Volume 53 Number 6, 2016
Pages 893 — 900
Abstract — This study proposes a way to reduce energy losses from rolling resistance friction during manual wheelchair propulsion by increasing the size of the front caster wheels and adjusting the weight distribution. Drag tests were conducted using a treadmill and a force transducer. Three different caster diameters (4 in., 5 in., and 6 in.) and six different mass distribution combinations (based on percentage of total weight on the caster wheels) were studied. A two-way analysis of variance test was performed to compare caster size and weight distribution contribution with drag force of an ultralight wheelchair. The 4 in. caster contributed significantly more drag, but only when weight was 40% or greater over the casters. Weight distribution contributed more to drag regardless of the casters used.
Key words: caster wheel, drag force, drag test, efficiency, friction, rolling resistance, treadmill, weight distribution, wheelchair, wheel diameter.
Go to TOP
Last Reviewed or Updated Wednesday, February 22, 2017 10:55 AM