More to come.......
The purpose is to find a polyurethane (PU) 6" wheel capable to offer a ride comfort similar to pneumatic tires but with the PU roll capabilities.
http://www.micro-mobility.com/ Speed+ Soft hub wheel concept. Good idea. It works. Only problem is that it should be designed on purpose to suit properly the Mini125RD application. Unfortunately it can not be proposed commercially.
http://www.skywaywheels.com wheel concept. Maybe the perfect wheel. Durometer is 65A. Rebound is around 70%. It can compete with pneumatic wheels for ride comfort.
http://www.froglegsinc.com/lexsr.html wheel concept.
I am still testing this wheel. It seems to be designed on purpose for the Mini125RD.
All these wheels from:
http://www.wheelchairparts.net/CATALOG_c316765.html
and here
http://www.sportaid.com/casters/
Those are the trolley bus rails that i have to cross in the downtown city area.
Notice that chain guard experiment.