Dear 100 Hour Board,
I know there is a nomenclature for it, but I can't think of it.
I was watching Damnation Alley, and the truck they were in was called "LandMaster". Its running gear had three wheels set in a triangle, so that two of the wheels were always on the ground. There were eight sets of these tri-wheeled bogies. Can you tell me what this kind of running gear is called? I know it starts with "Tri".
Oh, and thanks for the Apollo 100 answer.
Looks like they are called Tri-Star Wheels. Very interesting. I got to see a guy's demonstration of a Lego version climbing stairs. You really have to see it to understand how it works.