Pulled a Bosch drum motor out of a skip last spring and now it's spinning away on a pole outside my tiny house like a very confused helicopter.
The rewinding is the faff nobody warns you about — took me three attempts and one mildly singed eyebrow to get the star configuration right, but once it clicked the thing was actually chucking out a respectable voltage in a decent breeze.
Few things worth knowing if you're going down this rabbit hole:
- Rectifier quality matters — I bodged the first one with cheap diodes and lost half my output to heat
- Blade balance is everything — vibration will walk your tower bolts loose faster than you'd think
- Pair it with a Victron SmartShunt and you'll actually see how disappointing British weather is in real time
- Fogstar cells as the battery bank made the whole thing feel slightly less agricultural
The main gotcha is cogging — these motors weren't designed to self-start in low wind, so you'll want to either rewind with fewer poles or just accept that anything under Force 4 is purely decorative.
Anyone else found a particular washing machine brand that rewound better than others? I've heard Indesit motors are more cooperative but can't confirm — mine was a mystery skip special with no badge and a suspicious smell of fabric softener.