Re: [TCML] Proudly presenting My fist coil

[SusaX2 X2 <susax2@xxxxxxxxx>]

Hi Phil, thanks!
each revolution is slightly irregular due to a very worn ball bearing.
Nevertheless is runs in synch, checked it with a strobe light.
To rotate the phase I can turn the disk some on the flange of the motor.

I've spent about 250 Euro on the whole assembly, that's including the
variac and copper wire,
so an array of 942C's is only interesting when given or stolen ;). I know
some people who know some people who might can get a hold on some Maxwell
caps instead.

Mark

2012/5/6 Philip <phil@xxxxxxxxxxx>

> Hello.
> Nice streamers but it didn't seem to have the right sound for a synchronous
> RSG. You tend to get more of a drone normally like this (skip intro)
> http://www.youtube.com/watch?v=rZSiM7VeMjI   If the phase was out it might
> also account for the "not firing on all the electrodes" that you mention,
> as
> the cap is not charged at presentation. What are you using for phase
> control?
> (Nice to see a 'classic' coil being built instead of SS) (Cd 942 caps would
> improve things as well, and the coil seems worth the expense)
>
> Phil
>
> -----Original Message-----
> From: tesla-bounces@xxxxxxxxxx [mailto:tesla-bounces@xxxxxxxxxx] On Behalf
> Of SusaX2 X2
> Sent: 05 May 2012 22:32
> To: Tesla Coil Mailing List
> Subject: [TCML] Proudly presenting My fist coil
>
> Hi to all fellow TC enthusiasts!
>
> Without further ado, I present to you, my first Tesla Coil:
> http://www.youtube.com/watch?v=OJAVul8r7D8
>
> very eager to hear your comments, remarks and or jokes about this one!
> It's a genuine junk box coil, after watching the video, some might say it's
> a coil in a pile of junk. No offence taken.
>
> I'm a dutch mechanical engineer and slightly mad, so I guess I fit just
> about in here.
> I'm aware coiling is potentially very dangerous, I'm also aware coiling is
> very possible.
>
> About the coil:
>
> The control box is plugged in a 3 phase wall socket, each fase is 220V and
> 16A. The power-on button actuates the 3 phase relay for the synchronous
> spark gap induction motor, which is modified to salient pole operation at
> 3000 rpm. It has 1 pair of stationary electrodes and 12 flying brass
> electrodes, but I don't think it fires on all of them.
>
> For the power supply only 1 phase is used by the 6A Philips variac. Then I
> connected an overdimensioned home made line filter,  48 uF PFC and a
> ballast made from a demolished welder. This limits the current to 6,3A, so
> the quad MOT stack doesn't melt my variac.
>
> The capacitor is a SWC with 72 beerbottles, about 45 uF.
> The primary is a copper ribbon pancake, tapped at the 7th turn.
> The secondary is a 125mm PVC pipe with 830 turns of 21 AWG wire.
> The top load is a 350x80mm and a 500x120mm toroid, both styrofoam with alu
> tape and quite smooth. Best performance is with no breakout point.
> RF-ground is a 3 meter steel pipe hammered into my back yard.
>
> With the dual MOT stack, it produced 1 meter long sparks and a distinct
> ozone smell. Now, with the quad MOT stack, sparks measure over 130cm and
> the stench is more than alone ozone. It scrares the hell outta my wife, so
> mission accomplished lol.
>
> Greets from Holland,
>
> Mark
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