Hey again everyone, I need you guys' help and recommendations.

I'm thinking of designing a new featherweight and want it to be a ground up rebuild of my current basic 4WD wedge/rammer Tankslapper. However because the first version was just a Scot Bots kit, and the second version used the exact same internals as the first transplanted into it, I don't have any knowledge of how to actually make a robot WORK.

Still wanting to keep it simple, the new version would be another 4WD rammer but with the wedge on an axle this time (like a baby Original Sin) so I don't throw myself in at the deep end. What motors, speed controllers, batteries, etc would you recommend for a strong and speedy robot like that?

Also, what is the reprogramming/hacking that you need to do with speed controllers? That's something I definitely have no knowledge of but feel I should probably learn sooner than later if I want to be a builder.

Thanks in advance.
Cam.