X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from email6.peakpeak.com ([207.189.223.49] verified) by logan.com (CommuniGate Pro SMTP 5.0.9) with ESMTPS id 1062858 for flyrotary@lancaironline.net; Sat, 08 Apr 2006 23:50:01 -0400 Received-SPF: none receiver=logan.com; client-ip=207.189.223.49; envelope-from=billdube@killacycle.com Received: (qmail 2226 invoked by uid 513); 9 Apr 2006 03:48:22 -0000 Received: from 71.212.196.104 by email6 (envelope-from , uid 504) with qmail-scanner-1.23 ( Clear:RC:0(71.212.196.104):. Processed in 0.179634 secs); 09 Apr 2006 03:48:22 -0000 Received: from 71-212-196-104.hlrn.qwest.net (HELO tigger.killacycle.com) (external_relay_billdube@[71.212.196.104]) (envelope-sender ) by email6.peakpeak.com (qmail-ldap-1.03) with SMTP for ; 9 Apr 2006 03:48:22 -0000 Message-Id: <7.0.1.0.0.20060408214232.035b38b0@killacycle.com> X-Mailer: QUALCOMM Windows Eudora Version 7.0.1.0 Date: Sat, 08 Apr 2006 21:47:21 -0600 To: "Rotary motors in aircraft" From: "BillDube@killacycle.com" Subject: State-of-the-art airplane battery In-Reply-To: References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed I know this is a bit off topic, but we rotor heads like to try the latest and greatest stuff. I am considering producing state-of-the art, very lightweight, ultra long life, starting batteries for experimental aircraft. They won't be cheap to make, however. I'd like to get some feedback as to the market for these before I put a big effort into this. Here are the specs: 14 volts 480 cranking amps 8.8 amp-hours 2.7 pounds (Yes, that is right.) 10 year warrantee (prorated) Completely sealed battery Safer than lead acid or NiCad Built-in electronic monitoring system warns of over-voltage, under-voltage, over heating, or internal battery fault. That is all the good news. The downside is that they will cost about $475. I'm not sure how many folks would want a 10 year battery (at least) that weighs about 1/3 as much as an "ordinary" battery, but costs four times as much. The specs above are real. I have personally tested these batteries and they do, indeed, perform this well, so that is not an issue. I know I can make these. I'm going to make one for myself. The question is, will folks buy them if I produce them? Let me know if you think you would be interested in such a high-tech battery at this cost. Bill Dube'