X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Sender: To: lml@lancaironline.net Date: Tue, 21 Jun 2005 09:02:18 -0400 Message-ID: X-Original-Return-Path: Received: from imf21aec.mail.bellsouth.net ([205.152.59.69] verified) by logan.com (CommuniGate Pro SMTP 4.3.4) with ESMTP id 1008480 for lml@lancaironline.net; Mon, 20 Jun 2005 23:09:27 -0400 Received-SPF: pass receiver=logan.com; client-ip=205.152.59.69; envelope-from=Lancair1@bellsouth.net Received: from ibm63aec.bellsouth.net ([66.157.195.225]) by imf21aec.mail.bellsouth.net with ESMTP id <20050621030841.BZGQ10642.imf21aec.mail.bellsouth.net@ibm63aec.bellsouth.net> for ; Mon, 20 Jun 2005 23:08:41 -0400 Received: from p4desktop ([66.157.195.225]) by ibm63aec.bellsouth.net with ESMTP id <20050621030841.WYAX25209.ibm63aec.bellsouth.net@p4desktop> for ; Mon, 20 Jun 2005 23:08:41 -0400 From: "Douglas W. Johnson, MD" X-Original-To: "'Lancair Mailing List'" Subject: RE: [LML] tungsten X-Original-Date: Mon, 20 Jun 2005 23:09:34 -0400 X-Original-Message-ID: <000001c5760e$a6b2c2c0$0f01a8c0@p4desktop> MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0001_01C575ED.1FA2A960" X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.2627 Importance: Normal In-Reply-To: X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1506 This is a multi-part message in MIME format. ------=_NextPart_000_0001_01C575ED.1FA2A960 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Specific gravity of tungsten is around 19, as opposed to 10 for lead. Therefore if you replaced an equal volume of lead with tungsten it should weigh about 1.72x the amount you removed. This is rarely achieved in true life, however, especially if you are using tungsten shavings in an epoxy slurry--even with a fairly dense slurry, the multiplier is usually more on the order of 1.5 or so... I ordered mine several years ago from Hi-Temp Specialty Metals in Willingboro, NJ phone 609-877-8200 (Tungsten crushed, #8 mesh, 17lbs for around $100). Doug Johnson " HI guys and gals...got a ? for those who have used tungsten for elevator weight.I am replacing the hinges on my 320 and noticed my elv .is no longer balenced as it was before first flight, counterweight arm is 1/8" high.was thinking of drilling out some lead and replacing with tungsten,how much heavyer is tungsten and were can I buy some. " ------=_NextPart_000_0001_01C575ED.1FA2A960 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Message
Specific gravity of tungsten is around 19, as opposed to 10 for = lead.  Therefore if you replaced an equal volume of lead with = tungsten it=20 should weigh about 1.72x the amount you removed.  This is rarely = achieved=20 in true life, however, especially if you are using tungsten shavings in = an epoxy=20 slurry--even with a fairly dense slurry, the multiplier is usually more = on the=20 order of 1.5 or so...
 
I=20 ordered mine several years ago from Hi-Temp Specialty Metals in = Willingboro, NJ=20 phone 609-877-8200 (Tungsten crushed, #8 mesh, 17lbs for around=20 $100).
 
Doug=20 Johnson
 
 " HI guys and gals...got a ? = for those=20 who have used tungsten for elevator weight.I am replacing the hinges on = my 320=20 and noticed my elv .is no longer balenced as it was before first flight, = counterweight arm is 1/8" high.was thinking of drilling out some lead = and=20 replacing with tungsten,how much heavyer is tungsten and were can I buy=20 some. " 
 
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