352khz at 4000steps per rev = 5280rpm exactly what i measured. probably even more possible if i ran at 50..60V and with cleaner step pulses. ... https://www.youtube.com/watch?v=T2PtW8T8Ncg

Very slim speakers, very good ones. i figured why they sound a bit weird. The woofer was wired backwards right from the factory. nobody in the last 25 years noticed or fixed that issue. interessting. i fixed it and make a new video someday. plays very well with a subwoofer Recorded with a zoom h2n and a webcam. music tracks were (randomly selected) Aurora - Runaway Aurora - Running with the Wolves Aurora - i went too far The Alan Parsons Project - Sirius Comsmic Gate - Exploration of Space Simon & Garfunkel - Sound of Silence Hans Zimmer - Cornfield Chase The Prodigy - Voodoo People Cypress hill - How could i just kill a man? Pink Floyd - Another brick in the wall pt2 Dire Straits - Ride across the river Soundgarden - Rusty Cage Deadmau5 - Strobe Deadmau5 - Some Chords Camila Cabello - Havana PMJ - Creep Mumford & Sons - Little Lion Man Of monsters and Men - Dirty Paws Tomcraft - Loneliness Arnej - They need us John Metcalfe - Green, Gold ... https://www.youtube.com/watch?v=rlyxvrdWrLY

Spoiler: No explosions, smoke or fire. sorry didnt turned out as expected. The only thing thats better than trowing away, is ripping it apart. Correction: The negative electrode (aluminium) has a graphite coating, the positive one (copper) has lithium iron oxide coating. the sepperation layer is a special polymer electrolyte. maybe the lipo must be charged to catch fire or it just didnt had enough lithium left inside. the cells had a voltage of 2.1V 2V and 0.9V after forgetting them in the drone. ... https://www.youtube.com/watch?v=HO4VVykDZRU

Midnight mix, somewhere? ... https://www.youtube.com/watch?v=Lm0RIUB9LQ8