Also, in the near future we're looking to sell complete kits of the same variety that you have, so keep an eye out for those! (in the meantime, I've added the motor info I posted here to the kit page)

You're hitting the nail on the head there! They are indeed N20 6V motors, and are of the 800RPM variety. Speaking personally, I've used 1000RPM motors with ~1.8-2cm diameter wheels, and 600RPM motors with larger wheels; 800RPM seems to be about the sweet spot, at least until you want to go faster!

We're glad to see you up and running with your RoboPad! Between you, @dreamsvoid.com and a few others we'll have almost enough to have a mini tournament next year!

We're looking forward to seeing what you create!