This is a car based on roller skater designs that rely on friction, centripetal force, and gravity for its operation.... It works simply, without batteries, motor, pedals and gears. It can bear Upto 150 kg can ride smart car in smooth surface.

1. New generation car
shazmr369@gmail.com

2. Introducing the all new revolutionary
eco-friendly
New generation Car

3. Introduction
 Works on friction and gravity for its operation.
 Sit on it, put your feet up, and make it go, just by wiggling the steering
wheel
 It can carry up to 220 pounds (100 kg ) can ride twist car in smooth
surface.

4. The Physics behind it
o The front wheels of the machine are connected to the handlebars by a
lever, such that its offsetted by a distance.
o This means that a torque applied to the handlebars will cause a lateral
friction force by the wheels on the ground.

5. oWheel behind the axis of rotation of the steering column gives
you a Castering effect and hence it changes the centre of gravity
from one point to other.
oIts based on Newton's 3rd Law.

6. How it works :

11. Why this material is preferred
 Nylon material is used for wheel as it is highly durable and lasting.
 Bearings are used in wheels as heavy load is subjected to the system.
 Bearings help in the smoothened working of the system and give
higher efficiency.
 It is due to force applied that the movement is possible.

12. Components of the system
Material Mild steel
Steering diameter 25 cm
Wheel diameter 8.9 cm
Steering Axle (Stainless steel) 35cm
Bearings 2.2 cm x 4
2.6 cm x 2
Rings 2.6 cm x 5
Inner diameter 2.2 cm
Nut 0.25 cm x2
Bush/ Washers 1.5 cm x2
Weight 10

13. Expenses
 Nylon 750
 Labour + miscellaneous 2750
 Bearings+ Welding rods 250
 Upholstery 300
 Mild steel 500
 Total cost 4800

14. Test results - Von Mises stress

16. No. of nodes = 136235
No. of elements = 73388

17. Test results – Von Mises stress (Scale 1:71)

18. Test results – Factor of safety

19. Test results – Force distribution

25. Speed of the system depends upon the following factors
 Weight of the person.
 Surface in which the system is ridden.
 Twisting force applied on the steering.

26. Limitations
 Speed is limited.
 Heavy in weight.
 Can only run in a smooth and plane surface.

27. Advantages
o Rugged and durable
o Deceptively simple to operate
o No pedals
o No batteries required
o No gears

28. References
 MECHANICS FOR ENGINEERS STATIC- FERDINAND
.P.BEAR,E.RUSSELL JOHNSON
 MACHINE DESIGN-O.P.KANNAIAH
 PRODUCTION TECHNOLOGY-R.K.JAIN
 www.ozebiz.com.au/racetech/theory/align.html
Softwares used
 Solid Works 2008
 Cosmos ( Solid Works)
 AutoCAD 2010

29. Lets keep our Earth Green

30. THANK YOU