Re: [TCML] Phase tuning gadgets and when to set the gap to discharge.

[futuret@xxxxxxx]

Yes, keep the start (run) capacitor in addition to the phase
shift capacitor and variac.? Are you sure it's a start cap?? I think
it's a run cap that's used with that type of motor.? In either case
keep it in the circuit.? BTW, the phase shifter circuit only gives
90 degrees of electrical phase shift.? So you may need to
adjust (rotate)?the rotor position on the motor shaft to get the sync
in range.? You'll know soon enough if this is the case if
you find that the sparks will be best at?either end of the variac's
range.? You want best sparks somewhere within the variac's
range (not at the end).? If you get longest sparks at the end
of the range, then you can't be sure you're really getting
longest possible sparks.? 

Cheers,
John


-----Original Message-----
From: Jeremy Scott <supertux1@xxxxxxxxx>
To: Tesla Coil Mailing List <tesla@xxxxxxxxxx>
Sent: Thu, 3 Jul 2008 9:34 am
Subject: Re: [TCML] Phase tuning gadgets and when to set the gap to discharge.



The motor I have works pretty good and doesn't slip, it's 
a simple propeller gap swinging a 1/4"x7" long rod of 
tungsten between four electrodes on the corners of a square.
Standard 120 bps system.

Under my timing light the electrodes appear stationary and
don't appear to rotate so I know it's in sync. They're just
not stationary at the right position. :)

The motor has a start capacitor, is that still required with
the phase shift circuit, in addition to the capacitor paired
with the variac?


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