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Bob's Hook :: Bob Burwell
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Download the print size image here.
Material: GFEC 6.2 - 6.4 mm (original boom was probably hand made resin + fibres)
Weight: 136g
Weighting: none
Distance: 120 m ("max 120m" written on the original boom)
[2001] Bob Burwell of Australia was one of the main figures of LD in the 1970s and early 1980s. He broke the World Record several times during that period. The rules were somewhat different from what we have today, though. The distance was measured only on a straight line perpendicular to the throwing base line. So even if the boomerang went out further more to the right or left of that line, this extra distance was not accounted for. One of Bob's throws, measured at 111m with that method, was reported to go out "at least 120m" maximum distance slighlty off the perpendicular line. The plan is based on a boomerang Tibor got from Bob in 1998. It was probably built in the 1980s. It is heavy and thick, and the airfoil is VERY blunt on the wing tips. Sophisticated low lift / low drag airfoil design was only introduced later, among others by Volker Behrens. It is therefore only with brute force that you can get this boomerang to fly 120m out and back !
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