centrally to the side stand. Figure: 4- Pushing Lever Figure: 3- Lifting Lever
- 5. The pushing lever is metallic rectangular plate, whose bottom end is bended in shape of C and top end is welded with a small piece of rectangular rod. This small piece of rod is used for getting lifted by the lifting lever. Since this rod engages (or) lays over tapered edge of lifting lever, thus the retrieving smoothly.Figure-4 shows Pushing lever. 3. WORKING In Automatic side stand retrieve system, the side stand automatically gets retrieved if the rider forgets to lift the side principle of the two-wheelers. In motor bike power is transmitted from engine’s pinion to the rear wheel i.e. (rotary motion of the pinion makes the linear motion of the chain. That linear motion of the chain is absorbed by rear wheel’s sprocket and converted into rotary motion). That rotary motion of the rear wheel makes the bikes to move. Based on this side stand retrieve system is designed. If Sprocket is kept between the chain drive, it make the sprocket to rotate. The working of this system is based on the sprocket. It gains the power from the chain and make specially designed component (lifting lever) to rotate. This rotation incites engaged pushing lever to push the side stand to retrieve. When chain rotates in anti-clockwise direction the inciter assembly’s sprocket absorbs the power and rotates in clockwise direction Figure 5-Initial Position Figure 6- Final Position
- 6. 4. ADVANTAGES Easy in installation Simple in mechanism No extra power source required Smooth running Low in cast 5. DISADVANTAGES More power required Friction is more 6. APPLICATIONS Used in all type of two wheelers, geared, non-geared, hand gears.
- 7. 8. CONCLUSION “Sprocket- side stand retrieve system” will definitely good retrieve system. Since the setup is compact it does not affect the performance of the vehicle. Because of the power is obtained from chain drive. Definitely this system could be used in all type of two-wheelers (TVs-XL, all front, back, hand geared) for retrieving the side stand, it will be the major system to control accidents due side stand problem and protect the careless rider. This system can be implemented in all types of bikes by changing small variation in size and cost of this system also very low and so it will not affect the economic level also. While compare to other system this SPROCKET SIDE STAND RETRIEVE SYSTEM will be the life saver. 9. REFERENCE Modelling and analysis of two wheeler connecting rod. International journal of Modern Engineering Research (IJMER) Vol.2, Issue.5, Sep-Oct. 2012 pp- 3371 cting rod, Dr. K.Tirupathi Reddy2. Syed Ataf Hussain. Shigley, J.E. and C.R. Mischke, 2001. “Mechanical Engineering Design”, McGraw-Hill, New York, 776. Webster, W.D., R.Coffell and D. Alfaro, 1983. www.wikipedia.com/freesearch/automobiles www.howstuffworks.com/auto TEACHER’S SIGNATURE
- 8. 7. ESTIMATION COST - SR NO. NAME OF COMPONENT QUANTITY COST IN RS. 1. SPROCKET 1 100 2. SIDE STAND 1 50 3. CHAIN 1 55 4. AXLE 1 20 5. PEDAL 1 20 6. FREEWHEEL 2 50 7. REAR HUB 1 20 8. CHAIN AADJUSTER 1 20 9. WASHER 1 30 10. EXPANSION SPRING 1 20 11. FRONT HUB 1 30 12. NUT 2 20 13. RAW MATERIAL ---- 200 14. INTERNET CHARGE ---- 70 15. TRANSPORTATION ---- 50 16. FABRICATION CHARGE ---- 400 17. OTHER CHARGES ---- 100 TOTAL 1205/-
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