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  1. mace1934

    A123 26650 M1B Cell 2.5 AH - new?!

    Sounds great. I hope they will be available with tabs - I don't do welding. Mace
  2. mace1934

    Elephant in the room - Quadcopters...

    "if you could fly an autonomous vehicle to the store to pickup a loaf of bread for you, instead of a car, it might be in the spirit of ES" Amen.
  3. mace1934

    Big Dummy, Xlite 5304 front, 16S 20Ah Thundersky

    Updated data file: https://spreadsheets.google.com/ccc?key=0AtP_9hkP9H1DdEVQUGVjajlYVXctWmJYLWRVMnNTMUE&hl=en&authkey=CMXE0IgI Larry
  4. mace1934

    Big Dummy, Xlite 5304 front, 16S 20Ah Thundersky

    Big Dummy with Xlite 5304 front, 36-72 V 48 amp controller, 16S1P 20Ah Thundersky (eLite) Li-ion battery Limited by age and asthma, but wanting to continue biking (including shopping), I've been experimenting with electrics for the past few years. This is a report on my Big Dummy. It can be a...
  5. mace1934

    Longterm lithium prices in $/Wh

    In coming years the limited amount of easily mined lithium may become a deterrent to EV development, if lithium batteries remain crucial. Though there is a vast reservoir in seawater, they say extracting lithium from the seas is prohibitively expensive. A better alternative may be geothermal...
  6. mace1934

    This Week in Batteries blog by Venkat Srinivasan

    From earth2tech, http://earth2tech.com/ : "Pull The Plug!: A new blog called This Week In Batteries, run by Venkat Srinivasan, a researcher at Lawrence Berkeley National Lab’s Batteries for Advanced Transportation Technologies (BATT) recently launched and is providing fascinating...
  7. mace1934

    Lead Acid + UltraCap = Perfection?

    Read these, wept. In search of Lithium: The battle for the 3rd element: http://www.dailymail.co.uk/home/moslive ... ement.html The Trouble with Lithium 2: http://www.meridian-int-res.com/Project ... oscope.pdf Larry
  8. mace1934

    Ultracap Bike

    JCG wrote, about the torque arm struggle: "if this thing manages to fail again, I quit! " PLEASE don't quit! We have so much to learn from you and your project. It's so sad, with all you've accomplished on electric matters, that this mechanical thing is giving you so much frustration...
  9. mace1934

    Cycle Analyst V2.0 User Manual, finally complete

    Ditto! Logging someday? Larry
  10. mace1934

    Cross-Canada by Ebike

    Justin, I was away from an internet connection, so missed the wonderful day when you arrived in Halifax. But "Cheers from Halifax, -Justin" , even though read a couple of days after the event, brought tears to my eyes. Congratulations, Justin!
  11. mace1934

    Cross-Canada by Ebike

    Justin, I was away from an internet connection, so missed the wonderful day when you arrived in Halifax. But "Cheers from Halifax, -Justin" , even though read a couple of days after the event, brought tears to my eyes. Congratulations, Justin!
  12. mace1934

    Cross-Canada by Ebike

    Marvellous, Justin! I covered, or paralleled, a small part of the beginning of your trip in 1982: Anacortes, San Juans, Vancouver Island, Vancouver, Harrison Hot Springs, Anacortes. Wish I'd had electric then! I plan to get a 5304 for my next bike. Apparently, you've had no problems with it...
  13. mace1934

    Cross-Canada by Ebike

    Marvellous, Justin! I covered, or paralleled, a small part of the beginning of your trip in 1982: Anacortes, San Juans, Vancouver Island, Vancouver, Harrison Hot Springs, Anacortes. Wish I'd had electric then! I plan to get a 5304 for my next bike. Apparently, you've had no problems with it...
  14. mace1934

    The care and feeding of a123-based packs...

    My simple rules of thumb, based on my experience and the suggestions of others (I recognize that different folks will have different ways of solving problems, or differing priorities): Before starting out on a trip, be sure the pack is fully charged, and have a good idea how much of the pack's...
  15. mace1934

    Clyte 408 or 5304

    Thanks for that Rassy! Maybe it's not such a good idea to put a 5305 on the front wheel of an EZ-3 USX. Larry
  16. mace1934

    Clyte 408 or 5304

    I'm thinking of using a 5305 in the front wheel (20") of a Sun EZ-3 USX recumbent trike. I have a 408/40A_36-72V/66 volt system on my old Rockhopper mtb, which works beautifully - except on hot days riding the final steep hill to home, when the motor can get pretty hot - 160 degrees F once...
  17. mace1934

    LifeBatt cells now available for ebike use

    At what voltage should charging of these cells be stopped? Most promising developments. Will certainly keep an eye on this thread! Larry
  18. mace1934

    Using EagleTree's MicroPower eLogger as a bike computer...

    During rides, the packs are series-connected in pairs, the pairs connected in parallel. L.
  19. mace1934

    Using EagleTree's MicroPower eLogger as a bike computer...

    I can't locate any bad connections, but the recognition of this problem has spurred me to take the time to do it right, and get the cells out from under the limitations of the DeWalt BMSs, whether they are at fault or not. Larry
  20. mace1934

    Using EagleTree's MicroPower eLogger as a bike computer...

    Thanks. Looks like a real winner in the making! I've been noticing a problem lately: different (intact) DeWalt packs discharging at significantly different rates - up to 2 fold. I use 2S3P PACKS, with 2 eloggers on 2 of them and a Whattmeter (WM) on a third (it would be nice to have 6...
  21. mace1934

    Using EagleTree's MicroPower eLogger as a bike computer...

    Gary, Are there any new micro logger developments? Larry
  22. mace1934

    Using EagleTree's MicroPower eLogger as a bike computer...

    Gary, here's one source (among several - even HomeDepot I hear): http://www.gaiam.com/retail/3/SL_SolarElectric_PV My panels are made up of 36 cells; each cell nominally develops (open circuit - OC) 0.5 V in full sun. Two of my panels in series, normal to the sun, will develop about 38 V +/-...
  23. mace1934

    Using EagleTree's MicroPower eLogger as a bike computer...

    Gary, Sorry for the delay; I've been away. I've had that solar array for about 18 years. For many years it powered a well pump, but had been sitting unused for a while until I started using it for my bike. Six 60 watt panels; for the bike app. I have horizontal pairs wired in series. Each...
  24. mace1934

    Using EagleTree's MicroPower eLogger as a bike computer...

    Gary, Many thanks for this post. I've been running a front 408 with 72 V controller and 20S3P A123s on my old Rockhopper. It's a great setup, but the motor tends to get hot on the final climb to my home, so I have to go slow and pedal some. I've been thinking of going with a 5305 (I'm not...
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