So that's the scoop. If you're interested in doing special problems, submit a proposal to this group so we as a group can tear it apart and rebuild it into something wonderful. RO Hi, I'll put you on the list. However, I'm not sure I see the relation between traction and area. Larger area means less force per unit area.
Friction is proportional to force per unit area.
I do understand that two wheels tend to induce more frictional drag more than one, but even there, I'm not sure of the physics. I may end up making sub groups by discipline, by the way if that's a collectively good idea. RO Hi Jude, Sorry, but I won't be in tomorrow. As for communications, it's really very simple. The trick is knowing what is really important.