L5-3 Into the Wild · Schwinn bikes. He saw the bikes that kids were making. He made his own bike....
Transcript of L5-3 Into the Wild · Schwinn bikes. He saw the bikes that kids were making. He made his own bike....
Contents
Two Wheels ......................1
A New Kind of Bike .........6
What You Need ..............11
Wheelies and Hops ........15
Bike Safe ........................20
Catch Air!.......................23
Two Wheels
In 1817 a man named
Von Drais had a great
thought. He made a bike
with two wheels. It was
made from wood. All it
had was a seat. The bike
was f ine for downhil l
glides.
1
2
In 1865, a foot crank
was added. This bike
was cal led a ‘bone
shaker’. Riding on stone
streets was not a smooth
trip.
In 1870, the ‘high
wheel’ bike was made. A
high wheel with three
wheels was made for
girls in long skirts.
Soon brakes were
4
added to bikes. Steering
pitfalls were fixed.
By the 1890s, bikes
had two wheels of the
same size. There was a
chain drive on the rear
wheel . After these
changes, bikes were
safer. They became a
smart way to get from
place to place.
Then some grown-ups
started driving cars .
More bikes were made
for kids . Bikes in the
1920s looked slick and
flashy.
In the 1950s, bikes for
kids and teens became
sleeker. They weighed
less. They looked more
like today's bikes.
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6
A New Kind of Bike
In the 1960s, kids started
building bikes. They made
the bikes from spare
frames and parts. These
bikes were ‘tricked out’.
They had ‘ape hangers’
and low-rider seats. They
were built to look a bit like
hot rods and choppers.
Al Fritz worked for
Schwinn bikes. He saw the
bikes that kids were
making. He made his own
bike. The Sting-Ray® was
born.
The Sting-Ray® looked
cool. The wheels could also
be changed. The BMX bike
comes from the Sting-
Ray®.
7
Y-shaped bars and
grips help BMX bikes
make tight turns and do
tricks. The rear wheel
has a swing arm and big
shocks. When the back
wheel hits a bump, i t
swings up and turns.
The strong springs in the
shocks move the wheel
back into place.
The wheels have thick
8
10
rims and strong spokes.
Deep tire treads help
grip the track. The front
fork legs have shocks
that help steer.
The heart of the bike
is its strong frame and
welded joints. It has a
lot of flex. The bike can
take a beat ing on the
track.
High Frequency Words
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but can could
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27
! FALL 2007
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