Re: Variable capacitor for tinkering with

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

Original poster: "Gregory Hunter by way of Terry Fritz <twftesla-at-qwest-dot-net>" <ghunter31014-at-yahoo-dot-com>

I think it is a neat idea--brilliant in it's
simplicity. BTW, where did this notion come from that
beer bottles get hot and crack in Tesla coil service?
I've been running a bank of them for months at pole
pig power levels (up to 7200VA), and I've never
cracked one. I've never noticed one warm above room
temperature even on extended runs. Obviously, all
glass is not alike (I assume there are many different
recipes for glass), and Miller Geniune Draft bottles
seem indestructable. If your beer bottle caps get hot
or crack, you're using the wrong kind of bottle.

Greg

http://hot-streamer-dot-com/greg

--- Tesla list <tesla-at-pupman-dot-com> wrote:
> Original poster: "Sundog by way of Terry Fritz
> <twftesla-at-qwest-dot-net>" <sundog-at-timeship-dot-net>
> 
> Hi All!
>  
>    It's been a hectic week for me (the attacks shut
> down all flights, and the
> business I work for relies heavily on FedEx to fly
> our packages everywhere, so
> we had a ton of irate customers), plus that bit of
> really nasty weather that
> rolled through earlier this week.  
>  
>  I had an idea for a cheap, easy to make variable
> cap, but dismissed it as "Too
> cheezy."  The idea kept rolling around in my head,
> and I finally gave in to it
> and told my buddy Dave about it.  He really liked
> it, so I guess I'll give it a
> whirl.
>  
>   I'm needing a variable cap for my VTTC.  I like
> the idea of a pre-made unit,
> but I'm usually pretty limited on spendable funds. 
> My idea is to make a good
> 'ole SW bucket cap with a dozen beer bottles (in
> good supply here), and put
> them in a basket in the 5 gal bucket.  To chance the
> capacitance, simply lift
> the basket to raise the caps further out of the SW
> in the bucket.  Of course
> using fishing line of something else non-conductive,
> so I can change it as it's
> running.  
>   
>    I figured that I'd bust a few bottles, they'd get
> hot, be lossy, and so on,
> but here's why I like the idea. 
>   #1.  Cheap!   I have lots on hand.
>  #2.   Easy to repair.  Bottle pops, oopsie, drop in
> a new one.  
>  #3.  No PVC container full of HV oil to house a
> normal variable cap leaking
> all over, and HV oil has *always* leaked out of my
> PVC containers.
>   #4. It's just so rediculous it has to work! :))
>  
>   I'll do some measurements later on today and post
> my results, time
> providing.  My VTTC is in shambles at the moment, so
> I probably won't be able
> to give it a go on the coil.  Sure, this is no real
> replacement for a quality
> component, but at least the only thing I'll have to
> buy is a new 5 gal bucket
> ($2-3 at Home depot).  The rest (bottles, salt, etc)
> I have on hand.  High
> tech, no.  Lossy? yes. Silly-looking, you betcha! 
> But it should work, and let
> me play more with my VTTC when I get it back up &
> running! :)
>     
>                                                     
>                       
>                         Caio!
>                                                     
>                       
>     Shad 
>  Comments?
> 
> 
> 


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