Rotating Blades

[maddox10]

As Danny B writes. The less teeth, the better. Easiest to make and balance is a 2 teeth spinning bar or disk.


The "striking power" of a spinning weapon is a combination of stored energy and the means to deliver as much of it in a blow.

Doubling the mass doubles the stored energy. Doubling the speed quadruples the stored energy.

To get the energy in the moving mass, the motor and battery must be able to input the power into the moving mass.

I made a series of robots with a spinning weapon, all using the same motor and pulley arrangement.
Valkiri 2, 3 and 3.5. each of 'm with a smaller disk.
Valkiri 2 started with a HUGE 395mm Single disk, weight of moving mass 4 kg.


Disadvantages:
The 8 mm thin disk needed replacement after each event.
Startup was slow and erratic.

An alternative was tried.

Disadvantage. The upside down driveability nor selfright worked. This trident went to Caliope.


Valkiri 3 , what participated at the UK champs 2015.
Disk shrunk to 356mm diameter, spinning mass still 4 kg.


This weapon is so powerfull (theoretical 7.9Kj), it outclasses series 5 heavy spinners like the one on Hypnodisk. But the weaponpower, lay out and weight distribution made it manoeuvre like a drunken whale.

Therefore, a version with a smaller disk is build. Currently named Valkiri3.5.
2.9kg spinning mass, disk diameter 280mm.


In the same periode, I did build DX11 together with Frank, a starting Dutch roboteer.
2 kg spinning mass, 2 teeth spinning bar.