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    69er ebike anyone

    Has anyone ever built a 69er ebike before ? 29 inch wheel in front and a 26inch wheel kit in the rear? I was wondering how that would ride say above 30MPH. Just wondering.
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    Why did you get into electric bikes?

    Very motivating, guys. Thanks to all.
  3. A

    Charging sla with PC power supply

    i've just realized it's not possible.
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    What to do with old PC power supplies

    I'Ve just realized that it's not possible.The black wire is common ground for all yellow ones.
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    What to do with old PC power supplies

    Is it possible to connect the 12v output in series to charge a 48v pack with just one single ps? this is to be used on the road.
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    Charging sla with PC power supply

    I have letz say 14ah of 48v sla, and I want to use one single small form factor PC power supply to charge. How do I go about doing this? First I would have to connect the green wire and the black wire together. Then branch the 12v rail to 4 plugs and connect them in series, then add the 5V rail...
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    YESCOM USA 48V 1000W hub motor (ebay) slips on second ride

    It does look like LIFEPO4 might be better deal overall, safe + longevity.. Maybe I should cut corners and save up money for a few months to cough up about $600.
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    YESCOM USA 48V 1000W hub motor (ebay) slips on second ride

    It looks like laptop batteries are better in a sense that they have already BMS built-in and proven to last a few years.
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    YESCOM USA 48V 1000W hub motor (ebay) slips on second ride

    Does each hard case pack has built in BMS to prevent overcharging about 4.1V and over discharging to below 3.5V?
  10. A

    Yet Another Laptop Battery Pack Build!

    My friend said he knew where to get them. Not sure where. He said something like 12.99 per pack.
  11. A

    Yet Another Laptop Battery Pack Build!

    How many AH is on that pack you built that gets you about 11 miles??
  12. A

    YESCOM USA 48V 1000W hub motor (ebay) slips on second ride

    I read that these Turnigy Lipo will last about 100 cycles. Is that true?
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    YESCOM USA 48V 1000W hub motor (ebay) slips on second ride

    How could you tell if there is a dude cell?
  14. A

    YESCOM USA 48V 1000W hub motor (ebay) slips on second ride

    This price seems pretty reasonable. I wonder why. It seems to be cheaper than other Lipo packs.
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    Yet Another Laptop Battery Pack Build!

    These are HP OEM original battery, haven't been used, but probably very old stock.
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    Batteries that last 20 years.

    http://www.engadget.com/2010/02/05/new-lithium-ion-battery-could-last-20-years-long-after-youve-b/
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    Yet Another Laptop Battery Pack Build!

    I am thinking of the same build for longer trips on the weekends. Currently, my SLA could do well for the 12 mile commute but with a lot of pedaling and very long charging time. I could buy 16 laptop batteries with 14.8v 6600mAH capacity each, and they could be hooked up 4 x4 to get 26.4AH at...
  18. A

    YESCOM USA 48V 1000W hub motor (ebay) slips on second ride

    I've seen laptop battery, original OEM COMPAQ/HP with 6600mAH 14.5v for $12.99 each. Would lithium-ion last longer than lipo?
  19. A

    LiPo V Lifepo4

    I've seen laptop battery, original OEM COMPAQ/HP with 6600mAH 14.5v for $12.99 each. Would lithium-ion last longer than lipo?
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    YESCOM USA 48V 1000W hub motor (ebay) slips on second ride

    How much does Turnigy cost for 58v 26.4 AH
  21. A

    YESCOM USA 48V 1000W hub motor (ebay) slips on second ride

    If I parallel in 4 to get 26.4 AH, would I get some usable C?
  22. A

    YESCOM USA 48V 1000W hub motor (ebay) slips on second ride

    Do you think with the stock controller, I could use 58V on this? There is an old lithium ion laptop battery with output of 14.5V 6.6MH. I was thinking of 3 of these to make 43.5V but not sure if the circuit will turn on. Maybe 4 of them for output of 58V?
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    YESCOM USA 48V 1000W hub motor (ebay) slips on second ride

    Howfar can you go with your 5AH battery?
  24. A

    Yet Another Laptop Battery Pack Build!

    How are you holding out with these batteries? I am trying to build one myself. Wondering if they last. Where do you buy your charger? How fast could you charge these cells?
  25. A

    yescomusa.com (GM) 48V 1000W rear motor kit

    I got a flat on thrid ride out. What brand of tire and tube did you replace it with?
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