Re: synchronous gap help (fwd)

["Tesla list" <tesla@xxxxxxxxxx>]

---------- Forwarded message ----------
Date: Wed, 11 Jul 2007 14:05:28 -0500
From: D.C. Cox <resonance@xxxxxxxxxxxx>
To: Tesla list <tesla@xxxxxxxxxx>
Subject: Re: synchronous gap help (fwd)




Use 2.6 x matching impedance value for synchro sparkgaps.

Resonance Research Corp.
www.resonanceresearch.com


----- Original Message ----- 
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Tuesday, July 10, 2007 5:23 PM
Subject: RE: synchronous gap help (fwd)


>
> ---------- Forwarded message ----------
> Date: Tue, 10 Jul 2007 14:32:46 -0700 (GMT-07:00)
> From: penny831@xxxxxxxxxxxxx
> To: Tesla list <tesla@xxxxxxxxxx>
> Subject: RE: synchronous gap help (fwd)
>
> I've already built the propellor gap using the .125 and the entire device
> is housed in a cabinet with an blower to keep it cooled. I'll run it and
> see how it does because as you said, the 1/4" is really expensive.
> Adapting to the larger rods would be simple, just a few minutes on the
> drill press! Does anyone have the Geek Group capacitor chart that includes
> the cap value using the SRSG? I have the one for the static gaps but it
> doesn't include anything for the SRSG. As always, thanks again.
>
> Tony
>
> -----Original Message-----
>>From: Tesla list <tesla@xxxxxxxxxx>
>>Sent: Jul 10, 2007 1:02 PM
>>To: tesla@xxxxxxxxxx
>>Subject: RE: synchronous gap help (fwd)
>>
>>
>>---------- Forwarded message ----------
>>Date: Tue, 10 Jul 2007 15:49:45 -0400
>>From: "Lau, Gary" <Gary.Lau@xxxxxx>
>>To: Tesla list <tesla@xxxxxxxxxx>
>>Subject: RE: synchronous gap help (fwd)
>>
>>Red-hot with just a 15/120 NST?  With my 15/60 NST and 5/32" tungsten
>>rod, I can touch any part of the propeller-gap electrodes immediately
>>following a 1-3 minute run.  The stationary electrodes do tend to get
>>hotter due to less airflow, but definitely not approaching
>>incandescence.
>>
>>I don't mean to nit-pick, but 1/4" rod is a bit pricey and unnecessary,
>>IMO.
>>
>>Regards, Gary Lau
>>MA, USA
>>
>>> Date: Tue, 10 Jul 2007 14:04:49 -0500
>>> From: resonance <resonance@xxxxxxxxxxxx>
>>> To: Tesla list <tesla@xxxxxxxxxx>
>>> Subject: Re: synchronous gap help (fwd)
>>>
>>>
>>>
>>> At this power level I would suggest 1/4 inch dia. electrodes.  1/8th
>>inch
>>> may overheat to redhot on the electrode tips and cause poor quenching.
>>>
>>> Resonance Research Corp.
>>> www.resonanceresearch.com
>>>
>>>
>>> ----- Original Message -----
>>> From: "Tesla list" <tesla@xxxxxxxxxx>
>>> To: <tesla@xxxxxxxxxx>
>>> Sent: Tuesday, July 10, 2007 11:07 AM
>>> Subject: RE: synchronous gap help (fwd)
>>>
>>>
>>> >
>>> > ---------- Forwarded message ----------
>>> > Date: Tue, 10 Jul 2007 08:11:56 -0700 (GMT-07:00)
>>> > From: penny831@xxxxxxxxxxxxx
>>> > To: Tesla list <tesla@xxxxxxxxxx>
>>> > Subject: RE: synchronous gap help (fwd)
>>> >
>>> > I have a related question on the propellor gap. I'm planning on
>>pushing
>>> > 15/120 through an .125 thoriated tungsten electrode. Is that to much
>>power
>>> > for such a small electrode? Your thoughts would be appreciated.
>>> >
>>> > -----Original Message-----
>>> >>From: Tesla list <tesla@xxxxxxxxxx>
>>> >>Sent: Jul 10, 2007 7:27 AM
>>> >>To: tesla@xxxxxxxxxx
>>> >>Subject: RE: synchronous gap help (fwd)
>>> >>
>>> >>
>>> >>---------- Forwarded message ----------
>>> >>Date: Tue, 10 Jul 2007 08:55:27 -0400
>>> >>From: "Lau, Gary" <Gary.Lau@xxxxxx>
>>> >>To: Tesla list <tesla@xxxxxxxxxx>
>>> >>Subject: RE: synchronous gap help (fwd)
>>> >>
>>> >>I think you're going to run into a problem using your relatively
>>small
>>> >>teletype motor to spin-up such a heavy 3/8" thick disk.  I was
>>barely
>>> >>able to get such a motor to spin a 09" thick x 6.12" diameter G10
>>disk
>>> >>with just 4 brass acorn nuts electrodes, and it utterly failed to
>>sync
>>> >>with anything larger.  I'd strongly recommend using a propeller gap
>>if
>>> >>using a Teletype motor.  My SRSG page:
>>> >>http://www.laushaus.com/tesla/sync_gap.htm, and Terry Blake's:
>>> >>http://tb3.com/tesla/sparkgaps/index.html
>>> >>
>>> >>Regards, Gary Lau
>>> >>MA, USA
>>> >>
>>> >>> ---------- Forwarded message ----------
>>> >>> Date: Mon, 09 Jul 2007 23:59:58 +0000
>>> >>> From: ameen_ghavam@xxxxxxxxxxx
>>> >>> To: Tesla list <tesla@xxxxxxxxxx>
>>> >>> Subject: synchronous gap help
>>> >>>
>>> >>>         I'm building a 240 bps srg for my tesla coil and was
>>wondering
>>> >>if
>>> >>> anyone would give me any tips or suggestions. I'm planning to use
>>a
>>> >>3/8 "
>>> >>> g10 rotor 8" in diameter with 4 1/4 " tungsten electodes held on
>>with
>>> >>> shaft collars (the disc is pinched between the collars). A sheet
>>metal
>>> >>> ring connects these electrodes. I have two stationary electrodes
>>(one
>>> >>> gap). My motor is a Teletype 1/12 hp motor, synchronous, and runs
>>at
>>> >>3600
>>> >>> rpm. Any tips on how to balance, cut the g10 (i've heard its hard
>>to
>>> >>cut),
>>> >>> motor arbor, or anything else I should know? Also, please email me
>>off
>>> >>the
>>> >>> list. Thanks.
>>> >>>
>>> >>Cheers,
>>> >>>
>>> >>> Ameen Ghavam
>>> >>>
>>> >>
>>> >>
>>> >>
>>> >
>>> >
>>> >
>>> >
>>>
>>>
>>>
>>
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