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© Kangan Batman TAFE 2006. 1
KANGAN ROO ProjectKANGAN ROO ProjectR&D by Kangan Batman TAFE R&D by Kangan Batman TAFE then collaboration with CATEAthen collaboration with CATEA
Evolution of a concept, research, proof of concept, development, build, research, build, research, collaborate, research, build …
Then the hard part commercialise.
Design process by Colin Johanson
© Kangan Batman TAFE 2006. 2
Identify Need or Problem
Electric wheelchairs built to suit large percentile of users – too heavy.
Motors inefficient – old technology.
Batteries a major weight component.
It HAS to look stylish and visually less dominant – see the person not the chair
© Kangan Batman TAFE 2006. 3
Rear Wheel Drive Chair
© Kangan Batman TAFE 2006. 4
Front Wheel Drive Chair
© Kangan Batman TAFE 2006. 5
Mid Wheel Drive Chair
© Kangan Batman TAFE 2006. 6
Six Wheel Mid Drive Chair
© Kangan Batman TAFE 2006. 7
Sports Manual Chair
© Kangan Batman TAFE 2006. 8
Look at Sports Chair for Power
Follows body to be less visually obtrusive
Light weight frame – power/weight ratio
New technology materials – titanium frame
Easier to transport, better ride, more compact
Apply this thinking to powered solution
© Kangan Batman TAFE 2006. 9
Design Timeframe
1981 - Initial concept imagined of mid wheel, wheelchair with five to six wheels. But needed better motors and batteries.
2003 – Presented idea to Institute.
2004 – Research at RESNA Conference.
2004 – Built “Proof of Concept” prototype
© Kangan Batman TAFE 2006. 10
Kangan Roo Wheelchair – V1
“Proof of Concept” Prototype 2004. Worked better than expected for heavy Lead/acid battery and steel frame – kept secret then shown to Patent Attorney. Provisional Patent eventually formulated from this basis.
© Kangan Batman TAFE 2006. 11
Design Concept
© Kangan Batman TAFE 2006. 12
Kangan Roo Wheelchair – V2
• Second Prototype built 2005.
• With Provisional Patent in place could be developed with students in class.
• Alloy frame, light NiMH battery, still old heavy wheel gearbox and motor but electric shortening.
• Won Judges’ and Viewers’ Choice Episode Award on ABC ‘The New Inventors’ program Feb 2006.
© Kangan Batman TAFE 2006. 13
Protoype Version 2 Video
Play video
© Kangan Batman TAFE 2006. 14
Collaboration
Search for better hub motors led to e-mails and MNDA with CATIA along with other US manufacturers. Video sent of functional chair.
CATIA liked my frame design – collaboration.
Prototype motors delivered needed new axles designed, controller modified, new battery pack and charging circuit. New titanium sports frame.
© Kangan Batman TAFE 2006. 15
New Prototype Version 3 - Short
© Kangan Batman TAFE 2006. 16
New Prototype Version 3 - Long
© Kangan Batman TAFE 2006. 17
PREDICTABILITY - Trial