I've also found that there is a fine line between too little and too much. I found I was on the too little side (help me on that) of that pendelum, (locking, but barely) and found that streamlining the contacts (in one case removing every other contact being I had 8 in that case) reduced the load on the motor allowing it to lock more easily.
Terry
From: BrianB <brianb@xxxxxxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Sent: Sunday, February 25, 2018 10:41 AM
Subject: Re: [TCML] Best Spark Gap for NSTs?
Sounds like you need to remove a bit more material "IF" you started off with a large enough motor.
> On Feb 24, 2018, at 9:26 PM, Daniel Kunkel <dankunkel@xxxxxxxxx> wrote:
>
> I modified a 1725 rpm motor to run in salient pole operation years ago. It
> will seek and then lock into phase and then break out again. I think I
> recall reading that if you don't remove enough rotor material it will seek.
> If you remove too much it will over heat.
>
> So before to I take this back to machining, is it even worth it? What is
> the best gap for NSTs? Is SRSG is the answer what is the preferred break
> rate?
>
> ~Dan
> To synch or not to synch
> Kansas City area
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