Sunday, November 14, 2010

Where to get an inexpencive brushless DC motor? Your local junk yard! I bought this slightly used alternator from a local recking yard for 20 €, thats about 30 $. Rip out the bridge rectifier and voltage regulator, solder on some longer wires to the stator coils and to the brushess. Okay so it's not brushless yet, but it's super cheap and has tons of power! This 55 A charger has performed well as a motor and has a maximum constant power over 600 W! The peak power has been 1 KW! Thats the easy part, now just make a BLDC motorcontroller :P. Or buy one. I wan't cheap so i made one. Still not done as you can tell in the video... about 4 months it's been to get this far.. anyway enjoy the video. Oh ya the little white box with red numbers shows the motors RPM when i hold the Hall effect sensor connect to it near a neodymium magnet spinning with the axel.



http://www.youtube.com/watch?v=Tu-ia7GylO0&hl=en

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