[EricH]

This is a rather involved set of questions this time. I'll do my best, but you're starting to get into details here.

Originally Posted by SciBorg Dave

OK I want to order some metals.
What size, What number(6061 -6063), How long ?

The number is the alloy. There will often also be some form of hardness number following the alloy. 6061 is adequate for FRC applications, as is 6063. There are other alloys with different properties. Going into what all the alloys and their numbers mean... well, that's a materials course and a mechanics of materials course.

Length: Just get the "stock" size if it's anywhere longer than 3-4'. Often, metal is sold in 10' lengths; getting a few of those will help you later.

As far as size... It really, really depends on the application. 2"x1"x1/8" isn't uncommon for drivebases; 1"x1"x1/8" or 1/16" isn't uncommon in the superstructure. If you're going with a kit drivebase, which includes its metal, then I'd get 1"x1"x1/8" in both square tube and angle shapes.

Do we do a 2nd robot?

If you have the resources, yes. If you don't have the resources, don't. In this case, I'd suggest not until after you've built your primary robot, and put all your effort towards getting a running robot ASAP and getting some practice on that, on carpet.

You got the team going what else will we need ?

Mentors, a mentor team, some luck... Oh, and grab some parental involvement if you can.