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Bobby Tatroe & Wingfoot Express II

 
Wingfoot Express II prior to
arriving on the salt flats of Utah in 1965. |
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Bobby Tatroe posing in front
of Wingfoot Express II. |
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Wingfoot Express II fitted
with 25 JATO rockets that deliver 1000 lbs
of thrust each. Thats 25000 lbs of thrust - 5 miliseconds
to full power. |
 
Getting final OK to run from
U.S.A.C. official to run. |
 
Wingfoot Express II in final
preparation for a run in 1965. |
Another contender during the jet-car battle between Craig
Breedlove and Art Arfons in 1965 was the innovative Wingfoot
Express II, the new creation of Art Arfons' brother Walt.
Walt Arfons Wingfoot Express II was the first real rocket-powered
contender for the outright Land Speed Record. Others had tried
this kind of propulsion before him: Fritz von Opel had powered
vehicles from cars to train-sleds with solid fuel rockets,
albeit without any serious LSR ambitions.
Even Mickey Thompson is known to have experimented with additional
power from rockets on his Challenger 1. But until Arfons'
creation, none had ever seriously engineered an Land Speed
Record contender around that concept of propulsion.
Walt Arfons designed a car often described as looking like
an Atlas rocket lying on its side. The car sure looked like
it would go faster than anyone before, even a supersonic record
seemed to be within reach, but eventually little success would
come from the experience.
The JATO rockets ("jet assisted take-off" rockets,
designed to help military planes to take-off "more easily")
had too short a burn time to last through the entire length
of the course: even when fired in sequences (which initially
had to be done manually by intrepid driver Bobby Tatroe),
the rockets would usually burn out long before exiting the
timing trap, the car merely coasting along (at around 400mph!),
and slowing down considerably even before the end of the timing
trap.
With the initial 15-rockets configuration, the best top speed
thus recorded was way below the record which stood at 536.71mph
(average).
With the addition of 10 more rockets (protruding from the
sides of the "fuselage") success was still not at
hand, even thought driver Bobby Tatroe reached a peak speed
of 580 mph, on one pass Bobby was lucky to escape unhurt from
a spectacular fire when one of the rockets dislodged and caused
severe fire damage to the rear of the car at very high speed.
The car, even if not an Land Speed Record holder, is surely
one of the most terrific designs that ever hit the Bonneville
salt flats in Utah.
After the failed attempt, Walt Arfons and Wingfoot Express
II did not return to the salt and it is believed that Arfons
cut up the Wingfoot Express II rocket car.

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