bicycles and their accessories

8/3/2019 Bicycles and Their Accessories

1/27

Bicycles and theiraccessories


2/27

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.


3/27

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.


4/27

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.


5/27

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.


6/27

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;


7/27

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.


8/27

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


9/27

Novelty Bike


10/27

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.


11/27

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.


12/27

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.


13/27

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.


14/27

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.


15/27

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)


16/27

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.


17/27

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.


18/27

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.


19/27

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.


20/27

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


21/27

Operating Principles


22/27


23/27

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


24/27

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


25/27

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.


26/27

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.


27/27

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

bicycles and their accessories

Documents