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Volkswagen Touareg successfully tows a Boeing 747
A Volkswagen Touareg V10 TDI has succeeded in towing a Boeing 747-200 weighing approximately 155 tonnes. Watched by engineers, Volkswagen personnel and bemused passers-by, the Touareg V10 TDI completed seven complete runs on the auxiliary runway at Dunsfold Aerodrome, 40 miles south west of London.
The vehicle was a standard production Touareg fitted with a special towing adaptor to connect it with the aircraft towing link and loaded with 4.3 tonnes of metal ballast to bring its total weight to just over seven tonnes (7,030 kg) including the driver, an engineer from the technical department at the company’s headquarters in Germany.
The car’s engine, self-levelling air suspension, wheels, tyres and structure were all standard. One precaution that turned out to be unnecessary was the fitment of the 4.56 axle ratio from the Touareg V8 model in place of the 3.27 gearing of the V10. This was established as the demonstration was conducted in the second of the Touareg’s 12 forward gears rather than first. The final modification was to change the outer body panels for photographic purposes so that this example was visually the same as the next generation Touareg which is due to be launched next year.
The attempt was designed to demonstrate the reserves of strength and durability of the Touareg V10 TDI. This model won The Caravan Club Towcar of the Year Awards full-size 4x4 category in 2004 and 2005 and has established itself as the benchmark diesel SUV, offering an extraordinary combination of performance and fuel efficiency since it was launched in 2003.
A theoretical towing capability in excess of 200 tonnes was calculated by multiplying the 553 lbs ft of torque generated by the V10 TDI engine through the standard transmission’s lowest ratio and without taking into account the torque multiplication benefits of the torque converter. This however assumed a dry surface and loading the Touareg’s body and suspension well in excess of its rated limits.
An initial trial was carried out successfully in Germany with an operational Boeing 747-400 weighing 190 tonnes but it subsequently became difficult to obtain an aircraft for the length of time and in an appropriate location to conduct a press demonstration. Colleagues therefore requested Volkswagen UK to obtain a suitable aircraft and location.
The result was an ex-British Airways Boeing 747-200 weighing 155 tonnes. The aircraft, first flown in 1980 and retired last year retains its full complement of 500 seats, 11 toilets and complete landing gear, albeit without an operating braking system. The original engines were removed last year to make way for dummy items used in the filming of a recent motion picture. Despite this, the aircraft still weighs 155 tonnes, due in part to the 28 tonnes of water held on board in the fuel and nose tanks.
The changes to the Touareg are more modest. Modifications extend to the addition of 4,345 kg of ballast in the form of steel plates set behind the front bumper and beneath the engine. The balance of the ballast was made up by bags of steel ***** weighing 25 kg each. The result is a split of 2,755 kg over the front axle and 4,275 kg over the rear to bring the total to 7,030 kg which includes Uwe Krieghoff, the nervous driver. He was not prepared to say how much his body contributed to the 7,030 kg total.
Conditions for the attempt were far from perfect. A strong headwind combined with torrential rain and resulting standing water prompted concerns over traction on the wet surface. Despite the scale of the attempt the vehicle needed little preparation. The engine was warmed up before a brief visual inspection of the tyres prior to the attempt being given the green light.
The Touareg’s standard towbar (fitted with an adapted towing bracket) was hooked up to the nose wheel collar of a Boeing 747 and the chocks were removed. At the wheel Uwe selected ‘drive’ and the low ratio, second gear setting on the Touareg’s six-speed gearbox. The required tractive effort is at its highest during the initial pull to overcome the static friction of the aircraft tyres on the runway. Flatspots form on the aircraft’s 18 tyres under the 155 tonnes of weight and additional resistance must be overcome to get the aircraft rolling.
Uwe pressed the accelerator around halfway down in second gear before easing off as the aircraft gained momentum. With no visible loss of traction the Touareg began dragging the 231 ft airframe of the 747 along the runway, maintaining an even five mph in the process. Having covered an estimated 150 metres the driver eased back on the throttle before slowly engaging the Touareg’s brakes to slow both the vehicle and the aircraft to a stop.
After the attempt Uwe commented: ‘I was a bit disappointed we couldn’t find something heavier to tow as it was a bit too easy! If anyone could lend us a heavier aircraft then please let us know.’
The vehicle was checked after the repeated runs and no side effects of the demands made on the engine and transmission could be found. The engine temperature remained normal, as did the transmission and the tyres survived without a hint of the forces passed through them.
sources:
Touareg V10 TDI tows a 747 - Autoblog Volkswagen News | Volkswagen Touareg successfully tows a Boeing 747 Images deleted since they were too big, please post images that fit within the screen - Mod team
finally a replacement for the diesel engines on a train.......
indian railways get ready
This is funny... I just saw the lastest episode of Fifth Gear(date: 4th Dec) and in that episode one of the presenters, Tom, did the exact same stunt with the exact same car and plane, and doing the same modifications...They even showed him driving it and everything... with no engineer beside him, like its said here in the article... Funny, that its not mentioned here at all... hmm...
Excuse me for asking, but which 4x4 cannot tow a 747?
I'm sure that even a Mahindra MM540 4x4 should be able to do it, with the right ballast weight and wide radial tires. It has more to do with the compliance of the 747 to be towed than special abilities of the 4x4 concerned.
However, if one is looking for extreme capabilities, there are tractor pull events which push man and machine to severe limits. I witnessed one in the northern outskirts of Ottawa, Ontario, Canada.
In these there is a standard load which slides up a ramp getting more and more difficult until the tractor gives up.
Tractor pulling is a competitive motorsport. Hobby vehicles and rigs are modded for extreme torque.
They drag a metal sled down a designated course. This sled has a heavy payload of lead plates.
These plates mechanically winch forward, as the sled progresses along the course.
Competitors pulling this ever-increasing load eventually lose forward speed, momentum and torque.
Winners sometimes reach the end of the course. The start to finish distance is measured to a precision of 0.01 inch.
The competitor which pulled the sled the farthest distance is declared winner. If multiple competitors reach this far, a run-off is held. Here heavier weights and/or greater distance is used to pick a winner amongst the winners.
Ram
Quote:
Originally Posted by Samurai
(Post 384653)
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Is this guy for real.. Have you seen what all he has accomplished.. Man..Mind bowing..
Godfather
It would have been a better test if they had pulled the 747 after removing its tyres.
It would take some irresponsibility to try to drag a 747 on rims without tires! The undercarriage may collapse and the belly may rip open, writing off the hull !
Air-India's Boeing 747 Model400 with Rolls-Royce RB211-524H turbofans, weighs 183 tons when empty and 395 tons when fully loaded. Fuel consumption is 277 ft/litre -- that is -- the 747 consumes a litre of fuel (aviation kerosene) for cruising 1.2 body lengths at 910 km/h.
The big machine costs US$ 380 million [Rs. 1684 crore], fully furnished.
For comparision:
A Mercedes S500 Pullman [W220] with 5-litre V8 306 bhp/460 Newton-m costs
just US$ 236,000 [Rs. 105 lakh].
And the humble AM General HMMWV (military Humvee)
costs a bare US$ 75,000 [Rs. 33 lakh]
Ram
Americans are so obsessed with hauling stuff around. They are better off with big turbodiesels instead of big vortec/hemi petrol V8s. But yes, the extreme towing competitions are fascinating to watch.
YouTube - Me at the Truck Pull
Quote:
Originally Posted by sajo
(Post 384864)
Americans are so obsessed with hauling stuff around. They are better off with big turbodiesels instead of big vortec/hemi petrol V8s. But yes, the extreme towing competitions are fascinating to watch. YouTube - Me at the Truck Pull
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Methinks Americans have an appetite for both:
the Chevrolet Silverado 3500HD "Big Dooley" dualie crew-cab fifth wheel hauler with the Duramax 6.6 litre V8 turbodiesel, as well as the Chevrolet Camaro with the 303 bhp@5600 5.3 litre V8 Corvette motor with Electronic drive-by-wire throttle control.
ya i saw the clip of guy from Fifth gear doing it at the top gear track. and they even had to put in extra weight to the already heavy toureg to do it
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