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Re: RSG problems, help please?
to: Martin
You are now "overquenching" your spark. You are shutting off the power
before it can all transfer to the secondary inductor. Try running this type
of gap with only 2 or 3 sections in series and it should perform normally.
Also, try running around 300-400 bps. 800 bps is much too high value for a
standard classic TC (only works good at high bps with a magnifier/resonator
design).
Regards,
Dr.Resonance-at-next-wave-dot-net
-----Original Message-----
From: Tesla List <tesla-at-pupman-dot-com>
To: tesla-at-pupman-dot-com <tesla-at-pupman-dot-com>
Date: Monday, February 15, 1999 6:11 PM
Subject: RSG problems, help please?
>Original Poster: "Dale, Martin" <martin.dale-at-ntu.ac.uk>
>
>Hello all on list.
>
>Can anyone help me find out why my new RSG won't work very well?
>
>It is an 8 gap serial compound with 8 rotating electrodes passing through
an
>insulated 6 1/2" disk, and 4 stationary electrodes on each side.
>
>All the electrodes are 1/8" Zirconiated Tungsten rods, and the gaps are
>currently set at 8 to 10 mil (thou' in UK) which is as close as I can get
>them without the risk of collision.
>
>Motor speed max. is 6000 RPM so a max break rate of 800 BPS.
>
>All 8 gaps are connected in series with heavy copper bussing between the
>3/8" brass bolts that hold the electrodes.
>
>The problem is that I am getting very poor performance from the coil with
>the RSG in place of my TCBOR/RQ serial pipe gap.
>With the RQ gap I normally get 50" or more white hot sparks, but the best
>the RSG will do is 12" thin wimpish purple ones (very disappointing!) and
>the sparks at the gaps are also a blue/purple color and not too bright.
>
>The coil is a conventional 2 coil inverse cone primary 1/4" copper tube and
>approx. 5" diam sec. 800t 21gauge. toroid= 2 stacked up to 6" by 25"
>f res= 220 KHz Pri. cap= 16nf poly/foil rolled cap. Supply= up to 16 KV
at
>250mA from radar transformers.
>Ballast= gapped variac and resistors (approx. 3ohms)
>
>I've done all the obvious checks on tuning etc, but to no avail.
>The feeble coil output suggests I've got some huge losses somewhere.
>
>Anyone got any ideas what might be wrong!
>It's taken me nearly 4 months to build this thing!
>
> Thanks Martin Dale TCBON Nottingham UK
>
>