We all know the famous hypno disk from robot wars, well, here's his illegitimate son.
Just a couple of servos some old lego knex wheels, and foamed PVC bits I had around, the disk is a computer CD, and the motor is from an old CD player.
New disk:
https://www.youtube.com/watch?v=2UoLl6jRhr0
nice robot, make the disk
nice robot, make the disk from steel and it will cut legs of it’s opponents 
And you have cool k’nex wheels, I use those too sometimes
Control method? Ripped RC?
Control method? Ripped RC? Some might have an interest in doing this, very quick (apparetnly) way of makiing develpoment / testing bot before adding AI.
And how do you spin that CD drive?
Lots of goodies hidden in this little killa!
Nice job !! 
If you cut
Nice job !! ;)
If you cut the cd just right the teeth will hit the target every time.
Yep, a proportional
Yep, a proportional remote(kyosho perfex) each channel controls each servo in both directions, and speed control It’s a relatively cheap remote, range is HUGE but only two channels, for robotics 3 or more is better.
The CD drive is really old, so the motor is brushed, all it takes is wiring it to the battery, and already has a thing with springs to “grab” the CD:
I have finally found something to do with unused CDs better than throwing them at buildings…
that’s what they are…
I found them outside, grabbed them right away, knew they where good, they have holes in them, perfect for some screws to attach the servo horn
Thanks 
Yeah, cut them a
Thanks
Yeah, cut them a bit more and now it’s better, also bought the speed down a notch.
