From Wikipedia, the free encyclopedia
Non-pneumatic tires (NPT), or Airless tires, are tires that are not supported by air pressure. They are used on some small vehicles such as riding lawn mowers and motorized golf carts. They are also used on heavy equipment such as backhoes, which are required to operate on sites such as building demolition, where tire puncture is likely. Tires composed of closed-cell polyurethane foam are also made for bicycles and wheelchairs. The main advantage of airless tires is that they cannot go flat, but they are far less common than air filled tires.
Airless tires generally have higher rolling resistance and provide much less suspension than similarly shaped and sized pneumatic tires. Other problems for airless tires include dissipating the heat buildup that occurs when they are driven. Airless tires are often filled with compressed polymers (plastic), rather than air.
Michelin is currently developing an integrated tire and wheel combination, the "Tweel" (derived from "tire" and "wheel," which, as the name "Tweel" suggests, are combined into one new, fused part), that operates entirely without air. Michelin claims its "Tweel" has load carrying, shock absorbing, and handling characteristics that compare favorably to conventional pneumatic tires. Automotive engineering group of mechanical engineering department at Clemson University is developing a low energy loss airless tire with Michelin through the NIST ATP project.
Resilient Technologies and the University of Wisconsin--Madison's Polymer Engineering Center are creating a "non-pneumatic tire", which is basically a round polymeric honeycomb wrapped with a thick, black tread. The initial version of the tire is for the Humvee and is expected to be available in 2011.
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pewag tire/tyre protection chains in hot slag operation
pewag tire/tyre protection chains
Very high temperatures, liquid steel slag, large and solid scrap pieces,
concrete driveways, etc. mean toughest working conditions. pewag's
successful answer: reinforced, highly wear resistant and customized chain
Concorde Crash From Start To Finish Air France Flight 4590
Other interesing videos http://creativegrouptv.com/
Using cuts from the Air Crash Investigation programme, I have compiled
together the events of Air France Flight 4590 crash from start to finish. I
own none of the clips shown in this video, nor do i own the music.
Air France Flight 4590 was a Concorde flight operated by Air France which
was scheduled to run from Charles de Gaulle International Airport near
Paris, to John F. Kennedy International Airport in New York City. On 25
July 2000, it crashed in Gonesse, France. All one hundred passengers and
nine crew members on board the flight died. On the ground, four people were
killed with one left injured.
The flight was chartered by German company Peter Deilmann Cruises. All
passengers were on their way to board the cruise ship MS Deutschland in New
York City for a 16-day cruise to South America.
This was the only fatal crash of a Concorde. It was the beginning of the
end for the Concorde as an airliner; the type was retired three years
Air France Concorde flight 4590 takes off with fire: Concorde crash that
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Obstacle Course, Hill Climb, and Coal Chute! - Top Truck Challenge 2013
Purchase the Top Truck Challenge DVD here!
The Obstacle Course begins with a shockingly tall and long slippery hill
descent known as the "first hill" and it ends with a nasty dogleg gully
that's tantalizingly close to the finish line. In between is a treasure
trove of terror. The "lower section" forces competitors to navigate a
360-degree turn through three deep water holes and sand. From there,
competitors travel up a hill to the "upper section" that includes a
deceiving off-camber U-turn (known as "U-turn Hill"), two deep water holes,
and numerous tight turns. This event has a 10-minute time limit, but speed
is the enemy. This is because the course is marked with numerous cones and
each one hit adds 20 seconds to the overall time. If all four tires of a
rig travel outside a cone the rig is disqualified at that point. Safety
violations net a whopping two-minute penalty. Clearly, accuracy is the key
to success in the Obstacle Course.
Think back to those hillclimbs you've done in your 4x4. Yeah, the TTC Hill
Climb isn't like that. The Hill Climb is built specifically for TTC, it's
approximately 600 feet in length and it has an average angle of
approximately 60 degrees. It twists and turns as it winds through the
poison oak and it's peppered with strategically-placed deep holes and dirt
hills. Yes, we added hills to our Hill Climb. The Hill Climb is loose,
steep, and unpredictable. Naturally, we don't let drivers see it before
they run it because that would ruin the surprise. The Hill Climb rewards
those who can think on-the-fly and punishes those who are thinking about
the next event. We allowed each competitor 5 minutes to tackle the hill and
during that time they could stop, reverse, or winch. If a competitor
exceeded the time limit, traveled out of bounds, or violated a safety rule
they were disqualified at that point.
The Mini Rubicon, a staple of Top Truck for years, was a brutal event that
forced competitors to fight for every inch of forward progress. It was
tough and unforgiving. We wanted something tougher. So, for 2013 we
replaced the Mini Rubicon with the awe-inspiring Coal Chute. This event
uses a newly developed area (Rock Rash Ridge) at the Hollister Hills SVRA
that contains an amazing collection of man-made obstacles. Naturally, we
tweaked it to make it exclusive to Top Truck. Our mind-bending course was
approximately 525 feet in length, and included steep walls in excess of 7
feet tall and jumbles of rocks and cement tubes. We even brought in a water
truck and created a waterfall on the final cement climb. The course was
broken into four distinct sections. We threw competitors a curve ball and
allowed them to skip one of the two first sections. However, we penalized
each competitor 10 minutes if they bypassed the first section and 6 minutes
if they bypassed the second section. Strategy was a major player at this
event. There was a 20-minute time limit and safety violations netted a
two-minute penalty. If two of the vehicles tires traveled outside of the
cones the competitor was disqualified at that point.
Catch the entire week of Top Truck Challenge 2013 on the Motor Trend
Channel October 7th through October 11th with a new video premiering each
Subscribe now to make sure you're in on all the action!
Facebook - http://facebook.com/motortrendmag &
Twitter - http://twitter.com/motortrend & https://twitter.com/fwmag
Google+ - https://plus.google.com/1018679678590...
Website - http://www.motortrend.com &
Four girls reactions to 900hp Nissan GTR
http://www.InductionPerformance.com - How will four girls react to a 900 horsepower Nissan GTR
by Induction Performance? As seen dominating at the 2013 FL2K event, watch
and see how J "tezza" Camacho, Stephanie Wilson, Kimi Beattease, and Mary
F. White react to their first ride in a 9 second Nissan GT-R!
2012 Nissan GTR specifications:
-Induction Performance Custom Tune
-Induction Performance Stage 2 Package
-Precision turbo & Engine Stage 1
-Injector Dynamics 1000cc Injectors
-Induction Performance Built 3.8 VR38 Engine
-Jacks Transmissions Drag 800 Transmission
-Boost Logic Race Intercooler Kit
Meet the models! Check out their Facebook pages for more pics, info, and
J 'tezza' Camacho
Owner of TezzaVision Productions
Model for Blue Chair Bay Rum
Mary F. White
About Induction Performance:
A leader of automotive innovation and performance, Induction Performance
has been supplying the world of speed-savvy enthusiasts with ample amounts
of Boost for years. Built on the
premise of daily driven, reliable performance, Induction Performance is
ready to turn your car into a work of speed and art!
Learn more about Induction Performance by visiting below:
What's that chrome car? Appearing in this video is the 2014 Ford Fiesta ST
from my involvement as an agent for the #FiestaMovement. Ford provided me
with a 2014 Ford Fiesta, gas, insurance, and admin costs.
Ice Flow Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0
Real Man's 4WD Track
A Land Rover Defender drives up a "Real Man's" 4WD track.
One brave soul attempted it in a Landcruiser but failed before even getting
both sets of wheels on the ramp. He is currently at home trying to fix his
The video was taken at the Maitland 4WD & Camping Show 2009 and the
ramp is 5.5M above the ground.
The majority of the drive is done with the driver seeing nothing but sky.
Panic brake from 246kmh
Text at the end (sorry for my english): never stare on speedometer when
trying to set your own speed record!
2010 Mercedes-Benz Biome Concept
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At the 2010 Los Angeles Design Challenge, the designers from the
Mercedes-Benz Advanced Design Studios in Carlsbad, California, surprised
everyone with a revolutionary vision. Taking their inspiration from nature,
they designed a vehicle which is fully integrated into the ecosystem, from
the moment of its creation right through to the end of its service life.
The Mercedes-Benz BIOME Concept grows in a completely organic environment
from seeds sown in a nursery. Out on the road the car emits pure oxygen,
and at the end of its lifespan it can be simply composted or used as
"As the inventor of the motor car, we wanted to illustrate the vision of
the perfect vehicle of the future, which is created and functions in
complete symbiosis with nature. The Mercedes-Benz BIOME Concept is a
natural technology hybrid, and forms part of our earth's ecosystem. It
grows and thrives like the leaves on a tree" according to Hubert Lee, Head
of the Mercedes-Benz Advanced Design Studios in Carlsbad. This year the
competition had called for the creation of a vision of a safe and
comfortable 2+2 compact car featuring good handling and a first-class
design, and weighing only 1,000 lbs (around 454 kg/kerb weight).
Mercedes-Benz symbiosis - a partnership with nature
The Mercedes-Benz BIOME Concept symbiosis vehicle is made from an
ultralight material called BioFibre and tips the scales at just 875.5 lbs
(around 394 kg). This material is significantly lighter than metal or
plastic, yet more robust than steel. BioFibre is grown from proprietary DNA
in the Mercedes-Benz nursery, where it collects energy from the sun and
stores it in a liquid chemical bond called BioNectar4534. As part of this
process, the vehicle is created from two seeds: The interior of the BIOME
grows from the DNA in the Mercedes star on the front of the vehicle, while
the exterior grows from the star on the rear. To accommodate specific
customer requirements, the Mercedes star is genetically engineered in each
case, and the vehicle "grows" when the genetic code is combined with the
seed capsule. The wheels are grown from four separate seeds.
The Mercedes-Benz BIOME Concept is powered by BioNectar4534, which is
stored in the BioFibre material of the chassis, interior, and wheels. In
addition, Mercedes-Benz has developed a technology to equip trees with
special receptors which can collect the excess solar energy and turn it
into BioNectar4534. This creates a direct link with nature's energy sources
and acts as an incentive to cover mobility energy requirements through more
trees and at the same time maintain natural resources. Like plants, the
Mercedes-Benz symbiosis vehicle also produces oxygen, thereby contributing
to improving air quality. At the end of its service life, the Mercedes-Benz
BIOME can be fully composted or used as building material. Thanks to the
exclusive use of green technologies, the BIOME vehicle thus blends
seamlessly into the ecosystem.