KUMARAGURU COLLEGE OF TECHNOLOGY

COIMBATORE-641006

AUTOMATIC STAND RELEASE (USING SPRING MECHANISM IN VEHICLES)

Presented By,

R.DINESH M.VIGNESH N.BALAKRISHNAN III YEAR B.E. MECHANICAL DEPARTMENT.

E-MAIL ID:dinesh777mech@gmail.com

PHONE NO: 9486074404

ABSTRACT

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Side stand in two wheelers support the entire weight of the vehicle when it is

parked. They are perfect on quick stops when one needs to leave the vehicle

for a short while. They are provided with a spring that pulls it back into position to

ensure extra safety.

Some times the person who drives the two wheeler may forgot to release the

side stand. This will tend to un wanted danger and lack of concentration

while driving.

Nowadays sensors are used for ensure that the stand is in released condition

or not by indicating it using small lights in stash board. There is also a possibility

to forgot to see the light.

This project concentrates on to completely reduce the possibility of driving

two wheelers without releasing the side stand . This may suitable for all kind of

two wheelers which are driven in gear system with low cost.

INTRODUCTION

Today, Motor cycles are used everywhere in all over the world. Designer

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should design each and every component in the two wheelers with very at most

safe and the product should be economical. In motor cycles, the side stand plays

major roll while the vehicle is in rest condition. While the driver starting the motor

cycle, there may be a possibility of forget to release the side stand. This will tend

to unwanted troubles. To avoid this the driver has to ensure that the side stand is

released.

This problem may be rectify by releasing the side stand when the gear

shifting. Because while gear shifting time, the leg is in safe and comfortable place.

This can be achieved using the spring force.

SIDE STAND

Side stand in two wheelers support the entire weight of the vehicle when it is

parked. They are perfect on quick stops when one needs to leave the vehicle for a

short while. They are provided with a spring that pulls it back into position to

ensure extra safety.

Besides side stands, most two wheelers

are also provided with a central stand.

SIDE STAND

MATERIALS REQUIRED

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• SIDE STAND

• L-SHAPE ROD

• EXTENSION SPRING

• GEAR SHIFTING ROD

• SMALL COMPRESSION SPRING

• BRAKE CABLE

• RIVET

• TRIGGER

POINTS WHICH ARE CONSIDERED BEFORE DESIGNING

While releasing the side stand automatically, there may be a possibility for

that the stand to hit the leg.

When the time gear shifting the leg will be in safe zone. So the automatic

release is done using the gear shift.

The extension spring which is used to release the side stand should be

properly selected in order to make it with the capability of withstand the load.

The cost of making the model was calculated. Because the vehicle cost

should not be increased due to this setup which will be kept in the side stand.

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Weight of the materials which are used must me limited. So the weight of

the vehicle also be maintained.

The type of gear shifting whether forward or backward also taken as account for control the trigger movement.

The space in the vehicle(near the side stand) to fix the design is focused.

CONSTRUCTION

The two wheeler side stand is connected with the L-shape rod by welding as

shown in fig 2.1. The top of the L-shape rod is connected with one end of the

spring and the other end of the spring is connected at the left side of the stand.

Normally the spring is under tension during standing condition of the bike.

But if we release the side stand , the spring will come to its normal condition.

In order to control the spring action (elongation to compression) an external

trigger is provided at the top of the L-shape rod. The trigger motion is restricted

with in certain angle as shown in fig 2.1. Trigger set up is connected with the gear

shifting rod by means of a cable. For this purpose a brake cable is used.

In the trigger to allow the vertical up and down motion, there is a key way is

provided. A rivet is fixed into the keyway in order to give rotary movement to the

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trigger. The has to restrict the motion of the L-shape rod while the standing

condition of the vehicle. So there is piece of rod which is act as a stopper for the

trigger. This will not allow the trigger to rotate completely.

For every gear shifting, the trigger has to come back to its original position.

This may be achieved by providing a small compressive spring at the top of the

trigger.

WORKING

While the motor cycle is in standing condition, the spring connected with the

L-shape rod is elongated in position. So tension is developed in the spring. Due to

the tension spring will try to pull the L-shape rod in downward direction as shown

in fig(a).

In standing condition the L-shape rod should be in vertical position. For this

purpose an external trigger is used to control the movement of the L-shape rod.

The trigger is controlled by means of gear shifting rod using a cable.

While the gear rod is shifted from neutral to first gear, the cable connected is

pulled along with the gear rod. So the trigger which is connected with the another

end of the cable is also pulled upward direction. So the restriction offered by the

trigger to the L-shape rod is removed. Now the spring can easily pull the L-shape

rod. The L-shape rod travels around 100 degrees. Due to this the side stand

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connected with the L-shape also rotates around 100 degrees. This will release the

side stand. Also the extension spring comes back to its original compressed state.

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WORKING OF TRIGGER SETUP

CONCLUSION

From the above details of the project the following conclusions are found.

1. By making the side stand which can be released while shifting gear

2. rod, the possibility of driving without bothering about the side stand

3. will achieve.

4. This may reduce the un wanted distraction and disturbance while

driving. It is very economical .

5. It provides safe driving at all situations.

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6. The forces like compression and expansion which is offered by the

extension spring are directly subjected to the trigger. So the trigger

material should with stand the high pressures. This project setup

consists of simple mechanical links.

7. Instead of using sensors, it will reduce the cost. Also the stand can be

automatically released.

REFERENCES

E.sundaramoorthy, (2006) “ Design of Machine Elements”, Balachitra publishers, Madurai

R.S.Khurmi, J.k.Gupta, “A Text book of Machine Design”,

Eurasia publishing house(pvt.)ltd.,New Delhi

Dr.R.K.Bansal, “A Text book of Strength of Materials”,

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Laxmi publications (P)LTD.

“Design Data”, data book for engineers, compiled by PSG College of Technology, Published by Kalaikathir Achchagam, Coimbatore.

Bible , Ellen Finkelstein, “Autocad 2007 and Autocad LT 2007”

David Frey, “Autocad 2007 and Autocad LT 2007”

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