Formula for Rewinding Motor without Nameplate

[rumahhutan]

Hi everyone, I'm facing challenge at my work.
Can someone suggest me the fastest way to calculate a coil amount for rewinding motor but the condition is there's no nameplate, so we just know the diameter and phase angle of the motor. Or can you give me a reference recomendation about this?

Thanks

 

[waross]

Count the turns of the old winding.