Re: [TCML] How To Turn A Vacuum Cleaner Motor Into A Synchronous Motor

["Teslalabor" <teslalabor@xxxxxxxxxxx>]

Hi deano,

the sound didn't change very much of course it now sounds like 3000 1/min 
instead of 11500 1/min and there is the typical sound like a modified asynch 
motor with flats on its armature when locking in sync.

Stefan

----- Original Message ----- 
From: "David Dean" <deano@xxxxxxxxxxxxxxxx>
To: "Tesla Coil Mailing List" <tesla@xxxxxxxxxx>
Sent: Friday, December 17, 2010 2:06 AM
Subject: Re: [TCML] How To Turn A Vacuum Cleaner Motor Into A Synchronous 
Motor


> Well, judging by the sound of it, that is one unhappy motor.
> Did the motor make any such noise before the modification?
>
> later
> deano
>
> > Hello,
> >
> > today I modified a 400W universal motor from a washing machine. I used 2
> > diodes each 1kV/6A. I did a scope test which shows that the motor runs
> > perfectly sync:
> >
> > http://www.youtube.com/watch?v=yOlfzxzucy8
> >
> > But there are 2 problems: The motor is not self-starting AND the motor
> > sometimes runs in "crazy mode", as I call this strange behaviour.
> > "normal-mode" and "crazy-mode" - both can be seen in the video.
> >
> > Best Regards
> > Stefan
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