Help With Battle Robot

[ptbecker2]

My friend and I recently got into robotics and have both built successful RC cars. We made a bet against each other on who could build a RC car that could beat the others in a battle. We have 1 month. Any suggestions on what sort of weapon to use? I was thinking it would be pretty easy to hook a saw blade up to a servo but I've never done it so I don't know if that would be the best idea. Any tips or suggestions you have would be great!

[VegaObscura]

Servos are typically high-torque and low-RPM.  You'll have a very hard time getting a servo to spin a saw blade fast enough to damage anything.  Depending on your budget, you might want to purchase a battery-powered Dremel and take it apart to use as your weapon.