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 1063233 for flyrotary@lancaironline.net; Sun, 09 Apr 2006 14:28:50 -0400 Received-SPF: none receiver=logan.com; client-ip=207.189.223.49; envelope-from=billdube@killacycle.com Received: (qmail 7355 invoked by uid 513); 9 Apr 2006 18:27:15 -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 0.125526 secs); 09 Apr 2006 18:27:15 -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 18:27:14 -0000 Message-Id: <7.0.1.0.0.20060409111719.038e6a98@killacycle.com> X-Mailer: QUALCOMM Windows Eudora Version 7.0.1.0 Date: Sun, 09 Apr 2006 11:23:20 -0600 To: "Rotary motors in aircraft" From: "BillDube@killacycle.com" Subject: Re: [FlyRotary] Re: State-of-the-art airplane battery In-Reply-To: References: Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed At 08:59 AM 4/9/2006, you wrote: >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. Bolder TMF is what I used to have in the bike. Not really suitable for a primary aircraft battery. They don't last very long. They don't have many amp-hrs per pound. They don't hold a charge on the shelf for very long. Bolder TMF could be great for aircraft starting if used in combination with a less powerful, but higher capacity battery. This is possible, and could be superior, but could get complicated as you would need to have to manage the charge between the two batteries in an intelligent way. Bolder TMF is perfect for a jump start. You can buy these units. They weigh just 3 pounds. http://www.gpbatteries.com.hk/html/techinfo/emergency.asp Bill Dube'