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Re: RSG's different shape electrodes
to: Bart
The main point here is that running higher pps rates usually place undue
loads on the NST that might lead to their premature death. 200 pps
certainly is not that high, but the new coil builder might go higher to
perhaps 500-600 pps with a variable speed RSG and the NST's won't tolerate
such a heavy duty cycle. The 120 pps rate gives excellent performance, max
cap current right at the top of each charge cycle, and is generally
foolproof for most new builders. Also, the slightly longer streamers
around 200-300 pps are less bright than the 120 pps which deliver all the
caps energy at just the right time. It is a very stable, balanced system,
quite symmetrical, and seems to work very well without a lot of adjustment.
We have used these synchros on NST powered systems that have been in use
over 15 years and the same NST is still running it. One should also note
we only use brand new NST's so we don't have a unit half on its way out
before it fails on a system.
DR.RESONANCE-at-next-wave-dot-net
----------
> From: Tesla List <tesla-at-pupman-dot-com>
> To: tesla-at-pupman-dot-com
> Subject: Re: RSG's different shape electrodes
> Date: Sunday, September 27, 1998 7:01 AM
>
> Original Poster: "Barton B. Anderson" <mopar-at-uswest-dot-net>
>
> D.C.,
> I agree, the 3/16 inch TIG welding electrodes are
> excellent for off the shelf electrodes. But regarding
> the 1800rpm-4 electrodes: You state it is a great
> performer for "small" systems, but does it really beat a
> variable RSG? It's been posted recently that 200+ BPS
> provides optimum performance. With the 1800 rpm-4
> electrode, your only at 120 BPS. I have been using a
> synchro 1800 rpm-4 electrode RSG, but I think my system
> wants more breaks/second. Of course there's only one way
> to find out. So I'm in process of building a variable dc
> RSG. I plan to try it with my old coil (12.5"x34.2") and
> my new coil I'm currently preparing (finally built
> myself a coil winding machine which can handle variable
> sized tubing from 3" to 24"). Anyway, is there a reason
> you are pro-synchro 1800rpm-4 electrode RSG?,(as you've
> posted several times). I guess I'm wondering what
> secrets lerk out there about dc drives which I should
> avoid in my build.
> Bart
>
> Tesla List wrote:
> >
> > Original Poster: "D.C. Cox" <DR.RESONANCE-at-next-wave-dot-net>
> >
> > to: Erik
> >
> > You can't beat a synchro 1800 RPM rotary for great performance with a
small
> > system. 3/16 TIG welding electrodes work just fine. 4 electrodes on a
1/4
> > inch dia type CE phenolic disk.
> >
> > DR.RESONANCE-at-next-wave-dot-net
>