Technical design is really bad. The armature shaft is not suspended on ball bearings and therefore does not rotate easily. The shaft is only 2mm in diameter so I had to put a bushing on it to allow the 4mm pulley to fit snug enough to be securely attached to the shaft. Due to the lack of bearings, a lot of external power had to be applied to the shaft to get it to spin at a high enough speed to light a low wattage (0.1W) 12V lightbulb. This generator was used in a freshman science project on how to use wind to generate electricity. I had to use a hand drill to spin the windmill shaft fast enough to generate enough power to light a small 12 volt indicator light. I wish I could find a generator that uses bearings even if it costs more. hard lesson.
5Pcs 19Mm 12V 24V Waterproof Latching Push Button Switch With Wiring Harness And LED Indicator Light, Pre-Wired SPDT Self-Locking 4 Pin Marine Metal Switch For Boats Cars Trucks (Blue)
22 Review
π NuTone 5901A000 Blower Wheel Assembly: Superior Efficiency and Performance
9 Review
MIDI keyboard Axelvox KEY49j white
22 Review
TWTADE/AC 24V 10A Coil Electromagnetic Power Relay 8 Pins 2DPT 2NO+2NC With Indicator Light And Socket Base -YJ2N-LY
9 Review