Re: [TCML] sucker gap material

[Sfxneon@xxxxxxx]

Stainless steel conducts heat very poorly, which will probably cause the  
gap to overheat. 
 
Tony Greer
___________

In a message dated 3/16/2010 8:35:28 P.M. Central  Daylight Time, 
Gary.Lau@xxxxxx writes:
I would choose brass fittings over SS  for a variety of reasons.

The cost of two brass fittings can't be that  great compared the rest of 
your coil, even if SS is free.  Machining SS is  a lot tougher than brass.  I 
think I recall hearing that if SS is heated,  it may emit toxic fumes, but 
can't confirm this.

As to the opening, I  think you're referring to the axial hole in the 
fittings.  The thing that  matters is the air velocity through the arc channel.  
I don't think the  axial hole diameter will affect this too much, as long as 
it's not too  small.  Mine was roughly 3/8" diameter; I wouldn't go  
smaller.

Regards, Gary Lau
MA, USA


> -----Original  Message-----
> From: tesla-bounces@xxxxxxxxxx  [mailto:tesla-bounces@xxxxxxxxxx] On
> Behalf Of Dan Casaregola
>  Sent: Tuesday, March 16, 2010 7:48 PM
> To: Tesla Coil Mailing  List
> Subject: [TCML] sucker gap material
> 
> I'm building a  sucker gap, and was wondering whether stainless steel 
would be
>  acceptable as gap material as opposed to copper or some other metal.  I  
have a
> neighbor who tells me not to buy any type of fittings since he  has 
plenty (all
> stainless steel).  Second question; what size  opening is appropriate in 
the gap?
> Larger opening allows greater flow of  air, therefore better cooling?  Or 
smaller
> opening causing  increased pressure of air stream?  Thanks  Dan
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