...just because we have been talking about adders-subtractors and for those who doesn't use to read Klocki (if any... ), here we have today the video from a fabulous diwheel presented there by Sariel and from his own design.
Which could be better, than author's own words to describe is model.
Diwheel is basically a type of bike with two wheels parallel to each other, and the actual bike residing inside the wheels, kept in place by its low placed center of gravity. If you’re interested, you will find plenty of informations on diwheels and monowheels here.
As for the model itself, it’s key feature is an advanced drivetrain. I’ve used a subtractor, that is a mechanism able to add or subtract the speeds of two motors and distribute it independently to two wheels. Thanks to that, the diwheel is able to quickly drive straight and still make precise turns, which would be otherwise impossible with the wheels so close to each other.
The subtractor functionality can be better understood from the explanations on the video shown above. Also you can find more pictures from this diwheel model, at Sariel's BS folder.
Love, those trans-blue lights...