Return-Path: Received: (qmail 6884 invoked from network); 23 Dec 2003 20:52:06 -0000 Received: from unknown (HELO ptb-mxscan02.plus.net) (212.159.14.236) by ptb-mailstore01.plus.net with SMTP; 23 Dec 2003 20:52:06 -0000 Content-Transfer-Encoding: 8bit Received: (qmail 54443 invoked from network); 23 Dec 2003 20:52:06 -0000 X-Filtered-by: Plusnet (hmail v1.01) X-Priority: 3 X-MSMail-Priority: Normal X-Spam-detection-level: 11 Received: from ptb-mxcore02.plus.net (212.159.14.216) by ptb-mxscan02.plus.net with SMTP; 23 Dec 2003 20:52:05 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore02.plus.net with esmtp (Exim) id 1AYtVd-000E2x-7R for dave@picks.force9.co.uk; Tue, 23 Dec 2003 20:52:05 +0000 X-Fake-Domain: majordom Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1AYtVJ-0002Ff-J3 for rs_out@blacksheep.org; Tue, 23 Dec 2003 20:51:45 +0000 Received: from [64.164.98.52] (helo=mtaw4.prodigy.net) by post.thorcom.com with esmtp (Exim 4.14) id 1AYtVD-0002FW-Op for rsgb_lf_group@blacksheep.org; Tue, 23 Dec 2003 20:51:39 +0000 Received: from willow.nutstreet.net (adsl-68-91-12-43.dsl.tulsok.swbell.net [68.91.12.43]) by mtaw4.prodigy.net (8.12.10/8.12.10) with ESMTP id hBNKpWkK022778 for ; Tue, 23 Dec 2003 12:51:38 -0800 (PST) Received: from willow.nutstreet.net (localhost [127.0.0.1]) by willow.nutstreet.net (8.12.8/8.12.8) with ESMTP id hBNKpVHd005525 for ; Tue, 23 Dec 2003 14:51:31 -0600 Received: from localhost (eric@localhost) by willow.nutstreet.net (8.12.8/8.12.8/Submit) with ESMTP id hBNKpVsA005521 for ; Tue, 23 Dec 2003 14:51:31 -0600 Date: Tue, 23 Dec 2003 14:51:31 -0600 (CST) From: "Eric KD5UWL" To: rsgb_lf_group@blacksheep.org In-reply-to: <000101c3c994$9e8895c0$6507a8c0@Main> Message-ID: MIME-Version: 1.0 Subject: Re: LF: Re: insulators Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on post.thorcom.com X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 X-SA-Exim-Scanned: Yes Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-PN-SPAMFiltered: yes X-Spam-Rating: 1 Thanks, Alan, I found some mica sheets today, about 10cm square and 7mm thick. I may cut some of these to near-toothbrush :) size and see how they work out unless you guys have previous experience with mica and know it to be a poor choice. Otherwise, I'll let you know how it works out. I will employ the corona rings. Thank you very much for your suggestions. 73 Eric > Hi Eric I am not sure about dacron.....but it might not be the conduction > through the water laden "rope" it might be that you have a corona problem. > At that power level its like playing a small flame on the support structure, > then once there is a bit of carbonisation its all "downhill". Do you have > circular "corona rings" at every wire end and sharp bend?? I think this will > help a lot. The guys here have used all sorts of plastic off-cuts for > insulators....down to old tooth brush handles (!!) at 600W or so. Any > plastic can carbonise but its a lot lighter than pyrex or ceramic