Slight corrections: "Evercel" with one "l" is the company name. Let's try to keep that straight. The Evercel MB80-12-8 weigh 36.4 lb each, which means 95 lb savings over YTs.
-Ed T -----Original Message----- From: Ed Thorpe Sent: Friday, October 04, 2002 7:55 AM To: [EMAIL PROTECTED] Subject: RE: SAFT NiCd's, or Evercell NiZi vs a Sparrow Steve, The Sparrow was designed around 13 YT space. The front/hood has 2 YT low with 1 YT high sharing space with the pot, brake, shunt and heating contactor and 3 YT slightly low at the front with the charger over. The under seat just has enough space for the remaining 7 YT. Usable pack has about 36ah max. If using the new light evercel MB80-12-8 YT-size, then there's enough room for 13 (156v). But you have 178 lbs of ballast lost and no extra space. Usable pack has about 65ah max for same voltage. Maybe some ballast can be added in the front (see next section). If using the lighter TS-LP6163 or TS-LP8581A lithium batteries, in parallel groups, then the space could be packed with equivalent number of "batteries", and a 225 lbs of ballast lost and no extra space. Usable pack has about 80-90ah max for same voltage. By adding 1-1/2" of lead to the 2 YT low space, that would add about 150 lbs of ballast at the lowest location, and in an area where battery height can be adjusted some. So, the argument of just adding more batteries to bring the vehicle weight back up doesn't work for such a custom fit vehicle as the Sparrow. The critical part of the 3-wheeled bird is keeping the weight low and up front, over the two front wheels. The driver adds the weight over the power rear wheel. BR, Ed T -----Original Message----- From: 1sclunn [mailto:[EMAIL PROTECTED]] Sent: Friday, October 04, 2002 10:06 AM To: [EMAIL PROTECTED] Subject: Re: SAFT NiCd's, or Evercell NiZi vs a Sparrow instead of adding dead weight to keep the low cg put more batt in and use a DC/DC converter to match pack voltage with the extras this way keeping motor /controller voltage the same but adding extra ah to your pack . Are you 156v 13x12 How many evercells could you get in that sparrow . EVTV would like video footage of your sparrow and what you are doing and would send you a copy of there latest program. e-mail me for details [EMAIL PROTECTED] ----- Original Message ----- From: "John G. Lussmyer" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Thursday, October 03, 2002 2:05 PM Subject: Re: SAFT NiCd's, or Evercell NiZi vs a Sparrow > At 07:46 PM 10/2/2002 +0200, Tore Lund wrote: > >Li-ion batteries with lead or steel around them will get you the same > >Wh/pound as lead acid, if you aim for the same weight. You would pay $$$ > >for small improvements in range and your acceleration would be as good, or > >bad, as before. > > Actually, it looks like range improvement could be significant. > > >Lowering suspension and using stiffer springs would be much better, if > >possible. > >The most important mass in a small ev is you! so lowering you seat, or > >throw away the seat cushion, to to ride 4 or 5 inches lower will make a > >big difference. > >Not familiar with the Sparrow, I have however tried all three things on > >another smal 3 wheeler: It > > Yup, you aren't familiar with a Sparrow. The seat is a 2" thick pad over > the battery box cover. The suspension is already quite stiff - you feel > every bump on the road. It only has 5" or so of clearance now. (I have > trouble getting my floor jack under the center.) > > > -- > John G. Lussmyer mailto:[EMAIL PROTECTED] > Dragons soar and Tigers prowl while I dream.... http://www.CasaDelGato.com > >
