By Geoff Adams-Spink
Age & disability correspondent, BBC News website
A designer who has spent most of his career working on parts for Formula One cars has come up with a new, off-road wheelchair.
The Trekinetic K2 dispenses with the old tubular chassis and uses a carbon fibre monocoque instead.
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The K2 has three wheels - two large ones at the front that can take mountain bike tyres - and a smaller one at the back.
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The wheels have an easily adjustable camber so that the chair can have a slimmer profile for going through doorways and a wider - and more stable - 24 degree camber for outdoor activities.
The wheel tilt can be easily altered by rotating a cross shaft underneath the seat: at its slimmest, the K2 is 710mm wide and when fully adjusted it broadens out to 870mm.
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more:
http://news.bbc.co.uk/2/hi/technology/5063672.stmI always wondered when someone was going to try the 3-wheeled design. Bucky Fuller fans know this is the way to build cars, too.
on edit: The rest of the article is interesting, but I squeezed most of the technical details into the post. (Nice of them to incude dimensions!)