Airless tire test Humvee vs Hummer
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
Naked surfing girls
Bigfoot 5 In Action!
Heres a little montage of Bigfoot 5 in action!
Please note that I did not make this video
All footage in this clip is from the late 80's to early 90's and owned by
the Bigfoot Monter Truck inc.
BIGFOOT #5 - Specifications
- Transmission = C-6 automatic
- Engine = 460 c.i.
- Fuel Type = High octane racing gas
- Shocks = 16 BIGFOOT Signature Series Shocks
- Axles = 5 ton military planetaries and Detroit lockers
- Weight = 28,000 lbs. (38,000 with duals)
- Height = 15' 6"
- Width = 13' 1" (20' 5" with duals)
- Tires = 120 x 48 x 68 Firestone Alaska tundra tires, weighing approx.
2400 lbs. each
Biggest ATV in the world goes through our pit!
OK, after many requests I decided to take our big show bike, the largest
ATV in the world, through our pit. It has 32" tires Silverbacks on it, the
largest ATV tires made. The end of the pit did get a little deep. Check
out the vid of the XMR for comparison of how deep the pit is on a 7" lifted
ATV with 21" of ground clearance.
Tim Cotterill " The Frogman", Rocket 2 Trike. Size Does Matter
Was driving on the PCH in Malibu, when I saw Tim on this beast getting
ready for a cruise... He designed the whole thing. It's an all aluminum,
hand built body. Suspension is all original designed out of steel. 1200hp,
supercharged (obv). The front wheel is a custom machined 1 piece 2 tire
Watch the skidmarks @ 1:22.....
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.