Reuleaux Rollers

A demonstration inspired by this paragraph in the Wikipedia article on the Reuleaux triangle:
"A Reuleaux triangle (along with all other curves of constant width) can roll but makes a poor wheel because it does not roll about a fixed center of rotation. An object on top of rollers with cross-sections that were Reuleaux triangles would roll smoothly and flatly, but an axle attached to Reuleaux triangle wheels would bounce up and down three times per revolution. This concept was used in a science fiction short story by Poul Anderson titled "The Three-Cornered Wheel."[6]"
I find it amazing that rollers with a cross-sectional that is almost triangular can transport a load just like cylindrical rollers.
Watch the video and be amazed: http://youtu.be/2CSpXSGFaes
Make in Diamond Age PLA on an Ultimaker 1.