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I was also thinking about this as well. What have the list members used in the past to tap a ribbon primary? I was planning on rolling it with polyethylene foam strip as Terry Blake did with his huge coil described on in his web site. http://www.tb3.com/tesla/hugecoil/primary/primary.html I am wondering what he used for this. There doesn't seem to be any room for a movable tap. Thanks, JP > From: pip@xxxxxxxxxxx > To: tesla@xxxxxxxxxx > Date: Fri, 19 Dec 2014 11:47:28 +0000 > Subject: Re: [TCML] Ribbon Primary - What size? > > Don't forget to account for the space that the clamp will take up between > turns. > Clamping for the primary tap needs a bit of thought on high power systems, > especially for flat ribbon systems where the tendency is to fix the turns > just wide enough apart to prevent flashover. > > Phil > > -----Original Message----- > From: Tesla [mailto:tesla-bounces@xxxxxxxxxx] On Behalf Of John Paul Grippa > Sent: 18 December 2014 17:30 > To: tesla@xxxxxxxxxx > Subject: [TCML] Ribbon Primary - What size? > > Hello All, > It has been a while since I have posted, but do read all of the emails on a > regular basis. I am in the process of source materials for my first BIG > Coil and plan on using a ribbon primary. Does anyone know how to calculate > what thickness and height the copper stip would need to be when building a > primary of this type? As you know, the price of copper stip goes up > drastically when you move from say 10 mil to 20 mil or from 1" to 2'' in > height. I was hoping to use the cheapest 100' stip that would sustain the > current. I have seen many setups that were using stips of 2" or 3" in > height and 30 mil thickness. Is this really necessary? Currently, I have a > 10 kVA piggie (courtesy of the amazing John Freau) just waiting to be put > into action. I am not sure if I will be using all 10 kVA, but would rather > build a primary that can sustain the power I have available in case I decide > to do so. Thanks for all of your help! > Best Regards,JP > _______________________________________________ > Tesla mailing list > Tesla@xxxxxxxxxx > http://www.pupman.com/mailman/listinfo/tesla > > _______________________________________________ > Tesla mailing list > Tesla@xxxxxxxxxx > http://www.pupman.com/mailman/listinfo/tesla _______________________________________________ Tesla mailing list Tesla@xxxxxxxxxx http://www.pupman.com/mailman/listinfo/tesla