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The star connection should be delta is interesting, that sounds like it answers the problems I'm having, I will try and look into it further

The sound file is with the blade and installed in its usual location. An electrician replaced the original switch when I moved into the unit as I had to have new wiring anyway The old switch : New switch :

It runs ok without the fan doesn't overheat, it's only with the blade attached that it struggles seems like it's trying to draw too much power and spinning too fast, attached is a sound clip of the noise it makes motor is running at the start, power is cut 8 seconds in and restarted 13 seconds...

Does anyone have any decent recommendations for a repair shop? I obviously am not good at judging after 2 attempts. I need to find somewhere that won't just copy the windings again

The fan blade has been used on the motor since 1978 running 8 hours a day and I have had it balanced also so doubtful that's the issue. I was hoping the first firm may have used a sub standard grade of bearings but it seems like the most likely answer is the windings are incorrect. I have been...

I dont know what current it draws, the motor is too hot to touch and has a burnt winding smell after 30 minutes of running

Here are some pictures of the stator windings from the taken front of the motor

Thank you for the info, it is used as an extractor motor, not sure if the blade attached is original It was rewound and bearings replaced by one firm and since then when the blade is attached it overheats, it was perfectly fine for 40 years but there only answer was the blade is probably too...

I have an old motor that has been rewound incorrectly, I have no information on the motor does anyone recognise the type of motor it could be from the pictures, I have been told it may possibly be an old mod motor off of a ship