FastMHz.com - Motor Insanity!!

So what happens when geeks get together, have a few beers, and supply 480v AC to old power tools meant to run on 120v AC?

The first victim is an old vacuum motor from the 80s, the second is an old Sear's rotary tool from the 80s, the third is a Rockwell power drill from the 70s, the fourth is an old Black&Decker jigsaw motor from the same era and last is a modern Bissel upright vacuum motor - the one that sounds like a jet engine.

The contraption on the wood block was a working motor bodged together from leftovers from others. We ran it under water and for some reason it stopped spinning. So we finished it off by blowing the windings out one at a time, and then cooked the field winding with 480v.

Most failed due to brushes falling apart, and so carbon welding rod was used to take the armature to the end manually. At this point, the commutators generally detonate.

Power was supplied from a 5kw inverter on car batteries, run through a large variac, and then fed into a 120v -- 240v or 120v -- 480v step up transformer.

Music: Black Sun Empire - Breach

Category:

Science & Technology

Tags:

• fire
• explosion
• electricity
• motors

[RusPlot]

How many of you have eaten energy?

[piersremus]

oh ohhhh ohhhhh!!! hmm we have to do an autopsy!!!

Great vid, I had as much fun watching it as I can imagine being there. :-)

emm what is the song called that is playing? I really like it !!

the last one sounded like a jet turbine!!! cool!

[anderj101]

"The brush flew out" FTW!