X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from nm9.bullet.mail.bf1.yahoo.com ([98.139.212.168] verified) by logan.com (CommuniGate Pro SMTP 5.4.4) with SMTP id 5481682 for flyrotary@lancaironline.net; Sat, 14 Apr 2012 20:11:19 -0400 Received-SPF: none receiver=logan.com; client-ip=98.139.212.168; envelope-from=echristley@att.net Received: from [98.139.214.32] by nm9.bullet.mail.bf1.yahoo.com with NNFMP; 15 Apr 2012 00:10:45 -0000 Received: from [68.142.200.226] by tm15.bullet.mail.bf1.yahoo.com with NNFMP; 15 Apr 2012 00:10:45 -0000 Received: from [66.94.237.104] by t7.bullet.mud.yahoo.com with NNFMP; 15 Apr 2012 00:10:45 -0000 Received: from [127.0.0.1] by omp1009.access.mail.mud.yahoo.com with NNFMP; 15 Apr 2012 00:10:45 -0000 X-Yahoo-Newman-Id: 774164.38680.bm@omp1009.access.mail.mud.yahoo.com Received: (qmail 74371 invoked from network); 15 Apr 2012 00:10:45 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=att.net; s=s1024; t=1334448645; bh=COs8e3hX0phwmJVI2sFifax26VNsb7M0oSA4yfBUc5s=; h=X-Yahoo-Newman-Property:X-YMail-OSG:X-Yahoo-SMTP:Received:Message-ID:Date:From:Reply-To:User-Agent:MIME-Version:To:Subject:References:In-Reply-To:Content-Type; b=oraT5UfsW1B4HiBCsaEz7VthsDbSZYlBlnVeZvgUfc3ERg/4gGEgW+Gfpeu+mdc9sCcUch2q6ginhSY56VcNk+U/G7qaAvRJLfXIr3fokm7UbTvfavljnAAG0sHSBGUJaai4YlRygCeb3U10VTD/820O9mxTZidAuSr30AHWl4k= X-Yahoo-Newman-Property: ymail-3 X-YMail-OSG: n1AIf2sVM1lacTyX4x5Rtq4BEONPF4NQyrctsochIO9uUWW v3pHFc5JtSmSQdyFRNsX6IAD5jXHnz8JPZpapSOA1Vtqc9J6RiYViX5Lto6g yTRdJVxTHgbWZh6dIA4YT6KHtiF0PIpl0G5YcC__UDsGftp0mtFm2gsaQZJZ EDWhz52eDLProkJWuGUk1oeAEI6qtbShwpkPs6YeDbfur1KKs_1ZhB1oA0FD CrKbP_dH__qbR5jkEcrllGPi7MEXgGsKonjl2KW4IqeXAwytf0r2SfVfOgqO MG6iCGhhNWIbgDskadGIyAIAQtgCm4IeQuuOwA_jrbvPqTEK8F21u4psH502 ddAMNPt9oCe_7u3S18DFuox2pktV5OHotZCKAfZFTrEJXdvFyjqltwGxQiKC w X-Yahoo-SMTP: 40RP3pGswBDvPav1a.I8eMv.KS8bdgWBnCloVoKaow-- Received: from [192.168.1.2] (echristley@65.190.51.71 with plain) by smtp103.sbc.mail.mud.yahoo.com with SMTP; 14 Apr 2012 17:10:45 -0700 PDT Message-ID: <4F8A1204.3030506@att.net> Date: Sat, 14 Apr 2012 20:10:44 -0400 From: Ernest Christley Reply-To: echristley@att.net User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.23) Gecko/20110921 Lightning/1.0b2 Thunderbird/3.1.15 MIME-Version: 1.0 To: Rotary motors in aircraft Subject: Re: [FlyRotary] Re: Laser Ignition, was: [FlyRotary] Re: The 16X is A L I V E... References: In-Reply-To: Content-Type: multipart/alternative; boundary="------------060002050108030507050607" This is a multi-part message in MIME format. --------------060002050108030507050607 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit On 04/14/2012 07:38 PM, CozyGirrrl@aol.com wrote: > Last time I looked Peltier coolers were only good for a delta of 40*f > one way or the other, can't stack and cascade them because for the hot > on one side you have cool on the other. > You definitely wouldn't try to cool them. You'd design them to operate at 220 or something, an then heat them just like you do with oxygen sensors. --------------060002050108030507050607 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit On 04/14/2012 07:38 PM, CozyGirrrl@aol.com wrote:

Last time I looked Peltier coolers were only good for a delta of 40*f one way or the other, can't stack and cascade them because for the hot on one side you have cool on the other.

You definitely wouldn't try to cool them. You'd design them to operate at 220 or something, an then heat them just like you do with oxygen sensors.
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