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  1. M

    Who has the lowest wh/mile bike?

    Thank you everyone for your replies. This is what I'm most interested in. Pedaling varies, so I'd like to know the efficiency for motor-only, maybe at a set speed, such as 20mph. I think that this figure is just as important as top speed.
  2. M

    Who has the lowest wh/mile bike?

    Who has the most efficient bike? Also, what's the most efficient production e-bike?
  3. M

    Buying an eBay LiFePO Battery via Craigslist. Can I test it?

    Okay, going to look at it in an hour or two, fingers crossed. Stay tuned!
  4. M

    Buying an eBay LiFePO Battery via Craigslist. Can I test it?

    Okay, after a little bit of sleuthing, the ebay seller is chinarichroc2009 (http://myworld.ebay.com/chinarichroc2009) AKA Zita Huang of RICHROC (http://myworld.ebay.com/chinarichroc2009) Also selling through DIYTrade (http://www.aliexpress.com/store/612373) and AliExpress...
  5. M

    Buying an eBay LiFePO Battery via Craigslist. Can I test it?

    @dnmun & Dogman: Thanks for the advice, that's a lot more than I though that I'd be able to do with a voltmeter! I will post my results, and if I have any more questions, I will let you know. @999zip999: How would I be able to know if it is a 220 cell pack? @iamsofunny: Are you thinking of a...
  6. M

    Buying an eBay LiFePO Battery via Craigslist. Can I test it?

    I've very new at non-SLA battery packs, do you have any visual aid to illustrate the process? Thanks.
  7. M

    Buying an eBay LiFePO Battery via Craigslist. Can I test it?

    Okay, so I'm going to look at a LiFePO4 48v 20ah battery back that's for sale on craigslist for $200. The sell says that he bought it on ebay a month ago for $600, but lost interest, which I believe. If I test the voltage, what should I be looking for? I was thinking about buying a power...
  8. M

    Turnigy 130A Watt Meter, WILL IT GIVE AN AH RATING??

    Thanks for the quick replies. I'm looking to use it to test the capacity of used batteries.
  9. M

    Turnigy 130A Watt Meter, WILL IT GIVE AN AH RATING??

    I'm thinking of purchasing the "Turnigy 130A Watt Meter and Power Analyzer": http://www.hobbyking.com/hobbyking/store/uh_viewItem.asp?idProduct=10080 But am wondering if it has a function to measure battery capacity. Thanks for the help.
  10. M

    Several Yuba Mundo Builds

    Nice solution. What's the range on those suckers? They look like serious moped killers.
  11. M

    What does 15s mean for Li batteries?

    Thanks! I'm stuck with SLAs right now but look forward to working with less archaic battery technologies soon!
  12. M

    What does 15s mean for Li batteries?

    First off, don't jump on me for not looking it up, I've been lurking for a while and tried to look it up a few times. So what does the "s" mean? What is the voltage per "s'"? Thanks.
  13. M

    Several Yuba Mundo Builds

    I have always thought that they would be great e-bikes, but couldn't see a good way to use a hub motor on it because of the 14mm dropouts. How did you do it?
  14. M

    Suck, squeeze, bang, bust: the death of the ICE (article)

    Well right now it is of course, did you read the article?
  15. M

    recycling batteries

    I thought that SLA recycling was one of the most successful. I think one of those "how it's done" basic cable TV shows they showed a recycling plant in the US that did SLAs. A lot of e-waste recycling truly is a problem, but I'm not so sure that this is the case with SLA batteries.
  16. M

    Suck, squeeze, bang, bust: the death of the ICE (article)

    http://www.engadget.com/2011/02/03/suck-squeeze-bang-bust-the-death-of-internal-combustion/ Good article, but clearly a lot of people in the comments who question EV performance and style haven't seen the crazy stuff that people on here are up to. :D
  17. M

    E-BikeKit Wheel laced wrong (Some old close-out wheels only)

    That's good to hear, will edit original post to reflect this.
  18. M

    E-BikeKit Wheel laced wrong (Some old close-out wheels only)

    I couple of months back I bought a direct drive (9c) front 26" wheel on close-out from E-BikeKit. When I got the wheel I noticed that the spokes had a noticeable bend in them near the rim and spoke nipple. At first I thought that it was because the hub is much larger than a normal one and the...
  19. M

    Help with lead acid battery charger!

    Hi, I'm going to be running 3 12v 18ah AGM batteries and I need buy a charger. It's my understanding that it's better for the batteries to be charged individually, its this so and how much of a difference is there? I was looking at getting 3 of these chargers, which at 4 amps should charge it in...
  20. M

    Golden motor magic controller or other?

    Thanks for all the replies. I've decided on Lyen's 9 FET controller. Sounds good with the 9 continent motor. :D
  21. M

    Golden motor magic controller or other?

    Anyone?
  22. M

    Golden motor magic controller or other?

    Hello, I'm looking to set up an electric assist cargo bike using a Nine Continent 6x10 hub motor. The golden motor "magic" controller looks neat, but do all the bells and whistles compromise efficiency and reliability? Can anyone say if this is a good controller or recommend another? Also I'd...
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