Re: Garolite (G9, G10, G11) questions.

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "by way of Terry Fritz <twftesla-at-qwest-dot-net>" <FutureT-at-aol-dot-com>

In a message dated 6/9/02 1:41:55 PM Eastern Daylight Time, tesla-at-pupman-dot-com
writes:

Ed, all,

One of my early coils used a rotary made from a large aluminum
disc 13" in diameter, it had a thick steel shaft with bearings at
each end.  I mounted the whole thing into a wooden frame, and
drove it with a rubber belt attached to a 1/2HP washing machine
motor.  I drilled 8 holes into the edge of the
aluminum disc, and installed steel screws which served as
spinning electrodes.  It worked very well, but was somewhat
noisey.  This aluminun disc assemby came from a
"Compugraphic" machine which was used to make printed
labels.  I once saw another of these monsters in a scrapyard.

Richard Hull used an aluminum disc which he cut notches
out of to make it resemble a sort of saw-blade, and he used
that for his Nemesis rotary, with belt-drive.  The coil gave
15 foot sparks.

Cheers,
John


>
> There's been a lot of talk here about materials for RSG rotors, but not
> much about use of metal other than saw blades.  In the "good old spark
> days" a lot of transmitters gaps used metal rotors, often but not always
> of cast zink with the studs or blades cast in.  The hub was insulated
> with an insert.  I think the same thing would work today.  Make a hub
> out of almost any rigid insulating material (even wood) and use it to
> insulate a rotating aluminum plate with the electrodes mounted in it. 
> Also good for heat dissipation.
>
> Just a thought, don't intend to build one myself.
>
> Ed
>
>