most important factor in the mind of every bike owner and user is,
TO GET MORE MILEAGE / AVERAGE.
TO MAKE MY BIKE LAST LONGER.
To understand the factors that affect the mileage of any bike, let
us first understand how the human body works. Just as petrol is
fuel for bike, the fuel for human body is OXYGEN==the AIR we breathe.
To understand how to make the bike last longer, take a look at the
CHEETAH==FASTEST animal in the world. It can run at 120 km per hour.
The normal life span of CHEETAH is 14 years, that is, it LASTS for
14 years. As against this, look at TORTOISE, the SLOWEST animal
in the world which moves at 120 INCHES per hour. Its life span is
300 years, that is, it LASTS for 300 years.
The same LAW OF NATURE that applies to cheetah and tortoise, applies
to human being, and also applies EXACTLY the same way to bikes.
how we humans breathe. When we are walking normally we breathe about 18 times per minute but when we
run fast, we breathe about 72 times per minute. Since AIR is the
fuel for living humans and animals, this means that when we run
fast we consume 72 units of our fuel (==air), while if we travel
the same distance by normal walking, we consume only 18 units of
our fuel (==air). Thus by running, we consume FOUR times MORE amount
of fuel than we consume by walking the same distance. This is law
of nature and applies exactly same way to bikes.
Thus we understand that by driving our bike faster, the bike consumes
more petrol (==fuel) for same distance. It is not only faster road
speed that consumes more petrol. Even if we travel slower, in a
low gear (such as first or second gear), while the bike is moving
slow, the engine is running (turning) faster than if we travel at
same slow road speed in top (==4th or 5th) gear. This is like human
climbing steps or hill. Because while
climbing, even though our speed is even slower than normal walking,
we have to do MUCH GREATER EFFORT to move upwards, because we are
moving against (opposite to) the GRAVITATIONAL force of Earth which
is always pulling us downwards.
So we know that when engine has to make greater effort (that is
engine turns / runs faster), it consumes more petrol. There are
two factors which resist all kinds of motion on earth, whether it
is bike in motion, car in motion or human walking or running. One
factor is the friction between tire and road surface (like our feet
and road surface while walking or running) and the other is the
friction between moving body and air. While friction between road
surface and tire is necessary (we cannot move at all if there is
friction, like skidding on wet road surface) for controlled motion,
the friction between body and air INCREASES as our speed increases.
By research it has been found that at speed of 40 km per hour, 40%
of power (==petrol) is used for overcoming air friction (==air resistance)
and 60% of power (==petrol) is used to move forward, whereas at
speed of 80 km per hour, 80% of power / petrol is used for overcoming
air friction (==air resistance), while only 20% of power / petrol
is used to move forward. Thus, by moving at 40 km per hour speed,
we are actually saving 40% of power (==petrol), which we waste for
overcoming air friction resistance when we travel at 80 km per hour
speed. This is because at lower travel speed, the air friction resistance
is lower and lesser petrol / power is required to move forward than
at higher speed.
Having understood the law of nature that applies to all kinds of
motion, whether human walking or climbing, or bike moving slow in
low gear, or bike moving fast in top gear, what can we do to reduce
petrol consumption? We can adopt the following driving style:
1>> Avoid traveling in low gear as much as possible. At any speed, try
to stay in as high gear as possible without bike giving jerks due
to chain snatch or engine stalling.
using brakes as much as safely possible because by using brake we
are wasting energy (==petrol).
3>> Avoid higher speed, because at higher speed we are wasting energy
(==petrol) in overcoming air friction resistance rather than covering
distance, which is our objective.
In addition to above driving style, we can TAKE the following TEN
brakes as free (loose) as possible, so that they do not un-necessarily
touch (and waste energy==petrol) when we do not need them.
air pressure in tires to the recommended level because less air
in tires creates higher friction resistance between tire and road
surface, and wastes petrol.
clutch well adjusted, because slipping of clutch wastes petrol.
engine oil at recommended intervals and use genuine engine oil of
recommended grade to reduce friction losses in engine and keep engine
air filter regularly.
drive chain and sprockets (with kerosene and brush) regularly (every
2000 km) and lubricate it with thick oil or grease.
Also check and adjust chain tension regularly.
carburetor, especially float chamber and jets, and also clean spark
plug regularly every 2000 km.
check for leakages of petrol from fuel cock, cracked fuel pipes,
fuel filter, and all pipe joints. I have found this to be the single
most common reason for not getting good mileage.
all cables by putting drops of oil between cable inner and
outer to reduce friction. Also put grease on all cable ends, both
both axles (front and rear) and steering cone bearings regularly
(every 2000 km).