<DIV> Jeff E Pattern is still a tough proposition. It'll be cool when the technology and the costs make it mainstream. Until then I'm buying a new YS DZ 160 and keeping my fingers crossed that it doesn't blow up! Mike<BR><BR><B><I>Jeff Hughes <jeffghughes@comcast.net></I></B> wrote:
<BLOCKQUOTE class=replbq style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #1010ff 2px solid">Ouch. I was hoping it to be closer than that. I keep reading about these <BR>large scale electric planes being flown with 28 Nicads or nimh, they must <BR>not have the performance we need?<BR><BR><BR><BR>----- Original Message ----- <BR>From: "Jerry Budd" <JBUDD@QNET.COM><BR>To: <DISCUSSION@NSRCA.ORG><BR>Sent: Friday, October 15, 2004 11:07 PM<BR>Subject: Re: Questions<BR><BR><BR>> HI Adam,<BR>><BR>> The ThunderPower 10s3p LiPo's Frack & I use (Jason too) are actually <BR>> 42volts, 6ahr = 252 Whr<BR>><BR>> so that actually works out to ~66 cells and 5 lbs difference in weight to <BR>> use Nimh. Not a realistic scenario.<BR>><BR>> Thx, Jerry<BR>><BR>>>lipo 10s3p - 33volts, 5ahr = 165Whr<BR>>>Nimh gp3300 - 1.15volts/cell, 3.3ahr = 3.8Whr/cell works out to 43cells to <BR>>>store the same energy.<BR>>>^All rough average quick
numbers, of course.<BR>>><BR>>>Thunder Power lipo costs $680 and weighs 1.1kg.<BR>>>Epic GP3300 costs - around $220 and weighs 2.7kg.<BR>>>That is a weight difference of about 3.5lbs.<BR>>><BR>>>And that is ignoring the problem of parralleling NiMH batteries (as I <BR>>>understand it, this isn't supposed to be done), and how much extra energy <BR>>>would be required to carry those 3.5lbs, and the decreased voltage caused <BR>>>by cold GP3300s. I think the GP2200's have a higher energy density, so <BR>>>they might make the numbers a little better, but the point remains.<BR>>>=====================================<BR>>># To be removed from this list, go to http://www.nsrca.org/discussionA.htm<BR>>>and follow the instructions.<BR>><BR>><BR>> -- <BR>> ___________<BR>> Jerry Budd<BR>> mailto:jbudd@qnet.com<BR>> =====================================<BR>> # To be removed from this list, go
to http://www.nsrca.org/discussionA.htm<BR>> and follow the instructions.<BR>> <BR><BR>=====================================<BR># To be removed from this list, go to http://www.nsrca.org/discussionA.htm<BR>and follow the instructions.<BR><BR></BLOCKQUOTE></DIV><p>
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