When you have tracks...
https://youtu.be/E-HbZsWFibo

hotrod180 wrote:http://i621.photobucket.com/albums/tt296/Hal_B/DSC00170-1.jpg
Reminded me of Whittaker tandem gear, shown here mounted on a Bird Dog.
180Marty wrote:What is a Tweel?
Michelin Americas Research Company in Greenville, SC come up with the technology that made this non-pneumatic airless radial tire that brings together the wheel assembly and tire together into one solid unit. A Tweel is made of a rigid hub that is connected to a shear beam with flexible, deformable polyurethane spokes. This essentially allows the entire wheel to function as one single unit instead of like a traditional air filled tire mounted onto a rim. The Tweel tires cannot go flat since they are airless which makes them ideal commercial purposes such as construction, landscaping, contracting, agricultural and recycling yard industries.
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