Suspentions p df

the brief explanation on suspensions

1. Vuppala Jagadesh
17331A03H5
Gmail:Jagadeshbadri137 @gmail.com

2. DEFNITION :
A motorcycle's SUSPENTION serves a dual purpose: contributing to the vehicle's handling and
braking, and providing safety and comfort by keeping the vehicle's passengers comfortably
isolated from road noise, bumps and vibrations.

4. FRONT SUSPENSION :
The most common form of front suspension for a modern motorcycle is the telescopic fork. Other fork
designs are girder forks, suspended on sprung parallel links and bottom leading link designs
There are 2 types of front suspentions
1. Telescopic fork
2. Upside down fork

5. Telescopic forks
HISTORY :
scott produced a motorcycle with telescopic forks in 1908, and would continue to use them until 1931 In 1935
BMW became the first manufacturer to produce a motorcycle with hydraulically damped telescopic forks.

ABOUT :
Most motorcycles today use telescopic forks for the front suspension. The forks can be most easily understood
as simply large hydraulic shock absorbers with internal coil springs. They allow the front wheel to react to
imperfections in the road while isolating the rest of the motorcycle from that motion.

7. If the motorcycle is equipped with ”TELESCOPIC FORKS” the added load on the front wheel is
transmitted through the forks, which compress. This shortening of the forks causes the front end of the
bike to move lower, and this is called brake dive


The main advantages of the telescopic fork are that
(i) it is simple in design and relatively cheap to manufacture and assemble.
(ii) it is lighter than older designs using external components and linkage systems.
(iii) it has a clean and simple appearance that bikers find attractive.

8. Upside Down Fork = Better Driving Behaviour?
No! An upside-down fork definitely does not have an extremely
improved driving behaviour.
In racing, motorcycles with an USD fork benefit from low
unsprung masses, a slightly higher stiffness, as well as a
resulting better wheel guidance that probably only race drivers
can feel.

9. difference between an Upside Down Fork and a Telescopic Fork
The small advantages that a USD fork brings with it are probably only possible to feel on the race
track. The rest is probably prestige … On cheaper and smaller bikes for the city, however, regular
telescopic forks are still used in the classical sense. As already mentioned, they bring the advantages
such as the higher steering angle and a lower weight with it.
So if you are thinking too much about your bike really needs an
USD fork, you can rest assured. You will probably not notice
the difference in the end, USD only sounds great in
the advertising brochure

10. SO FROM THE ABOVE INFORMATION :


THAT IN OUR PROJECT WE WILL USE THE TELESCOPIC FORK FOR FRONT SUSPENTIONS”

11. Earlier, rear suspension was not used in motorcycles and ride quality was maintained by front forks only. However,
with the advancement in technology, manufacturers started adopting rear suspension and are in practice even today.
Swingarm and coil springs are the main components of rear suspension system.

Rear Suspension:

12. Twin shock absorbers
As the name suggests, it refers to two shock
absorbers at the rear end of a motorcycle. these
gave a benefit of increased rear wheel travel
due to which they were highly accepted.

13. A motorcycle swingarm can be assumed as a
quadrilateral portion of a motorcycle in which the
shorter side is connected to the motorcycle’s frame and
the other side is bolted on the rear wheel axle around
which the wheel turns. In many motorcycles, the
swingarm is present only on one side of it and is called
single-sided swingarm. Though it brings with it the ease
of removing the rear wheel without much effort, it
increases the unsprung weight of rear suspension. That’s
the reason why single-sided swingarm is not commonly
used. With a swingarm,

14. Two Types Of Suspension Are used:

• Twin Shock Absorber
•Mono shock Absorber

15. Mono shock Absorber
With the passage of time, manufacturers started implementing mono
shock absorbers in their motorcycles due to many reasons. After
research, it was found that monoshocks delivered a far better
performance than the conventional twin shock absorbers. In this setup,
a single shock absorber is connected from the swingarm to the
motorcycle’s frame. It is not directly connected to the swingarm,
instead uses a linkage, which helps in providing a rising rate of
damping to the rear. Furthermore, monoshocks eliminate torque from
the swingarm more efficiently, offers better handling and stability and
are easy to adjust than twin shock absorbers as only one unit is used.

16. So I Conclude :

That We Will Use Mono shock Absorber in the rear wheel

17. THANK YOU

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