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Forum Index : Windmills : F&P 42 pole 0.8mm copper from 9Kg Washing Machine - 25 cm diameter

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Technophiliac

Regular Member

Joined: 18/12/2020
Location: New Zealand
Posts: 92

Posted: 09:54pm 18 Dec 2020

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Hi Back Shed Gurus
I took out the motor from our expiring F&P 9 Kg washer as he bearings were starting to squeal (many moons ago) in the expectation some new bearings would enable a generator. The rotor diameter is 25 cm. Does anyone know if these are bigger and what difference it makes over the 6.5Kg motor units? Can anyone tell me their rotor diameter? I note it appears to have 3 Hall effect sensors mounted as well. I guess they could indicate rpm, but the the frequency of the AC produced presumably could be used to calculate the same?
Many thanks
PS Great site people.

Davo, Wellington. You can have it perfect, on time, and at the best price. Choose any two.

Warpspeed
Guru

Joined: 09/08/2007
Location: Australia
Posts: 4406

Posted: 05:01am 19 Dec 2020

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Hi Techophillac, welcome to the Forum.

I am not an F&P guy so cannot answer your size question.

The three Hall sensors tell the microprocessor where the rotor is.
Its kind of like the distributor on your car engine, telling the ignition where the piston is, and when to fire the spark plugs.

Information from the three Hall sensors controls the power switched to the coils, so as the rotor turns, current to the three phases is switched at the exact right time to get the motor motoring.....

Cheers, �Tony.

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