YorkNott Robotics: Shuriken (FW spinner)

[overkill]

I worked out the kinetic energy using the Cosmos on-line calculator. From my own horizontal spinner experience, you will probably see up to 15% speed loss from air resistance, friction, voltage sag, etc. With the 1.5:1 reduction, that makes the worst-case speed 3,606 RPM:



5.3KJ will cause extreme damage and if you got the efficiency up to 95%, it would be 6.65KJ

[Danny B]

I worked out the kinetic energy using the Cosmos on-line calculator. From my own horizontal spinner experience, you will probably see up to 15% speed loss from air resistance, friction, voltage sag, etc. With the 1.5:1 reduction, that makes the worst-case speed 3,606 RPM:

5.3KJ will cause extreme damage and if you got the efficiency up to 95%, it would be 6.65KJ

Thanks for the info, that's a really handy tool you've found there. Now I'm much more confident about the effectiveness of this setup!