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Bicycles and theiraccessories
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Road Biketoe clipMetal device attached to the pedals that covers the front of the feet, keeping
the feet in the proper position and increasing pedaling power.
pedal
Part attached to a crank tha t the cyclist rotates to provide the bicycles
power.
front derailleur
Mechanism for changing the front gears by lifting the chain from one chain
wheel to another; it allows the cyclist to adapt to road conditions.
drive chain
Set of metal links meshing with the sprockets on the chain wheel and gear
wheel to transmit the pedaling motion to the rear wheel.
chain stay
Tube connecting the pedal mechanism to the rear-wheel hub.
rear derailleur
Mechanism for changing the rear gears by lifting the cha in from one gear
wheel to another; it allows the cyclist to adapt to road conditions.
reflector
Device returning light toward its source so tha t other users of the road
might see the cyclist.
fender
Piece of curved metal covering part of the wheel to protect the cyclist frombeing splashed.
rear light
Lamp signaling the bicycles presence in the dark.
generator
Mechanism activated by the rear wheel, converting the wheels motion into
electric energy to power the front and rear lights.
carrier
Device attached to the back of the bicycle for carrying bags on each side
and packages on top.
rear brake
Mechanism activated by a brake cable, comprising a
caliper and return springs; it forces a pa ir of brake pads
against the sidewalls to stop the bicycle.
seat tube
Part of the frame leaning slightly to the rear, receiving
the seat post and joining the pedal mechanism.
seat stay
Tube connecting the top of the seat tube with the rear-
wheel hub.
seat post
Component supporting and attaching the seat, inserted to
variable depth into the seat tube to adjust the seats
height.
seat
Small triangular seat attached to the bicycles frame.
tire pump
Device that compresses air and is used to inflate abicycle tires inner tube.
crossbar
Horizontal part of the frame, connecting the head
tube with the seat tube and stabilizing the frame.
down tube
Part of the frame connecting the head tube to the
pedal mechanism; it is the longest and thickest
tube in the frame and gives it its rigidity.
water bottle clip
Support attached to the down tube or the seat
tube for carrying the water bottle.
water bottle
Soft plastic container, with a quick-open cap , for
drinking from.
tire valve
Small clack valve sealing the inflation opening of
the inner tube; it allows air to enter but prevents
it from escaping.
spoke
Thin metal spindle connecting the hub to the rim.
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tire
Structure made of cotton and steel fibers coated
with rubber, mounted on the rim to form the
casing for the inner tube.
rim
Metal circle constituting the wheels
circumference and on which the tire is
mounted.
hubCentral part of the wheel from which spokes
radiate. Inside the hub are ball bearings
enabling it to rotate around its axle.
fork
Two tubes connected to the head tube and
attached to each end of the front-wheel hub.
headlight
Lamp illuminating the ground a few yards in
front of the bicycle.
front brake
Mechanism activated by a brake cable,comprising a caliper and return springs; it
forces a pair of brake pads against the sidewalls
to slow down the front wheel.
brake lever
Lever attached to the handlebars for activating
the brake caliper via a cable.
head tube
Tube using ball bearings to transmit the
steering movement to the fork.
stem
Part whose height is adjustable; it is insertedinto the head tube and supports the handlebars.
handlebars
Device made up of two handles connected by a
tube, for steering the bicycle.
brake cable
Sheathed steel cable transmitting the pressure
exerted on the brake lever to the brake.
shifter
Lever for changing gears via a cable moving the
derailleur.
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Mountain BikeMountain Bike
"Mountain bike" (MTB) is the currently preferred
term for bicycles made for off-road use.
Mountain bikes use 559 mm wheels, have at least
15 speeds, and usually have cantilever brakes.
There was an attempt to make a copyright out of
"MountainBike", but the term has becomegeneric. Some have tried to promote the term "All
Terrain Bike" (ATB) as an alternative, or to
designate some subtle variant of the mountain
bike, but this term has largely fallen into disuse.
The mountain bike is in many ways a hybrid
design, a cross between a BMXbicycle and a
touringbicycle.
Cantilever BrakeA cantilever brake has two separate arms, or
cantilevers, one on each side of the rim. Each arm
has pivots on an independentboss, and the two
arms are usually coordinated and linked by a
transverse (or straddle or crossover) cable that
runs above the top of the tire. The transverse
cable is commonly connected to the main brake
cableby a yoke. In some newer designs, the end
of the main cable becomes half of the transverse
cable, and a short link wire forms the other half.
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Electric BikeThe Power-Assisted Bicycle is an emerging
form of transportation that attempts
to merge the health and environmental
benefits of a bicycle with the convenience
of a motorized vehicle. According to recent
amendments to the Motor Vehicle
Safety Act, a power-assisted bicycle may
have up to 500 watts of electricaloutput and still be legally equivalent to a
human-powered bike on the road
Q:WHAT ARE THE ADVANTAGES OF HAVING AN
ELECTRIC SCOOTER ORMOTORCYCLE?
No noise, no pollution, no fuel, no nasty odors, no
emissions, practically no maintenance, smooth running, easy
operation, low cost energy consumption. But above all you
will never again be concerned with rising gasoline prices.
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Folding BikeDetailed Product Description
20" Wheel, 3 Speeds; Steel Frame
and Forks; Aluminum Alloy Rims;
Front V Brake; Rear Band Brake;
Foldable Pedals; Quick-release
Foldable and Height-adjustable
Handlebar; Quick-release Height-adjustable Seat; Front and Rear
Steel Fenders; Rear Rack; Net
weight: 35 pounds; Gross weight: 39
pounds; Packing size: 32x13x25
inches;
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FRAME TECHNOLOGY greaseflow
2009
Switzerland, the land of precision time pieces,is a place where quality and durability arevalued above all else. Fitting then that thislatest technology was proposed by our SwissProduct Team member. GreaseFlowtechnology makes lubing and caring for aDahon easier than ever. It incorporates agrease port in the hinge and grooved pivotpins. Using a standard grease gun, grease canbe injected into the hinge pivot and streamedthrough the interior grooves. Contaminantsand water are purged so the hinge action stayssilky smooth.
Autolok Technology
2008
AutoLok technology improves safety.
Folding hinges with AutoLok
technology automatically lock shut
when the lever is closed. Simple and
safe.
P.A.Q. Technology
2008
P.A.Q. stands for Packs Away Quickly. A
bike with P.A.Q. technology looks and rides
just like a regular bike, but it can be packed
quickly into a suitcase for easy travel.
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Upride frame geometry
2008
Riding a bike all hunched over and
stretched out may be fine if you have a
need for speed. But thats not what you
want when you just want to head down the
street for a coffee. Enter UpRide frame
geometry, which puts your body in a
naturally comfortable walking position:
your upper body is upright, your head is
high and neck is relaxed, and your legs are
optimally positioned to use gravity to push
down on the pedals.
v-clamp technology
2008
V-Clamp technology is the strongest,
simplest folding technology that weve ever
developed and its found on our top of the
line frames. A solid stainless steel plate
maximizes surface area to securely clamp the
hinge in the closed position. Stainless steel
hardware and brass bushings provideoutstanding durability.
LockJaw Hinge Technology
2007
The perfect hinge is strong, light, and virtually invisible.
With the LockJaw, were pretty darn close. Bikes
equipped with the LockJaw hinge look just like regular
bikes you have to get up close and look really hard to
see where the bike folds. With a LockJaw hinge, you can
fold your bike in seconds; but lock the hinge and you
have an exceptionally stiff frame.
FRAME TECHNOLOGY
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Novelty Bike
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Materials and ComponentsFRAMESMountain bike technology has come a long way
since the first derailleur was placed on a ballooner.
For instance, the frame of the mountain bike comes
in many different materials. The most readily used
materials are steel, chromoly, aluminum, carbon
fiber and titanium.
Steel frames are most readily used in departmentstore bikes and lower end mountain bikes. Steel is
extremely strong and allows for a rigid frame, but
can be considered too heavy for most riders.
Aluminum is next in line after steel and is the most
common material used in bike frames. Its
lightweight and efficient frame transfers power
straight from the rider to the ground.
The last two bike frame materials, carbon fiber and
titanium, are for those riders who want to shave
every last gram of excess weight off their bikes
while still having the benefits of a stiff and rigid
frame. Only the more experienced riders can
appreciate the light, yet strong design that comes
along with the extra cost. With technological
advancements in carbon fiber, bike manufacturers
such as Cannondale, have moved from thermoset
carbon fiber to thermoplastic carbon fiber, allowing
the frame to weigh as much as a half a pound lessthan the previous models.
FRONT SUSPENSION
The main purpose of a front suspension
fork is to create a smoother ride for the
biker. This is accomplished not only by
absorbing the impact from bumps and
jumps, but also by dampening the
rebounding effect as the spring unloads.
The front suspension is part of the fork,
and most designs have a shock on eitherside of the wheel.
REAR SUSPENSION
Although rear suspension is similar to
front suspension in that it allows for a
smoother ride, it also has other important
attributes that cannot be found on a
hardtail.For instance, rear suspension was
first introduced for downhill riding
because it eliminated a lot of the jutting
forces created in the back of the bike from
steep and rugged downhill descents.
WHEELS
A bike wheel consists of the tire,
the rim, the spokes and the hub.
The most important aspect to
consider when choosing a wheel is
the strength to weight ratio. The
lighter the wheel, the less force is
required for acceleration and the
easier it is to climb those
excruciating hills.
PEDALS
There are three categories of pedals:
platforms, clips and clipless. The platform
pedal is the most inexpensive and is
recommended for light recreational riding.
The next step up from the platform pedals
is clips, which resemble cages that encase
the toe and the front part of the foot. The
most expensive and most effective pedals
are called clipless pedals. They are
considered a necessity for competitive
riders and can only be used with the
proper shoes. The bottom of the bike shoe
is specially designed to click into the
pedal to allow for greater circular power,
but at the same time permit easy release.
Most riders who switch to clipless pedals
have tipped over at least once because
they have forgotten to clip out.
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Materials and ComponentsElastomer
An elastic polymer, a springy plastic used
commonly as a spring or shock absorber,
particularly in suspension forks and similar
mechanisms. An "elastomer fork" is a
suspension fork which uses elastomers as the
active suspension element. Elastomers are also
used in some suspension stems, seatposts andsaddles.
Suspension"Suspension" refers to devices using some kind
of spring to protect the rider and/or the bicycle
from the effects of riding on rough surfaces.
Modern suspensions usually include some sort
ofdamping mechanism.
Seat PostThe tubular support that holds the saddle. The
seat post telescopes into the seat tube of the
frame, providing the adjustment for saddle
height. It is usually secured by apinch bolt at
the top of th seat tube. Older seat posts, and
those on cheap bicycles, are basically pieces of
pipe, perhaps with a different diameter (usually
7/8" / 22.2 mm) at the top end. A separate clampattaches the saddle to this type of seatpost.
Modern, high-quality seat posts have the saddle
clamp mechanism built into the top of the post.
This type is also commonly referred to as
"microadjusting" because it permits a finer
degree of adjustment of the saddle angle.
SaddleFrequently called a "seat", a bicycle's saddle is
not intended to support the rider's entire weight.Traditional saddles are made of leather stretched
over a metal frame, hammock style. This type of
saddle requires care and carefulbreaking in, but
when this is done the classic leather saddle
moulds itself to fit the particular anatomical shape
of its rider.
Most cyclists have never experienced the comfort
of a well broken-in leather saddle, because most
modern bicycles come with plastic saddles which
require no break in or other maintenance. Plastic
saddles are also lighter and cheaper than leatherones.
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Manufacturing MethodsMass production (also called flow production, repetitive flowproduction, series production, orserial production) is the production of large
amounts of standardized products, including and especially on assembly lines.
Advantages and disadvantages
The probability of human error and variation is also reduced, as tasks are
predominantly carried out by machinery. A reduction in labour costs, as well as an
increased rate of production, enables a company to produce a larger quantity of oneproduct at a lower cost than using traditional, non-linear methods.
However, mass production is inflexible because it is difficult to alter a design or
production process after a production line is implemented. Also, all products produced
on one production line will be identical or very similar, and introducing variety to
satisfy individual tastes is not easy. However, some variety can be achieved by
applying different finishes and decorations at the end of the production line if
necessary.
InjectionMouldingInjection moulding is a highly automated production process for
producing large quantities of identical items. Granulated or
powdered thermoplastic material is
heated, melted and then forced under pressure into a mould. Once
in the mould the material cools, forming a component that takes on
the shape of the mould cavity
Extrusion
This process can be compared to squeezing toothpaste from a
tube. It is a continuous process used to produce both solid and
hollow products that have a constant cross-section.
E.g. window frames, hose pipe, curtain track, bike frames.
BlowMoulding
Extrusion blow moulding is an automated process that is used
extensively to make bottles and other lightweight , hollow parts
from thermoplastic materials.
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Manufacturing MethodsForging
Forging is a process of forming metal parts by the use of heat
and pressure. Forging develops a grain structure in the metal,
which makes it stronger in the direction that it has been
stretched. Forging is done in special molds called "dies", and
when the dies are properly designed to take advantage of the
grain structure introduced by the forging process, the resulting
parts are stronger in the important directions than thosemanufactured by CNC machining
CastingThe forming of metal parts by pouring molten metal or other
material into a mould. This is the cheapest way of making large
quantities of parts that are of shapes that cannot be produced by
stamping. The parts are not generally as stong as those that can
be made by forging, and parts made in a re-usable mould
cannot be of as complicated shape as is possible with CNC
machining frombillets, because some shapes cannot beremoved from a mould without breaking it. An exotic form of
casting, called investment casting or "lost wax" casting permits
casting of complicated shapes by using single-use plaster
moulds that can be broken apart to free the cast part from the
mould. This is an expensive process used mainly for high
quality lugs and fork crowns.
BrazingBrazing is the joining of metal parts by melting a different
metal (of lower melting point) which bonds the parts together.
Typically brazing involves joining steel parts with molten
brass. Soldering is a similar operation, using lower
temperatures and different filler metals (with a lower melting
point) In brazing and soldering, the filler metal penetrates
inaccessible areas of the joint by capillary action.
Fillet BrazingA process in which frame tubes arebrazed directly
to one another, without the use oflugs. The "fillet"
(pronounced "fill-it") is the strip of brass melted
along the seam to connect the steel parts. The fillet is
usually filed smooth, so that the tubes seem to flow
smoothly into one another with no sharp transitions.
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StructureDifference between a Road Bike and a Triathlon Bike
FrameThe skeleton of a bicycle. The most common
type of frame is called the "diamond" frame,
and consists of two (of three, depending on how
you look at it) triangles.
The front triangle consists of the seat
tube, the top tube, and the down
tube...well, it also includes the headtube, so is is not a perfect triangle, but
the head tube is usually fairly short, so
it is pretty close to being a triangle. The
front triangle holds the saddle, the
bottom bracket, and, via the headset,
the front fork.
The rear triangle (or triangles, if you
count both sides separately) includes
the seat tube, seat stays and chain stays.
The diamond frame has evolved over the course
of more than a century, and every dimension hasbeen tinkered with and fine tuned to the point
that it is a nearly perfect design for the tubular
materials commonly used. This is not to say that
it is the ultimate, however. For some
applications the cross frame is still viable, and
for moldable materials, monocoque designs may
yet eclipse the diamond. It is also not at all clear
that the diamond design lends itself to
suspension applications.
Mixte
A style oflady's frame in which the "toptube" consists of a pair of small diameter
tubes running more-or-less straight from
the upper head lug, past the seat tube, and
on to the rearfork ends. A mixte frame
thus has 3 sets of rear stays, instead of the
usual two. A variant on the mixte uses a
single, full sized top tube running from the
upper head tube to the seat tube, but
retains the middle set of stays. A lady's
type bike that lacks the middle pair of
stays is not a mixte.
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Chro-Moly (Steel)
Chro-moly is a fancy name for steel. Steel is heavy. But, steel
is stiff. A frame made with chro-moly will usually have small
tubes. To help reduce weight many steel frames have thin
walled tubes. But remember, the thinner the tube walls are the
less stiffness you'll have.
Positives:
* Very Strong
* Stiff Ride
* Durable
* Cheap
Negatives:* Heavy
* Prone To Rusting
Aluminum
Aluminum is one of the most common frame materials
because it is light and fairly affordable. Aluminum provides
the rider with a very stiff ride. Aluminum frames have large
diameter tubes that help improve strength and stiffness. Thismaterial is often used for unique frame shapes.
Positives:
* Light
* Stiff
* Inexpensive
* Rust-Proof
Negatives:
* Less Strength Than Steel
* Can Break Under Heavy Use
* Difficult To Repair
* Thin Walled Tubes Dent Easy
Carbon Fiber
Carbon fiber frames are very strong and stiff. They are
made by braiding fibers of carbon and affixing them with
a very strong glue (epoxy). These kind of frames allow
for unique frame shapes because they can be molded to
the proper shape much easier than metal alloys.
Positives:
* Great Strength
* Great Stiffness
* Very Light
* No Rust
Negatives:
* Expensive* Prone To Breakage
Titanium
In my opinion, titanium is one of the best materials for
any frame. It combines a great balance of lightness,
strength, durability, and stiffness.
Positives:
* Super Light* Very Strong
* Rust Proof
* Great For Large Riders
Negatives:
* Very Expensive
* Somewhat Flexible (compared to steel)
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StructureHubs
modern hubs of decent quality are made ofaluminum. Better-
quality hubs are usually made by forging, and only forged hubs
should be used forradial-spoked front wheels. I would generally
advise avoiding overpriced "boutique" hubs which are made by
CNC machining, since theirflanges are usually weaker than those
of forged hubs.
SpokesThe material of choice for spokes is stainless steel. Stainless is strong
and will not rust. Cheap wheels are built with chrome-plated
("UCP")or zinc-plated ("galvanized") carbon-steel spokes, which are
not as strong, and are prone to rust. The leading brands of spokes
available in the U.S. market are DT and Wheelsmith.
Titanium is also used for spokes, but, in my opinion it is a waste of
money. Titanium spokes should only be used with brass nipples, which
makes a combination that is not significantly lighter than stainless
spokes with aluminum nipples.
Carbon fibre spokes have been available, but turned out to be brittle
and dangerous.
NipplesNipples are commonly made of nickel-plated
brass. This is a good material choice, becausebrass takes very smooth threads, and brass nipples
don't get corroded into position too easily. For
light-weight, high-performance wheels,
aluminum nipples are available. Aluminum
nipples do save a small amount of weight, and
they can be quite reliable if used properly. They
should only be used with rims that have eyelets of
some material other than aluminum, because
aluminum/aluminum contact between rim and
nipple can result in chemical welding,
immobilizing the nipples.
RimsOlder rims were made out of steel, but
steel rims are now obsolete, and only
found on the cheapest, crummiest
bicycles. Aluminum rims have
superceded steel, because they are
lighter, stronger, rust-proof and provide
better braking. Modern rims are made
of extruded aluminum, that is, the
semi-molten aluminum is squeezed out
of specially-shaped openings which
determine the cross section of the rim.
The extrusions are formed into hoops,
then joined either by welding or by the
insertion of a filler piece into the
hollows of each end of the rim.
Many good quality rims have "eyelets"
or "ferrules" to reinforce the spoke
holes.
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ControlBicycle and motorcycle dynamics is the science of the motion
ofbicycles and motorcycles and their components, due to the
forces acting on them. Dynamics is a branch ofclassical
mechanics, which in turn is a branch ofphysics. Bicycles and
motorcycles are both single-track vehicles and so their motions
have many fundamental attributes in common.
Bike motions of interest includebalancing, steering,braking,
suspension activation, and vibration. Experimentation and
mathematical analysis have shown that a bike stays upright when
it is steered to keep its center of mass over its wheels. This
steering is usually supplied by a rider, or in certain
circumstances, by the bike itself. Long-standing hypotheses and
claims that gyroscopic effect is the main stabilizing force have
been discredited.
While remaining upright may be the primary goal of beginning
riders, a bike must lean in order to maintain balance in a turn:
the higher the speed or smaller the turn radius, the more lean is
required. This is necessary in order to balance the centrifugal
forces of the turn with the gravitational forces of the lean. When
braking, depending on the location of the combined center of
mass of the bike and rider with respect to the point where the
front wheel contacts the ground, bikes can either skid the front
wheel or flip the bike and rider over the front wheel.
Gyroscopic effect on front wheel of a
bike. Appling a torque (in green) about
the lean axis results in a reaction torque
(in blue) about the steer axis.
If the bike and rider are considered to be a single system, the forces that
act on that system and its components can be roughly divided into two
groups: internal and external. The external forces are due to gravity,
inertia, contact with the ground, and contact with the atmosphere. The
internal forces are caused by the rider and by interaction between
components.
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Environmental ImpactEconomic implications
Bicycle manufacturing proved to be a training ground for
other industries and led to the development of advanced
metalworking techniques, both for the frames themselves
and for special components such asball bearings, washers,
and sprockets. These techniques later enabled skilled
metalworkers and mechanics to develop the componentsused in early automobiles and aircraft.
Carbon Footprint
People looking to reduce their carbon footprint have been advised
that cycling is a low carbon way to get around.
An individuals carbon footprint is a measurement of a persons
negative impact on the environment. Everyone has a carbon
footprint, it does not only apply to industry and business. It relates
closely to the amount of pollution a person creates through the useof energy (for example electricity) and resources such as fossil
fuels. Environmental pollution can be created every time we get
into a car, bus, train or plane by the burning of fuel. Every time we
use something that has been manufactured we also add to our
carbon footprint.
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Technology UsedDifferent gears and ranges of gears are
appropriate for different people and styles of
cycling. Multi-speed bicycles allow gear
selection to suit the circumstances, e.g. it
may be comfortable to use a high gear when
cycling downhill, a medium gear when
cycling on a flat road, and a low gear whencycling uphill. In a lower gear every turn of
the pedals leads to fewer rotations of the rear
wheel. This allows the energy required to
move the same distance to be distributed
over more pedal turns, reducing fatigue when
riding uphill, with a heavy load, or against
strong winds. A higher gear allows a cyclist
to make fewer pedal cycles to maintain a
given speed, but with more effort per turn ofthe pedals.
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Technology Used: How
Hydraulic Machines Work
The Basic Idea
The basic idea behind any hydraulic system is very simple:
Force that is applied at one point is transmitted to
another point using an incompressible fluid. The fluid is
almost always an oil of some sort. The force is almost
always multiplied in the process. The picture below shows
the simplest possible hydraulic system:
A Simple hydraulic system consisting of two pistons and
an oil-filled pipe connecting them.
In a motor vehicle, the term powertrain orpowerplant
refers to the group of components that generate power
and deliver it to the road surface, water, or air. This
includes the engine, transmission, driveshafts,
differentials, and the final drive (drive wheels,
continuous tracklike with tanks or Caterpillar tractors,
propeller, etc.). Sometimes "powertrain" is used to refer
to simply the engine and transmission, including the
other components only if they are integral to the
transmission. In a carriage orwagon, running gear
designates the wheels and axles in distinction from the
body.
Powertrain
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Operating Principles
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The way Technology is used to enhance the
Operation and Safety of the Bike.The bicycle has undergone continual adaptation
and improvement since its inception. These
innovations have continued with the advent of
modern materials and computer-aided design,
allowing for a proliferation of specialized bicycle
types.
Much more power can be generated
during a challenging hill climb with
these clip-less pedals because it
connects the rider to the bike to create
a full circular motion when riding.
Titanium
Mountain bike pedal axle
The metal is strong and has low density;
it is ductile when
pure and malleable when heated.
Titanium Oxide is used as the
white pigment in paints.
Name Titanium
Composition Pure MetalMelting point
Ferrous no
Hardness hard
Weight light
Strength strong
Conductor of heat and electricity yes
Resistant to wear yes
Resistant to corrosion yes
Can be welded yes
Can be cast yes
Polishes well yes
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biologic arx grips
2009
BioLogic Arx grips build on the success of
BioLogic AirFlo grips with a revised and
improved shape. The result is even better
support for the palm of your hand and a hand
position that minimizes numbness over long
rides. The improved support lets you relax
your hands more during long rides and this
results in less fatigue and more control when
you need it. BioLogic Arx grips also feature a
lock-on feature that keeps the grips in place
and a triple density design that puts a soft
compund rubber just where you need it.
biologic joule II dynamo hub
2009
Theres nothing we like better than clean
energy. A hub dynamo is the most efficient
way to generate electricity for your bike
light. Embedded with a series of small
magnets, the hub generates electricity when
it rotates while you ride. The new Joule II
has been completely re-engineered,reducing weight by 149 grams and
increasing efficiency by 10%.
biologic traveller rack
2009
Just because the bike has smaller wheels doesnt
mean that the load gets smaller. Thats why we
went back to the drawing board to redefine what a
touring rack for a 20 bicycle can be. The
BioLogic Traveller Rack fits most full-size
panniers, and still leaves enough heel clearance for
those blessed with larger feet. Lateral stiffness
has also been improved and it even features a
recessed rear light and handy hand hold for lifting
the bike. The Traveller Rack is a must have for any
serious touring ride.
Component Technology
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Component Technologygerman a kilo suspension fork
2009
We dont like to brag, but the German A Kilo
fork that we developed with suspension meisters
German A is far and away the best compact
suspension fork on the market. It is light,
incredibly stiff, and extremely sensitive to forces
both large and small because of a parallelogramdesign that is inherently lower in stiction than
standard telescoping suspension forks. The
geometry of the fork is also engineered to
counteract brake dive.
radius v handlepost
2009
The Radius features patented Fusion
technology that integrates frame, fork, and
handlepost into one immensely strong unit.
New V-Clamp technology utilizes a stainless
steel plate to clamp the entire assembly and
delivers substantially improved stiffness.
schwalbe marathon supreme tires
2009
Working closely with Schwalbe, Dahon has
developed a 406 mm version of the top of the
line Marathon Supreme tires. These tires feature
an inner layer of Vectran, an amazingly dense
fabric woven with a patented process that is
virtually impenatrable to thorns and the otherdebris you are likely to meet on the road.
Vectran is twice as tear resistant as titanium and
five times stronger than steel. Because Vectran
is so strong, only a thin sheet of fabric is enough
to protect the tire and inner tube, making the
Marathon Supreme nearly 50% lighter than any
other touring tire. The Marathon Supreme also
features a proprietary new compound that
features best in class wet grip. Independent tests
show that cyclists can corner up to 17% faster
on tires using this compound.
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Component TechnologyDahon Neos 2.0 derailleur
2008
The original low-profile Dahon Neos
derailleur caused an important paradigm shift
in the derailleur industry: even the big S is
now designing low profile derailleurs that are
more protected from damage. The new Neos
2.0 is the next evolutionary step withupgraded materials and reduced weight.
Dahon F.I.T. Stem
2008
Getting just the right handlebar height with a
traditional stem/handlebar set-up is a pain.
Typically, you can only adjust bar height in 5
mm increments. With the new Dahon F.I.T.
stem, you get 50 mm of on-the-fly vertical
adjustment, with no increase in weight orcomplexity.
kore i-beam seatpost/saddle
2008
The patented I-Beam system replaces the
traditional saddle rail design with a single
carbon composite beam. The benefits are a
dramatic reduction in weight, 200% more
foreaft adjustment, and superior strength. We
collaborated with Kore to develop our owncustom saddles and seatposts.
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Turtleneck Seat Post Collar2007
Obsession isnt always a good thing but in
the case of our new Turtleneck seatpost
clamp, were pretty pleased. We took every
complaint weve ever had with the seatpost
collars that weve traditionally used and
eliminated them with the Turtleneck. The QR
lever is 30% longer than standard QR levers
more leverage equals less force needed to
operate the lever and more clamping force on
the clamp so your seatpost stays in place. TheQR lever also has a nice flat surface which
means that there are no sharp edges digging
into your fingers when you operate the QR.
A brass bushing instead of the plastic
normally used means better durability. A
recessed 2 mm bolt firmly locks the seat
collar in place so that it doesnt twist when
operating the QR lever. And finally, the
collar tapers in towards the seatpost helping
keep mud and dirt out. Its hard to believe
such small details can bring such happiness!
SYNTACE VRO HANDLEBAR SYSTEM
2005
Syntace is a small German company renowned for
their incredibly light but brutally strong stems and
bars. The innovative Syntace VRO handlebar system
allows adjustment of handlebar height and reach for
perfect rider fit. We've integrated the VRO system
into our Radius ProLite handlepost. The Syntace VRO
system is substantially stronger, lighter and stifferthan traditional adjustable stems.
compact front hub
1982
Why mess with an industry standard hub diameter? To
improve it and to optimize it for smaller wheels, that's
why! As a rim gets smaller in size, the bracing angle of
the spokes changes. If you lace a standard 100 mm hub
into a 20" or 16" rim, you end up with spoke bracing
angles that are too small, which results in a weakerwheel. To solve this problem, we pioneered the
Compact narrow width front hub, which over the years
has become a standard in the folding bicycle industry.
Our compact hubs are also lighter and allow a more
compact fold than a standard 100 mm width hub.
Component Technology