I’ve chosen a few of my technical projects to give a flavour of my interests and past experience.
These range from one-off modifications of adaptive equipment through to development of prototype and commercial products. My interests are focused on developing adaptive equipment to access the outdoors.
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- Concept for Batec handlebar modification (Solidworks)
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- Side view of the handlebar setup. The user’s hands are fixed comfortably to the handlebar grips using Active Hands gripping aids.
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- Wide handgrip position provides good leverage for steering as well as providing ample clearance across the users legs when turning tightly.
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- The original plate frame all-terrain wheelchair created in Autodesk Inventor (Mr Davies)
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- The first prototype electrically powered all-terrain wheelchair with aluminium folded/welded box frame.
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- The first physical prototype of an electrically powered all-terrain wheelchair.
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- Barn-find County Full Track Crawler circa 1959
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- Initial full-scale model of the County Crawler created in SolidWorks.
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- Original County Crawler Reference material, which luckily contains key dimensions and component exploded drawings.
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- The Lockdown Roller ramp is designed to work with simple bicycle training rollers which are readily available from stores such as Amazon.
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- This Lockdown Roller Ramp is made from 5 mm hardwood ply (plywood between 5-6 mm is perfect), and is secured using standard wood glue.
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- Lockdown Roller enables pushing exercise indoors. Resistance can be increased or decreased by changing the air pressure in the wheelchair tires.
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- Three of the rollers feet fit into locating holes in the base with an extra stiffening layer laid on top.
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- Original concept in SolidWorks
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- Concept drawing in SolidWorks
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- Concept drawing with the handlebars folded forward for easy access
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- The superb recumbent delta trike from Hase. Featuring a unique and novel independent trailing arm rear suspension.
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- Foldable frame for easy transport and storage at home
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- Hand cycle already manufactured by Hase incorporating similar chassis frame.
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- Lots of space to do a simple sliding transfer
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- The basic second-hand trike chassis features the “Compact Twist Fold” mechanism allowing the rear frame section to fold over the front section.
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- First assembly of the chassis, seat and front wheels. As you can see the seat frame at this point is unmodified.
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- An extension to the seat base was welded into place, giving an improved sitting position and support for a pressure relief cushion.
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- Trialling a J2 pressure relief cushion
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- Control concept based on the Batec Modified Handlebars (see my other projects). Providing power, braking and steering for riders with no hand function and very limited arm strength.
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- Heinzmann geared hub motor fitted together with control electronics and pannier battery. Weight distribution gives great traction on the rear tire.
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- Active Hands gripping aids ensure safe and comfortable hand position.
