The Wiki's front stash pocket and padded corduroy laptop compartment that fits 15" and 17" laptops helping you get you out of the house and on your way in the morning. You don't even have to take your laptop out of this bag to start working.
The Axiom Transition Laptop Pannier bag allows you to take your laptop with you wherever you go whether your commuting to work or class, the Transition gives you a padded and weather resistant way to safely take your laptop along.
1000 denier waterproof nylon
Seam sealed waterproof compartments
Padded water-resistant laptop holder
Plastic wear guards on bottom
Low profile for urban commuting in all weather
Cover zips over rack mounting hardware when bag is off the bike
Reflective piping
Seam-sealed waterproof compartments
Padded water resistant laptop holder
Plastic wear guards on corners
Cover zips over mounting hardware
The high level fabric used in all Axiom bags has exceptionally low off-gassing characteristics that exceed even European standards
To choose the appropriate bearings for your application, match the bearing ID number, for example, "6903" with the number from the bearing you are replacing
The Dakar XCR Comp's MP3 suspension system features enhanced lateral and torsional stiffness, helping you put all of your pedal power on to the trail. The MP3 suspension system is the 3rd generation of Jamis's World Cup caliber Dakar design, it features a near vertical wheel path that helps to minimize pedal feedback.
The XCR's optimized design that helps to keep it's weight down while making it more functional with features like cable and hose routing along the bottom of the top tube. All of this helps to make the Dakar XCR a bike that is comfortable, functional without a drop in performance.
Easton EA30 micro-adjust seatpost, 350mm x 27.2mm with alloy clamp and QR seatpin
WTB Rocket V Comp with SL top and steel rails
Weight(claimed): 28.75 lbs
Jamis Dakar XCR Comp '07 Geometry
13"
15"
17"
19"
21"
Center of BB to Top of TT
315
353
404
438
477
Effective Top Tube Length
534
557
579
602
612
Head Tube Angle
71°
71°
71°
71°
71°
Seat Tube Angle
74.5°
74.5°
74°
74°
73.5°
Chainstay Length
430
430
430
430
430
Wheelbase
1032
1055
1072
1095
1101
Fork Rake
38
38
38
38
38
Bottom Bracket Height
310
310
310
310
310
Headtube Length
115
115
120
140
150
Standover Height
695
725
770
795
820
All measurements in millimeters
Allbikes come with JenonUSA's complementary Free Pro Build Service, pleaseallow 3 business days for your bike to be assembled, inspected andpacked before shipping.
Please allow 3 days for assembly prior to shipment.
The Via Nirone 7 is a strong road bike that features an aluminum construction with a sloping geometry helping to give you plenty of pedaling speed, while still being responsive.
Get it with Dura-Ace for just $2,999. As listed below, but with Shimano Dura-Ace 7800 series cassette, F&R derailleurs, F&R brake calipers, and integrated shift/brake levers. To order this kit, call (888) 880-3811.
The 928 Carbon is a stiff and agile road bike that features a lightweight Carbon Monocoque frame making this a bike that accelerates like a rocket and handles like a sports car.
The 928 Carbon Lug is a fast and agile bike that is designed with speed in mind the frame offers rigidity while still absorbing small bumps. This lightweight bike provides excellent stability and butter smooth handling with a quality Dura Ace gruppo.
The Eastern NightTrain is a bike that is equally at home in the dirt as it is on the street with a strong Cromo frame and build the NightTrain is ready roll.
21.5" T/T, Chainstay: 14.7" slammed/ 15" to center, 72 degree headangle
RockShox Argyle 318 fork, 80mm, 20mm thru
Internal Headset
Eastern Stealth Crank/ Medusa Light 25t Sprocket
Eastern Spanish BB
Eastern Chromo 1.6t handlebar
Eastern Choker stem
Eastern Rib Grips
Sealed Bearing 32H front hub, with disc mount, 20 MM axle
Eastern MTB single speed cassette hub 135mm, 14mm axle, 36H, 12t one piece driver, with disc hub mt.
Kinlin DDT rim, 32h
2.0mm Stainless steel 14G UCP spokes, black, with brass nipples
Kenda Small Block 8 front tire, 26x2.35
Kenda NPJ 1052 rear tire, 26x2.10
Avid Juicy 3 rear brake, 6" Rotor
1 Piece 12T Driver cassette, 6 paw
1 Eastern Byrd Peg
Eastern Dual-Concave Pedals, loose ball bearing
All bikes come with JenonUSA'scomplementary Free Pro Build Service, please allow 3 business days foryour bike to be assembled, inspected and packed before shipping.
Price: 1199.99
21.5" T/T, Chainstay: 14.7" slammed/ 15" to center, 72 degree headangle
RST Space Free fork, Coil Spring/MCU, 80mm, Cromo Steerer
Internal Headset
Eastern Raptor Cranks, 175MM with Eastern 25T Medusa Lite Sprocket
Eastern Spanish BB
Eastern Steel 2.0t handlebar
Eastern Choker stem
Eastern Rib Grips
Eastern Sealed Bearing 32H front hubs, with Disc Mount, 20 MM axle
Eastern MTB LB-9 single speed cassette hub 135mm, 14mm axle, 36H, 12t driver, with disc hub mt.
Wienmann HL32 rim, Kinlin BM25
2.0mm Stainless steel 14G UCP spokes, black, with brass nipples
Kenda Small Block 8 front tire, 26x2.35
Kenda NPJ 1052 rear tire, 26x2.10
Tektro cable actuated disc 6" rotor brakes
Tektro ML-570 brake lever
1 Piece 12T Driver, 6 paw cassette
1 Eastern Byrd peg
Wellgo LU 313 pedals, Molded Pin
Allbikes come with JenonUSA's complementary Free Pro Build Service, pleaseallow 3 business days for your bike to be assembled, inspected andpacked before shipping.
Price: 699.99
The '07 Dragon Comp is a quick and agile XC race bike that is constructed with smooth riding Reynolds 631 steel making this a responsive bike that is fund to ride.
Reynolds 631 seamless air-hardened chromoly main tubes, reinforced head tube collars, double-butted cromo stays, Jamis lost wax dropouts
Easton EA30, 6D x 90mm (13-15"), 105mm (17") 120mm (19-21")
Easton EA30 seatpost micro-adjust, 350mm x 27.2mm with alloy clamp
WTB Rocket V Comp saddle with SL top and steel rails
Jamis Dragon Comp '07
13"
15"
17"
19"
21"
Center of Bottom Bracket to Top of Top Tube
299
356
410
461
511
Effective Top Tube Length
539
565
584
603
613
Head Tube Angle
70.5°
71°
71°
71.5°
71.5°
Seat Tube Angle
74°
73.5°
73.5°
73°
73°
Chainstay Length
425
425
425
425
425
Wheelbase
1026
1042
1062
1071
1082
Fork Rake
38
38
38
38
38
Bottom Bracket Height
297
297
297
297
297
Head Tube Length
85
85
90
110
148
Standover Height
684
717
748
784
827
All measurements in millimeters
Allbikes come with JenonUSA's complementary Free Pro Build Service, pleaseallow 3 business days for your bike to be assembled, inspected andpacked before shipping.
29'ers are here to stay and the '07 Dakota 29'er is a great way to jump into the 29'er scene. The Dakota 29'er is both strong and stable, featuring a quality list of of Shimano Deore XT and LX components making this a bike that is fun to ride and can go places a 26" can't.
7005 triple-butted Superlight" aluminum main tubes, straight-shot seatstays, gusseted down tube, extended seat tube with support strut, replaceable derailleur hanger
Rock Shox Tora 318 Air with remote lockout features 100mm of air-sprung/Motion Control damped suspension, 32mm tapered wall cromo stanchions, and adjustable rebound
All bikes come with JenonUSA's complementary Free Pro Build Service, please allow 3 business days for your bike to be assembled, inspected and packed before shipping.
Teach your child to ride and learn balance skills with no training wheels. A very low seat, no pedals, and simple design yield a very low center of gravity - helping your child build confidence and learn the skills needed to progress to their first bike.
Designed for children 2-5 years old
Lightweight steel frame
Puncture-proof foam tires are maintenance free. Never add air or fix a flat tire
An automobile or motor car is a
wheeledmotor
vehicle for
transportingpassengers,
which also carries its own
engine or motor. Most definitions of the term specify that automobiles are
designed to run primarily on roads, to have seating for one to eight people, to
typically have four wheels, and to be constructed principally for the
transport
of people rather than goods.[1]
However, the term "automobile" is far from precise, because there are many types
of vehicles that do similar tasks.
Automobile comes via the
French language, from the
Greek language by combining auto [self] with mobilis [moving];
meaning a vehicle
that moves itself, rather than being pulled or pushed by a separate animal or
another vehicle. The alternative name car is believed to originate from
the Latin word
carrus or carrum [wheeled vehicle], or the
Middle English word carre [cart]
(from
Old North French), and karros; a
Gallicwagon.[2][3]
As of 2002, there were 590 million passenger cars worldwide (roughly one car
per eleven people).[4]
Although
Nicolas-Joseph Cugnot is often credited with building the first
self-propelled mechanical vehicle or automobile in about 1769 by adapting an
existing horse-drawn vehicle, this claim is disputed by some, who doubt Cugnot's
three-wheeler ever ran or was stable. Others claim
Ferdinand Verbiest, a member of a
Jesuit mission in China, built the first steam-powered vehicle around 1672
which was of small scale and designed as a toy for the Chinese Emperor that was
unable to carry a driver or a passenger, but quite possibly, was the first
working steam-powered vehicle ('auto-mobile').[5][6]
What is not in doubt is that
Richard Trevithick built and demonstrated his Puffing Devil road
locomotive in 1801, believed by many to be the first demonstration of a
steam-powered road vehicle although it was unable to maintain sufficient steam
pressure for long periods, and would have been of little practical use.
François Isaac de Rivaz, a Swiss inventor, designed the first
internal combustion engine, in 1806, which was fueled by a mixture of
hydrogen
and oxygen and
used it to develop the world's first vehicle, albeit rudimentary, to be powered
by such an engine. The design was not very successful, as was the case with
others such as
Samuel Brown,
Samuel
Morey, and
Etienne Lenoir with his
hippomobile, who each produced vehicles (usually adapted carriages or carts)
powered by clumsy internal combustion engines.[8]
In November 1881 French inventor
Gustave Trouvé demonstrated a working three-wheeled automobile that was
powered by electricity. This was at the International Exhibition of Electricity
in Paris.[9]
An automobile powered by his own
four-stroke cycle gasoline engine was built in
Mannheim,
Germany by
Karl Benz in 1885 and granted a
patent in
January of the following year under the auspices of his major company,
Benz & Cie., which was founded in 1883. It was an
integral design, without the adaptation of other existing components and
including several new technological elements to create a new concept. This is
what made it worthy of a patent. He began to sell his production vehicles in
1888.
Community Action for Sustainable Transport - Draft 18.11.2008
This policy uses some strategies first developed by Motorcycling
Australia.
Background
For trips where public transport, walking and cycling are not good
options people should consider using a two-wheeled motor vehicle (TWMV)
rather than a car.
Switching from a car to a motorcycle, scooter or electric bike is an
easy way for people to reduce congestion, greenhouse emissions and save
money on fuel.
TWMVs make more efficient use of fuel, road space and parking space than
a single occupant car and can play a part in the campaign to reduce
congestion and climate change.
When driven below the speed limit TWMVs also pose less of a safety risk
to other road users than cars, trucks and buses due to their weight.
TWMVs are a more affordable transport option than driving a single
occupant car, and will also help preserve oil reserves for essential
agricultural, medical and transport uses.
All levels of Government should be doing more to encourage people to
switch from their car to TWMVs.
Proposed strategies
More free parking spaces for TWMVs at activity centres and public
transport nodes. Parking must be safe, conveniently located and ensure
pedestrian, wheelchair and cyclist access is not obstructed. Car parks
should be reclaimed for TWMV parking where possible.
Inclusion of two-wheeled motor vehicles in National Road Transport
policies
Reduction in registration fees for TWMVs
Provision of TWMV-only lanes on key arterial roads
Exemption from tolls on tolled roads and infrastructure for TWMVs
Mandatory TWMV parking to be included in the construction plans for new
buildings
Integration of TWMVs into the planning for Public Transport projects,
such as park and ride for bikes.
A national standard that restricts the speed of new TWMVs available for
the general public to 120km/hr
Advertising campaigns to encourage people to switch from a car to a
two-wheeled motor vehicle
Government purchase of electric bicycles for use by employees and
citizens
Fuel efficiency, in its basic sense, is the same as
thermal efficiency, meaning the efficiency of a process that
converts chemical potential energy contained in a carrier
fuel into
kinetic energy or
work. Overall fuel efficiency may vary per device, which in turn may
vary per application, and this spectrum of variance is often illustrated
as a continuous
energy profile. Non-transportation applications, such as
industry, benefit from increased fuel efficiency, especially
fossil fuel power plants or industries dealing with combustion, such
as
ammonia production during the
Haber process. The United States Department of Energy and the EPA
maintain a Web site with fuel economy information, including testing
results and frequently asked questions.
In the context of
transportation, "fuel efficiency" more commonly refers to the
energy efficiency of a particular vehicle model, where its
total output (range, or "mileage" [U.S.]) is given as a
ratio of
range units per a unit amount of input fuel (gasoline,
diesel, etc.). This ratio is given in common measures such as "liters
per 100
kilometers" (L/100 km) (common in Europe and Canada or "miles
per gallon"
(mpg)
(prevalent in the USA, UK, and often in Canada, using their respective
gallon measurements) or "kilometres per litre"(kmpl) (prevalent in Asian
countries such as India and Japan). Though the typical output measure is
vehicle range, for certain applications output can also be
measured in terms of weight per range units (freight)
or individual passenger-range (vehicle range / passenger capacity).
This ratio is based on a car's total properties, including its
engine
properties, its body
drag, weight, and
rolling resistance, and as such may vary substantially from the
profile of the engine alone. While the thermal efficiency of
petroleum
engines has improved in recent decades, this does not necessarily
translate into fuel economy of
cars, as people in
developed countries tend to buy bigger and heavier cars (i.e.
SUVs will get less range per unit fuel than an
economy car).
Hybrid vehicle designs use smaller combustion engines as electric
generators to produce greater range per unit fuel than directly powering
the wheels with an engine would, and (proportionally) less
fuel emissions (CO2
grams) than a conventional (combustion engine) vehicle of similar
size and capacity. Energy otherwise wasted in stopping is converted to
electricity and stored in batteries which are then used to drive the
small electric motors. Torque from these motors is very quickly supplied
complementing power from the combustion engine. Fixed cylinder sizes can
thus be designed more efficiently.
"Energy efficiency" is similar to fuel efficiency but the input is
usually in units of energy such as British thermal units (BTU),
megajoules (MJ), gigajoules (GJ), kilocalories (kcal), or kilowatt-hours
(kW·h). The inverse of "energy efficiency" is "energy intensity", or the
amount of input energy required for a unit of output such as
MJ/passenger-km (of passenger transport), BTU/ton-mile (of freight
transport, for long/short/metric tons), GJ/t (for steel production),
BTU/(kW·h) (for electricity generation), or litres/100 km (of vehicle
travel). This last term "litres per 100 km" is also a measure of "fuel
economy" where the input is measured by the amount of fuel and the
output is measured by the
distance travelled. For example:
Fuel economy in automobiles.
Given a heat value of a fuel, it would be trivial to convert from
fuel units (such as litres of gasoline) to energy units (such as MJ) and
conversely. But there are two problems with comparisons made using
energy units:
There are two different heat values for any hydrogen-containing
fuel which can differ by several percent (see below). Which one do
we use for converting fuel to energy?
When comparing transportation energy costs, it must be
remembered that a
kilowatt hour of electric energy may require an amount of fuel
with heating value of 2 or 3 kilowatt hours to produce it.
The specific energy content of a fuel is the heat energy obtained
when a certain quantity is burned (such as a gallon, litre, kilogram).
It is sometimes called the "heat of combustion". There exists two
different values of specific heat energy for the same batch of fuel. One
is the high (or gross) heat of combustion and the other is the low (or
net) heat of combustion. The high value is obtained when, after the
combustion, the water in the "exhaust" is in liquid form. For the low
value, the "exhaust" has all the water in vapor form (steam). Since
water vapor gives up heat energy when it changes from vapor to liquid,
the high value is larger since it includes the latent heat of
vaporization of water. The difference between the high and low values is
significant, about 8 or 9%.
In
thermodynamics, the thermal efficiency ()
is a
dimensionless performance measure of a thermal device such as an
internal combustion engine, a
boiler,
or a
furnace, for example. The input,
,
to the device is
heat, or
the heat-content of a fuel that is consumed. The desired output is
mechanical
work,
,
or heat,
,
or possibly both. Because the input heat normally has a real financial
cost, a memorable, generic definition of thermal efficiency is[1]
When expressed as a percentage, the thermal efficiency must be
between 0% and 100%. Due to inefficiencies such as friction, heat loss,
and other factors, thermal efficiencies are typically much less than
100%. For example, a typical gasoline automobile engine operates at
around 25% thermal efficiency, and a large coal-fueled electrical
generating plant peaks at about 46%.
The largest diesel engine in the world peaks at 51.7%. In a
combined cycle plant, thermal efficiencies are approaching 60%.[2]
The
second law of thermodynamics puts a fundamental limit on the thermal
efficiency of heat engines. Surprisingly[citation
needed], even an ideal, frictionless engine can't
convert anywhere near 100% of its input heat into work. The limiting
factors are the temperature at which the heat enters the engine,
,
and the temperature of the environment into which the engine exhausts
its waste heat,,
measured in the absolute
Kelvin
or
Rankine scale. From
Carnot's theorem, for any engine working between these two
temperatures:
This limiting value is called the Carnot cycle efficiency
because it is the efficiency of an unattainable, ideal, lossless (reversible)
engine cycle called the
Carnot cycle. No heat engine, regardless of its construction, can
exceed this efficiency.
Examples of
are the temperature of hot steam entering the turbine of a steam power
plant, or the temperature at which the fuel burns in an internal
combustion engine.