SPROCKET-SIDE STAND RETRIEVE SYSTEM

ABSTRACT
                            In modern developing world, automobile plays important role especially stwo-wheeler i.e (motorcycles& bikes) plays a major role. Even though they are helpful there are some sad events like accidents due to careless of rider. Major accidents occur due to forgetting of lifting side stand. To rectify this problem many advance measure have taken, but they are useless. so, by considering that it should be implemented practically in all types bikes .the new system “SPROCKET SIDE-STAND RETRIEVE SYSTEM” is designed based on  the working principle of bikes. Since all bike transmit power from engine to rear wheel by means of chain drive. Since designed setup is kept in between chain drive, setup rotates and side stand get retrieves automatically.
                     




















  CHAPTER NO                     LIST OF TABLES                                                  PAGE NO
                                   
         1                                     1.1   Accidents of status                                                            1
                                           
        3                                     3.1   specification of sprockets                                                  9
                                               3.2   Specification of axle                                                          9
                                               3.3   Specification of lifting lever                                            10
                                               3.4   Specification of pushing lever                                         10  
                                               3.5   Specification of spring                                                     11
                                           
        5                                     5.1   Power source of component                                             14
                                               5.2   Action flow                                                                      15
                                           
        6                                     6.1   working position                                                              19

                                         


















CHAPTER NO                    LIST OF FIGURES                                                  PAGE NO
                                         
              2                             2.1   Sprocket                                                                           5
                                             2.2   Axle                                                                                 5
                                             2.3   Sprocket with Nomenclature                                           6
                                             2.4   Lifting lever                                                                     7
                                             2.5   Pushing lever                                                                   8
                                       
            4                               4.1   Inciter assembly                                                              12
                                             4.2   Retriever assembly                                                          13  
                                           
            6                               6.1   Resting condition                                                            17
                                             6.2   Riding condition                                                             18
                                             6.3   Side view of retriever system                                         20
 

 







                                    1. INTRODUCTION

1.1 INTRODUCTION TO THE AUTO MOBILE
                       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 traveler by reaching the target place very faster. Although it saves the time it does not safe the life of rider if rider is careless, there are some sad facts on them such as accidents.

1.2 SOURCE FOR ACCIDENTS
                     While the two-wheelers is concerned accidents occurs due to riding the vehicle in high speed, ignores to use helmets, does not maintains the speed limit and forgets to lift the side stand while riding the vehicles. These are the major source for accidents. Forgetting to lift the side stand causes huge accidents in rural areas partly in urban areas too, because all the other source of accident has preventive measure, but accident due to side stand do not have proper preventive measure. If you see the accident status 36% of the accidents occur due to this problem.
    Table 1.1
S.NO DURING THE YEAR REASON FOR THE ACCIDENT %OF ACCIDENTS
   1.  2002-2008  Forgetting to lift side-stand        36%
   2.  2002-2008  Does not maintain speed limit        38%
   3.  2002-2008  Does not obey traffic rules        22%
   4.  2002-2008   Other problems        04%








1.3 EXISTING METHODS
                      To prevent accidents occur due this side-stand many ECU and mechanical project had been found.

 1.3.1 MODERN ECU:
                    In order to reduce accidents due to carelessness in lifting the side-stand,  many advance measures have been introduced like ECU, the modern ECU contains a 32 bit and 40 MHz processor. It will be fast as pc’s microprocessor.  The ECU decides timing and functioning of engine and its parts. This play its role in dashboard, this indicates the gear shifting, side stand, to wear helmet in digital display E.g, Hero Honda’s Karizma ZMR. But the people ignore to listen those indicators and safety rules. so for safe guard many mechanical projects have been found to retrieve the side stand automatically.

1.3.2.MECHANICAL PROJECT
                      In existing mechanical project many ideas had been found to lift the side-stand automatically.
i) One small flat rod is kept attached and pivoted between the gear actuator lever and the side stand of the bike. when the gear is actuated the side stand get lifted automatically.
ii) Small stepper motor is connected  between the side stand and the engine ,when engine is started the stepper motor gains the source of power and retrieve side stand  automatically
These are some methods to retrieve side stand automatically when the vehicle moves but it is not implemented  in practical use due to its drawback.

1.4 DRAWBACK OF EXISTING METHODS
              ECU methods are implemented only in costlier bikes but it does not implemented in normal domestic bikes due to their cost.
              When we come across those mechanical projects we could note some drawbacks like wear out of gears, making injuries in legs while actuating gears. Major drawback is it cannot use in all type of two-wheelers. So, in order to solve this we thought and designed “SPROCKET-SIDE STAND RETRIEVE SYSTEM” this system can be attached in all type of two-wheelers (mopeds, geared, non-geared, hand geared bikes).

1.5 PROPOSED METHOD
                  Based on the working principle 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 principle 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. This sprocket system consists of four components, which is assembled as two set up which would be explained briefly in construction and working part of this paper.
                             
















                    2. CONSTRUCTION AND COMPONENTS

2.1 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 does not occurs after retrieving the stand.  Construction of the proposed “sprocket side stand retrieve system” consists of four major components. They are

2.1.1COMPONENTS&ITS DESIGN:
 Axle
 Sprocket pinion
 Lifting lever
 pushing lever

2.1.2 AXLE:
           
                 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. 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.
         
                                     Fig 2.1 axle with key way
            The metal plate is welded perpendicular to the tube. The diameter of tube is slightly greater than the axle diameter about 2 to 4mm. This is for allowing the axle to rotate freely without friction with the tube.
           The other end of the metal plate is welded at the frame. The whole metallic members of   holder are of mild steel. The one end of axle is welded with sprocket and other end with lifting lever and thus the power is transmitted from sprocket to lifting lever.

2.1.3SPROCKET PINION:
       
                   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. 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.
                                 
                                       Fig 2.2 Sprocket with bearing
          Since it is a free wheel it allows the toothed part to rotate free from central portion in a direction. Hence this type of sprocket is used as the rear power transmission device in by cycle that makes the wheel to rotate and also allows toothed area to rotate in anticlockwise when pedaled anticlockwise direction. This action of   sprocket allows attached lifting lever to adjust freely automatically or manually when it does not engages with pushing lever properly.
         
                                         Fig 2.3 Sprocket with nomenclature

                Since the sprocket transmit the power from chain drive,  it  should have the capability  to withstand the heavy loads of engine. So to withstand those impacts on toothed area, It is  made  of  high carbon steel. The ball bearings are made up of high chromium steel. Hence all these material gives following properties for sprocket.

 Heavy duty
 Smooth running
 Tempered
 Long life

           
       Hence the sprocket is considered as heart of this system


   
                         
2.1.4 LIFTING LEVER
         
                      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 is tapered well. The ends are machined well for tapered shape for smooth engaging with pushing lever.
               
         
                                                   Fig 2.4 Lifting lever
                   This smooth engagement leads proper retrieving of side-stand. This tapered surface makes the lifting lever as capable to withstand engine impact. When stand is moved vertical in position, the pushing lever engages with lifting leaves. This may not possible in all time, since the angle of lifting lever may be any degree. So due to effect of free wheel and tapered surface of the lifting lever can adjust itself.

2.1.5 PUSHING LEVER
                     Pushing lever is the component pivoted centrally to the side stand. 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 occur smoothly.
                             
                                          Fig 2.5 Pushing lever  
              The pushing lever is made of  ms-flat rod with the length according to the distance of side stand arrangement. Its top end is made tapered so as to engage with lifting lever. The bottom end of the lever is made as C-clamp, which holds the side stand as shown in fig2.5

             These are four major components using in this system and other small components like Nuts and bolts, hooks etc., are used in this system. specification and dimension of the component is described in chapter 3.
                               













        3    SPECIFICATION OF COMPONENTS

3.1 SPECIFICATION OF SPROCKET
                                                                           Table 3.1
                     MATERIAL      High Carbon Steel
                     PITCH               12.7mm
                     WIDTH                30mm
                     TEETH                16
                      BALLS   High carbon high chromium steel balls

3.2 SPECIFICATION OF AXLE
                                                                            Table 3.2
                  MATERIAL                      Mild Steel
                   SHAPE                  Cylindrical rod
                   LENGTH                       50mm
                   DIAMETER                       13mm
INNER DIAMETER OF SUPPORTING AXLE                       15 mm
OUTER DIAMETER OF SUPPORTING AXLE                       17mm
                    LENGTH                       30mm
                   THICKNESS                         3mm


3.3 SPECIFICATION OF LIFTING LEVER
                                                                  Table 3.3
              LENGTH OF LEVER                     95mm
               THICKNESS                    10mm
              TAPERED ANGLE                    45deg
             CHAMFERED ANGLE                    20deg
              POSITION           Parallel to Sprocket
              WELDED LENGTH                   13mm
               MATERIAL USED                Mild Steel

3.4 SPECIFICATION OF PUSHING LEVER
                                                                  Table 3.4
               MATERIAL                  Mild Steel
               LENGTH OF LEVER                   180mm
               THICKNESS                       3mm
               DIAMETER OF HOLE                       8mm
                LENGTH                      30mm
                THICKNESS                      10mm
               DIAMETER OF CLAMP                      28mm
               DIAMETER OF STAND                      25mm
               PIVOTED ANGLE                      55deg
                BOLT DIAMETER                      8mm




3.5 SPECIFICATION OF SPRING
                                                                        Table 3.5
            NO.OF COIL                         32
            DIAMETER OF COIL                         2mm
            DIAMETER OF WIRE                       15mm
            INNER DIAMETER OF COIL                       12mm
            MEAN COIL DIAMETER                       13.5mm
             TYPE            Closed coil helical spring
            EXTENSION LENGTH                  17mm*2=34mm
            MATERIAL                Stainless Steel


















                          4. ASSEMBLING AND ARRANGEMENT

4. ASSEMBLY OF COMPONENTS
             For the functioning of system the above four components are arranged in two assembly which is described below,
 Inciter assembly
 Retriever assembly
 4.1. INCITER ASSEMBLY:
                      Inciter assembly consists of axle, sprocket and lifting lever. The Sprocket is mounted on the centre of the axle and the lifting lever is welded at the front side of axle as shown in fig 4.1

                       
                                                   Fig 4.1 Inciter assembly        

                   This inciter assembly is main assembly because it receives the power from the chain and incites the retriever assembly to retrieve the side stand because this inciter assembly is kept under the chain as such that the sprocket attached centrally with the axle get engage with chain drive.
4.1.1 ARRANGEMENT OF INCITER ASSEMBLY
                     This set up is arranged in the bike as such that this inciter assembly is hold  by the small hollow shaft with rod welded at the center which is welded to the bottom side of the bike. As the inciter assemblies sprocket get engage with chain drive. When sprocket rotates, the axle along with lifting lever rotates.

4.2. RETRIEVER ASSEMBLY:
                         Retriever assembly consists of pushing lever and side stand. The pushing lever is centrally pivoted with the side stand as the pushing levers tapered end is at the top side and clamp is at the bottom as shown in fig 4.2
                                 
                             
                                              Fig 4.2 retriever assembly
                      Side stand of the bike is drilled at the centre as to pivot the pushing lever as shown in figure 4.2.Pushing lever is also drilled at the center as such the both components kept together and bolted as such that C shaped clamp is at the bottom and flat rod is kept at the top side.

4.2.1 ARRANGEMENT OF RETRIEVER ASSEMBLY
                     This retriever assembly is arranged as such the arrangement of side stand in the bike. The pushing lever is arranged as such the flat rod is kept at the top as to mesh of lifting lever. C clamp end is kept at the bottom as to push the side stand by receiving the power from inciter assembly.





                                5.  POWER SOURCE

                      This chapter deals with the power source of the working component and how the each component and assembly of component works is explained below with flow chart.

                                 



















                                  Flow chart 5.1 Power source of component

5.1 POWER SOURCE OF INCITER ASSEMBLY
                       Inciter assembly gets the power from the linear chain motion i.e. ( as engine transmit  power to the rear wheel through chain drive  since the setup is kept at the bottom and sprocket get engage with  chain so ,when chain rotates in anti-clockwise direction the sprocket engaged rotates in clockwise direction)  as sprocket rotates the axle rotates  as the result lifting lever rotates in clockwise direction.
5.2 POWER SOURCE OF RETRIEVER ASSEMBLY
                      As the retriever assembly’s pushing lever get engage with lifting lever. It gets power from the rotation lifting lever and transmits to the clamp and retrieve the side stand automatically.















                                          Flow chart 5.2 Action flow














                                           6. WORKING

6.1 WORKING PRINCIPLE
                         Sprocket side stand retrieve system retrieves the side stand automatically if the rider forgets to lift the side stand while moving the bike. It works based on the working principle of the two-wheelers .every bikes transmit power 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 Sprocket side stand retrieve system is designed.
                           
                         If Sprocket is kept between the chain drive, it make the sprocket to rotate so, using the sprocket as the major component this system works. 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 anti-clockwise direction the inciter assemblies sprocket absorbs the power and rotates in clockwise direction

                         The working of “Sprocket-Side Stand Retrieve System is explained below in both (resting & riding condition of two-wheeler)












6.1.1 RESTING CONDITION:
                     When two-wheeler is in resting condition i.e.when rider actuates the  side stand of the vehicle to ground, the pushing lever that is pivoted at the centre of the side stand gets engage with the inciter assemblies lifting lever. During this condition the inciter assembly is at rest and retriever assembly (pushing lever’s tapered end get engage with tapered end of lifting Lever).

                                   
                     
                                                Fig 6.1 Resting condition


                         Pushing lever’s length can be changed according to type of bikes and distance calculated between the side stand and chain drive. Closed coil helical spring which gets pulled ,the coil of spring get tensed during stand resting in ground .This is the condition of system during resting stage.




6.1.2 RIDING CONDITION:
                         When two-wheeler is started, Engine’s pinion transmits power to the rear wheel by the chain drive. The inciter assembly which is kept at the center of the chain drive gets rotates as the sprocket gets engage with chain drive. so, when the sprocket rotates the lifting lever mounted with axle rotates. hence the lifting lever lifts engaged the pushing lever and therefore the pushing lever pushes the side stand by clamping it with the C shaped clamp stand holder and hence the spring tensed in the side stand get compressed quickly as a result side stand get retrieves

             
                                                Fig 6.2 Riding condition
         








                    The working of “Sprocket-Side Stand Retrieve System is explained below in the flowchart 6.1


























                                    Flow chart 6.1 Working positions





  6.2 SIDE VIEW

                 
                      Fig 6.3 Side View of Sprocket side stand retrieve system




                                             7. 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. These 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

       







 
                 













                                                  COST ANALYSIS

i )  COST OF THE MODEL
                        MATERIAL                             COST
SPROCKET 2 NOS            35*2=      70RS
LARGER SPROCKET 1NOS                             80RS
WHEEL CHAIN                             50RS
SIDE STAND WITH BOLT&SPRING                             98RS
MS RODS (FRAME,LIFTING&PUSHING LEVER)                           300RS
PEDAL                             80RS
                TOTAL                           678RS

ii)COST OF FINISHED MODEL
                        WORK                          COST
           MATERIAL COST                          678RS
           LABOUR CHARGE                          300RS
           PAINTING                            90 RS
                                     TOTAL COST 1068

iii)COST OF THE SYSTEM
                 MATERIALS                         COST
 SPROCKET 1NOS                         35RS
MS ROD(AXLE,LIFTING&PUSHING LEVER)                        175RS
MACHINING COST                        100RS
                                         TOTAL COST                        310 RS



     TOTAL COST OF MODEL  SYSTEM           =                  1068RS

     TOTAL COST OF SETUP                                =                    310RS


                                            9. FABRICATED MODELS
               
                                                 APPENDIX-1

                                                             

               



                                Fig  9.1 : FRONT VEIW OF   INCITER ASSEMBLY




                                                             APPENDIX-2




 



                                Fig 9.2 : SIDE VEIW OF INCITER ASSEMBLY







                                                        APPENDIX - 3

         

                                                  Fig 9.3 : LIFTING LEVER


                                                            APPENDIX - 4


   


                                                               
                                          Fig 9.4 : AT RESTING CONDITION

                                                             APPENDIX-5




                                                 
                                                 
                                             Fig 9.5 : RETRIVEL CONDITION


                                                            APPENDIX-6



                                                           
                                               
                                                     Fig 9.6 : RETRIVED CONDITION




                                                           APPENDIX -7




                               
                                           Fig 9.7 : SIDE VEIW OF MODEL



                                                             APPENDIX -8



                                             
                                             Fig 9.8 : TOP VEIW OF MODEL