X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from S3.cableone.net ([24.116.0.229] verified) by logan.com (CommuniGate Pro SMTP 5.0.9) with ESMTP id 1063130 for flyrotary@lancaironline.net; Sun, 09 Apr 2006 10:59:51 -0400 Received-SPF: pass receiver=logan.com; client-ip=24.116.0.229; envelope-from=crayd@cableone.net Received: from chuckathlon (unverified [69.92.218.28]) by S3.cableone.net (CableOne SMTP Service S3) with ESMTP id 53469095 for ; Sun, 09 Apr 2006 08:40:57 -0700 Return-Path: From: "Chuck Dunlap" To: "'Rotary motors in aircraft'" Subject: RE: [FlyRotary] State-of-the-art airplane battery Date: Sun, 9 Apr 2006 07:59:05 -0700 Message-ID: <007001c65be6$258a63b0$6501a8c0@chuckathlon> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook, Build 10.0.3416 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2727.1300 In-Reply-To: Importance: Normal X-IP-stats: Incoming Last 16, First 38, in=8, out=0, spam=0 X-External-IP: 69.92.218.28 X-Abuse-Info: Send abuse complaints to abuse@cableone.net Is this the Bolder Battery thin film technology? I had one of those in a portable jump-starter, it was very light but it did not last very long. I was thinking of using the Bolder battery for a back-up in my RV6. Could be very exciting technology if it will hold up. It will be great for electric car drag racing. Chuck Dunlap I know this is a bit off topic, but we rotor heads like to try the=20 latest and greatest stuff. I am considering producing state-of-the art, very lightweight, ultra=20 long life, starting batteries for experimental aircraft. They won't=20 be cheap to make, however. I'd like to get some feedback as to the=20 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,=20 under-voltage, over heating, or internal battery fault. That is all the good news. The downside is that they will cost about=20 $475. I'm not sure how many folks would want a 10 year battery (at=20 least) that weighs about 1/3 as much as an "ordinary" battery, but=20 costs four times as much. The specs above are real. I have personally tested these batteries=20 and they do, indeed, perform this well, so that is not an issue. I=20 know I can make these. I'm going to make one for myself. The question=20 is, will folks buy them if I produce them? Let me know if you think you would be interested in such a high-tech=20 battery at this cost. Bill Dube' =09 =09 -- Homepage: http://www.flyrotary.com/ Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/