Let's Make Robots!

Ball bearing motor

(Update II: New video, we managed to make it run on a standard racing pack 7.2V (no clue to how many amps - but not enough to kill a large elephant, only enough to melt wires slowly))

(Update: A SlowMo edit of the video, especially for "mogul" - that's lack of intelligence for you, frame by frame :D)


Original post:


A ball bearing motor needs a lot of amps.

We knew that.

We estimated that this one would do well with 10-15 amps.. But the LiPo battery I had around was a 6600 40C (Estimated 264 amps in the burst).. which turned steel into flying plasma.. a little faster than expected.

Note how close I am to severe burns - the table, floor etc got badly burnt - sometimes I am just lucky :)

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fritsl's picture

Huh? Firewall of China again? it works from here - any one else having problems?

fritsl's picture

Oh, sorry Markus, _that_link, not the other one - fixed now, thanks :)

kariloy's picture

I would advise using protection goggles whenever potential hazardous spinning objects are involved. :-)

But then again I see you like very much so being on the edge of danger... it's just that eyeballs are so soft and fragile

lumi's picture

Wow, you were lucky not to get burned:-) 

But yeah, that's the spirit, try everything to find out where the boundaries are ;-)