Kio manufactured the connection at an angle so that the wheelchair could be tilted when turned into a tricycle so that allowed the castor wheels to be off the ground to avoid debris.
Did not account for bending of the material
Small rocks did not affect this design due to the fact that the castor wheels would spin once hit. Despite this being a cool discovery, this feature was still affected by large rocks and as a result became a safety hazard for the user.
It was essential to remove the castors completely and design them as their own separate attachment. Therefore, users could not be able to use the third wheel attachment without first taking off the castor wheels.
Connecting the Device
Tubes that slid into larger tubes worked but not user friendly. Tedious to try and fasten bolts every time.
Due to the limited time, we did not get to address the issue of manufacturing the hand rim.
Kio stated that it would be possible and that he would continue to work on it after we left.
Kio designed a braking system that does not interfere with a hand rim if it would be included in the final design.
Materials - Sourcing
Two sources (Professor from Macarere University, and Kio) confirmed that castor wheels could be easily sourced within the country.
We visited the RCAPD school for children with disabilities and saw the different ramps they had made and the size of doors which were large enough to fit the width of the design.