Running vacuum cleaner motors on a variable 0-500V power supply.
Do not attempt to replicate this experiment, a series wound motor without a load can reach insane speeds and potentially send metal flying!
00:00 Intro
00:06 Electrolux 1850W with impeller
01:16 Electrolux 1850W without impeller
02:28 Suzhou Innovac 1200W without impeller
03:33 Electrolux Z358 900W w/ vacuum gauge
04:48 Noname 1200W without impeller