Re: [TCML] Q,,question

[drieben@xxxxxxxxxxx (David Rieben)]

Hi Chris, Gary,

I'm going to have to respectfully disagree with you here, Chris. If 
you were to split a length of copper tubing length-wise, then you
would effective double the surface area, since the previously
unexposed inside of the tubing will now be exposed. However,
as Gary has stated, you would also add other losses that would 
more than negate whatever gains that you obtained by doubling the 
primary coil's effective surface area. And I would hate to even think 
about TRYING to NEATLY slit a 50 ft. section of copper tubing 
into a nice smooth ribbon ;^(/ I'm with Gary, I would prefer copper
tubing/pipe to copper ribon anyway as I find it much easier to work.

David Rieben

-------------- Original message -------------- 
From: "Chris Swinson" <list@xxxxxxxxxxxxxxxxxxxxxxxxx> 

> 
> ----- Original Message ----- 
> From: 
> To: "Tesla Coil Mailing List" 
> Sent: Wednesday, December 05, 2007 6:29 AM 
> Subject: Re: [TCML] Q,,question 
> 
> 
> Sirs, 
> Would it be better to split a roll of 7/8" copper coil, and roll it 
> flat? 
> Seems more area would mean more "skin depth area"??? 
> Regards 
> j. 
> . 
> 
> The surface area will still be the same. 
> 
> Chris 
> 
> 
> 
> 
> _______________________________________________ 
> Tesla mailing list 
> Tesla@xxxxxxxxxxxxxx 
> http://www.pupman.com/mailman/listinfo/tesla 

You may realize some gain with the larger surface area, but I would expect 
losses to increase even more because of eddy current losses.  You would also 
increase losses due to corona off of the sharper edges.

And more significantly, how on earth would you do that, and not have it look 
like a mess?  You can find copper ribbon on eBay, but even so, I would choose 
tubing over ribbon.

Regards, Gary Lau
MA, USA
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