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Monday, November 11, 2013

A wheel made for walking

Roadless wheel can make life easier for those who have to carry heavy loads for distances

MASTERS student at the Royal College of Art and Imperial College in London, Ackeem Ngwenya has reinvented the wheel by doing away with the road.
The MA + MSc student calls it the “Roadless wheel” and while the 25-year-old Malawian designed it for rural people in his home country who transport heavy loads on their heads, his Roadless wheel can make life easier for communities all over the world who have to carry heavy loads from distant bus stops to their homes on footpaths, especially rural communities in KwaZulu-Natal.
Writing on blackmanfromthesky, the dreadlocked Ngwenya says he grew up in a remote village in Malawi with no roads to speak of.
“It was not unusual for people to head-load in excess of 25 kg for more than 10 km, this is the load and journey my cousins and I took to mill corn when I was about 11,” says Ngwenya.
He says a society without transport cannot progress.
“More than 80% of Malawians live in rural areas and rely on subsistence farming, and about 66% of them are cut off from their country’s designated road networks, therefore inhibiting market participation and resulting in an extreme bottleneck for economic growth and prosperity.
“And so I thought I could try to develop a means of transportation that doesn’t require road infrastructure,” Ngwenya says,
While designing his Roadless wheel with the roads and income levels of subsistence farmers in the Nkhata-bay district of Northern Malawi in mind, he stresses that he is not trying to replace the car or normal pneumatic wheels.
“This should not be understood as meaning to leapfrog or bypass all means of transport available in the region. People have access to transport if and when they need to travel long distances and if they have enough money for high fares and are willing to walk long distances to access them. What they do not have and which is often overlooked are intermediate means of transport [IMTs], i.e. moving produce from their respective villages to a point where they would be able to get on locally available transport.

“The absences of IMTs in the villages has meant that people necessarily rely on walking, shoulder- and head-loading as means to carry goods within and between villages, fields, homes and market centres,” says Ngwenya.

How it works

THE Roadless wheel system can be adapted to suit any road condition. Instead of the fixed footprint of a pneumatic tyre, the wheel has a network of rods attached to an axle that can adjust like a scissor jack. The Roadless wheel is not designed to handle high speed stresses, but built to carry heavy loads lightly over any terrain at walking speed.
In mud, the axle is expanded to create a high, thin tyre that can cut through the sludge. In thick sand, the axle is tightened to expand the rods to create a fat, low tyre that can spread the load’s pressure.

Long road ahead in terms of development

AT the time of print, Ackeem Ngwenya was still raising money on crowd funding to take his Roadless wheel from a graduating project to production.
He told Witness Wheels apart from financial contributions, he has received lots of encouragement and some people were interested in funding the future development of the project.
“The focus for now is for me to develop a working prototype within the financial reach of the target market so that I can pass my exam,” Ngwenya said in an e-mail. More information on blackmanfromthesky.wordpress.com