Typical standard manual wheelchairs have large rear wheels with an extended rim called the hand-rims allowing the user to self-propel. However, it is difficult to push on unpaved roads or grassy fields.
MIT R&D and their students started the initial concept for the GRIT Freedom chair in 2008. They have tested their designs in toughest conditions in East Africa, rural Nepal, and Haiti. GRIT Freedom chair, all-terrain wheelchair have made possible for wheelchair users to go off road like a mountain bike allowing to use on grass, sand, and rough terrain.
GRIT wheelchair (All-terrain wheelchair) uses lever drives which make it easier to push the chair forward than standard wheelchairs and stop without grabbing slippery hand-rims. The following are the pictures of a standard wheelchair and the GRIT Freedom chair. This picture of this GRIT Freedom chair shows two hand levers but these are detachable depending upon the environment and the type of roads you travel. It is portable and can be fit in the trunk. The heaviest part to lift into a car weighs 25 pounds. In addition, the GRIT Freedom Chair uses an off-the-shelf bike drive so most local bike shops can repair.
Standard vs. Grit Freedom chair – the all-terrain wheelchair
Wheelchair Hiking with the GRIT Freedom Chair – “Lichen It” Trail
YouTube (posted by goGRIT – September 2017)
Everyday Adventure with the GRIT Freedom Chair
YouTube (published by goGRIT – August 2017)
More videos from Freedom chair users
You can find more about GRIT Freedom chair (all-terrain wheelchair) product information at this link. https://www.gogrit.us.