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Name: El Toro Design: Based on the 'Come-back' as described in Boemerangs of Ger Schurink Constructed by: Martijn Koolloos Date: 1989 Revision: Repainted en varnished Date revision: April 2005 Material: Berch plywood Thickness: 8 mm. Wing chord: 55 mm. Lengte arm: 440 mm Wingspan: 640 mm. Weight: 250 gr Characteristics: This is my first hand-made boomerang and really awful. Makes a rather low circular path with a diameter of ±30 meter. Performs best with moderate wind (windforce 3-4). Has to be thrown with a lot of force and effect at 90° from the wind. |
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Name: Space Orbit Design: Based on the 'halve circel' as described in Boemerangs of Ger Schurink Constructed by: Martijn Koolloos Date: 1989 Revision: Inroduction of holes, reduction of thickness, improvement of profile, repainted en varnished Date revision: May 2005 Material: Berch plywood Thickness: 5 mm. Wing chord: 35 mm. Wingspan: 335 mm. Diameter holes: 7 mm. Weight: 50 gr Characteristics: Makes a loop path with a diameter of ±25 m and climbs in the second half of the flight. It has to be thrown straight ahead with a good deal of effect and not too hard. Before the revision it was hard to let it return properly. Especially the turbulence holes improved the flight characteristics. |
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Name: Newlon Design: Don Monroe Tucson / Niels K. Jensen Constructed by: Martijn Koolloos Date: May 2005 Material: Berch plywood, 8 layers Thickness: 4 mm. Wing chord: 20 - 45 mm. Wingspan: 295 mm. Heigth: 255 mm. Weight: .. gr Characteristics:A real hard wind boomerang. Makes a circular path with a diameter of 40-50 m and climbs a little in the second half of the flight. Since it has only profile on the wing tips it looses rotational and hence forward speed upon returning. The wind takes it then back home. Has to be thrown hard, practically vertical and straight ahead with a lot of effect. My favourite for the windy Netherlands! Unpainted version |
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Name: Pi Design: France Boomerang Association Constructed by: Martijn Koolloos Date: May 2005 Material: Berch plywood, 8 layers Thickness: 4 mm. Wing chord: 30-40 mm. Wingspan: 375 mm. Heigth: .. mm. Weight: 65 gr Characteristics: Makes a circular path and maintains a high rotational speed. Could use some turbulence, but drilling holes in this one is a shame... Unpainted version |
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Name: Raptor Design: Saraiva Digital Constructed by: Martijn Koolloos Modifications: Lead in wing tips Date: May 2005 Material: Berch plywood, 8 layers Thickness: 4 mm. Wing chord: 20 - 45 mm. Diameter (2x centre to wing tip): 300 mm. Diameter holes: 6 and 5 mm. Weight: .. gr Characteristics: Tuned by slightly upbending the wings. Makes a circular path, that is rather large (Ø20 m) owing to the lead. Holes give enough resistance to diminish rotational speed upon returning, which makes it good catchable. Click here for WMV-movie of Raptor flight with close fly-by.. Unpainted version |
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Name: Enduro 1000 Design: Patrick Prady. Constructed by: Martijn Koolloos Modifications: Only one hole per wing and without lead. Date: August 2005 Material: Berch plywood, 8 layers Thickness: 4 mm. Wing chord: 19 - 35 mm. Diameter (2x centre to wing tip): 320 mm. Diameter holes: 21 mm in centre, 6 mm in wing. Weight: 35 gr Characteristics: Makes a low circular path with a diameter of ca. 20 m. Returns pretty good at thrower. Unpainted version |
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Name: Big Fuzzy Design: Axel Heckner (original Fuzzy). Constructed by: Martijn Koolloos Modifications: Slightly upscaled Date: September 2005 Material: Poplar plywood, 5 layers Thickness: 5 mm. Wing chord: 30 - 40 mm (centre-part). Wingspan: 355 mm. Heigth: 225 mm. Weight: 45 gr (incl. lead) Characteristics: Makes a large low circular path and returns nicely. They say a perfect Australian Round BR... |
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Name: Seastar Design: Patrick Prady. Constructed by: Martijn Koolloos Modifications: Considerably upscaled Date: September 2005 Material: Poplar plywood, 5 layers Thickness: 5 mm. Wing chord: 58 mm. Diameter (2x centre to wing tip): 560 mm. Diameter holes: 55 mm in centre, 10 mm in wing tip. Weight: .. gr Characteristics: Makes a circular path with a diameter of ca. 25 m. Climb in last part, hovering back to thrower. Good catchable! Click here for WMV-movie of Seastar flight with a very close fly-by.. |
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Name: Ooldea Design: Based on the 'Ooldea' as described in Boemerangs of Ger Schurink Constructed by: Martijn Koolloos Date: Oktober 2005 Material: Poplar plywood, 5 layers Thickness: 5 mm. Wing chord: 35 - 40 mm. Wingspan: 445 mm. Heigth: 205 mm. Weight: .. gr Characteristics: Makes a low circular path with a diameter of ca. 15 m. Passes low behind thrower and makes a second small circle. Dangerous but fun! |
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Click on pic at left to see missed in action BRs |
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