Questions

[George Kennie]

Prius batteries are warranted for 9 years!

Jeff Hughes wrote:

>   Mike,I did talk with Jim and have a canopy coming. Thanks for
> the info on that. And it does look like my temptation will have my
> tried and true OS1.40 in it. Electrics will have to come a long
> way before it's competitive for guys like me. I only went through
> a case and a half of fuel this year (9 gallons X $11 = $99). Those
> batteries would have to last me 7 years for the financials to work
> out. I wonder how long the batteries will last in the Toyota
> Prius? That'll be a shock for people when they have to start
> replacing 150 lbs worth of Nimh's.Jeff
>
>      ----- Original Message -----
>      From: mike mueller
>      To: discussion at nsrca.org
>      Sent: Saturday, October 16, 2004 8:16 AM
>      Subject: Re: Questions
>        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
>
>      Jeff Hughes <jeffghughes at comcast.net> wrote:
>
>           Ouch. I was hoping it to be closer than that.
>           I keep reading about these
>           large scale electric planes being flown with
>           28 Nicads or nimh, they must
>           not have the performance we need?
>
>
>
>           ----- Original Message -----
>           From: "Jerry Budd"
>           To:
>           Sent: Friday, October 15, 2004 11:07 PM
>           Subject: Re: Questions
>
>
>           > HI Adam,
>           >
>           > The ThunderPower 10s3p LiPo's Frack & I use
>           (Jason too) are actually
>           > 42volts, 6ahr = 252 Whr
>           >
>           > so that actually works out to ~66 cells and
>           5 lbs difference in weight to
>           > use Nimh. Not a realistic scenario.
>           >
>           > Thx, Jerry
>           >
>           >>lipo 10s3p - 33volts, 5ahr = 165Whr
>           >>Nimh gp3300 - 1.15volts/cell, 3.3ahr =
>           3.8Whr/cell works out to 43cells to
>           >>store the same energy.
>           >>^All rough average quick numbers, of course.
>
>           >>
>           >>Thunder Power lipo costs $680 and weighs
>           1.1kg.
>           >>Epic GP3300 costs - around $220 and weighs
>           2.7kg.
>           >>That is a weight difference of about 3.5lbs.
>
>           >>
>           >>And that is ignoring the problem of
>           parralleling NiMH batteries (as I
>           >>understand it, this isn't supposed to be
>           done), and how much extra energy
>           >>would be required to carry those 3.5lbs, and
>           the decreased voltage caused
>           >>by cold GP3300s. I think the GP2200's have a
>           higher energy density, so
>           >>they might make the numbers a little better,
>           but the point remains.
>           >>=====================================
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>           >>and follow the instructions.
>           >
>           >
>           > --
>           > ___________
>           > Jerry Budd
>           > mailto:jbudd at qnet.com
>           > =====================================
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>           http://www.nsrca.org/discussionA.htm
>           > and follow the instructions.
>           >
>
>           =====================================
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