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  1. E

    E-bike Generator Challenge

    Challenge your thinking some by envisioning a generator at the bottom bracket of bikes. No chain, no sprocket, no derailer, no shifters, no cassette. Only an electric motor, battery, controller (with high-efficiency regenerative braking) wires, throttle, and a generator. The E bike would evolve...
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    Older Headway and A123 16s Voltage differences

    ES: Simultaneously breaking down two older LiFEPO4 plug-in-hybrid packs from higher voltage to nominal 48V's 16s configurations. I need some Endless-Sphere help in reconciling why the same charger>BMS will have different end voltages? The A123's ends at 59.4 volts and balances the cells nicely...
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    Voltage limit LiFePO4 charging

    Doing a recumbent e-trailer project which includes carrying some old recycled solar panels, 150 watts at 48 volts (open-circuit voltage is ~80), and want to charge my LiFePO4 20 amp-hour battery which tops out at a 58 volt limit charging. A charge controller could be used for my needs to...
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    Firstbuild, PCmag and Velomobiel

    Few links which may be interesting to Endless-sphere community: Firstbuild is an on-line community of solvers where you can be paid to help; thought I saw some drift trikes already being developed: https://firstbuild.com/ And PCmag has a recent photo gallery of innovative e-transporation...
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    Three Year Etrike Story

    New Transportation Etrike Introduction to Tadpole Recumbent / Purchase Strategy Always wanted to have the most energy efficient ride, so in June of 2011 I started searching for a used tadpole recumbent trike. These are low to the ground which reduces air drag or air friction, but there are...
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    Political Coroplast Posters Recycled into Fairings

    As always, thanks for endlesssphere for all the community support. Here is a blog that shows how to take the political posters you are probably seeing in your community and turn them into an energy saving fairing...
  7. E

    HS3540 20" wheel and spokes

    Dear Endlesssphere: I need your help. Can someone suggest the best spokes/wheel suggestion for a HS3540 motor and 20" wheel, ideally from the same US based vendor? Mostly road/paved trails, 100 to 150 lbs on this wheel. I am tired of constantly having to tighten the spokes. I will have a local...
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    Denver Area Swap Meeting(s)

    Anyone in the Denver area want to get together and swap stories or stuff? I have some left over Lipo stuff after upgrading to LifePO4. I will be at the West Metro Light Rail grand opening today and maybe tomorrow (trying to see if recumbent trikes can get on the line ~smiley~. Perhaps a regular...
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    Used LiFePO4 behavior

    Have a question for ES on a used LiFePO4 battery (48V, 20 AH Golden Oasis). It seems to self discharge. Is this consistent for LiFePO4 technology? In the first hour after charging with no load (20 ma voltmeter) it drops from 57.97 V to 57.00 V. It further dropped to 56.74 V in the next two...
  10. E

    12S2P Lipo Burnout

    ES: Here is a 3 minute video of the smoke that comes out of a 12S2P 20C Lipo, 4 bricks pack: http://www.youtube.com/watch?v=5MsVqcy4k6Y Wrapped with compression tape on thin foam sheets, not banged up that I am aware. Batteries had been balanced 10 rides ago, last month. 4 months old...
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    12S to 14S adding 2S to two 6S

    ES: As always, thanks for the board and discussions. Is there any problem adding a 2S pack to two 6S packs that are in series to make a 14S if all the amperage and charge rates are the same? For example, have two 6S 5000mah 20C in series and want to add another 2S 5000mah 20C for a small...
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    Battery for EZ008

    ES Replacement Battery Experts: This question is for a friend of mine, who has the EZ008 (http://forums.redflagdeals.com/ebike-affordable-full-feature-electric-bike-ez008-ez005-601762/) where the battery is shot. Any easy replacement battery suggestions? Looks like it is a Li-Ion Battery, but...
  13. E

    $10 tailbox

    ES: Tried to post this at bentriders, but couldn't upload the link. Might also belong at recumbent.com, but am posting it here because it has an hub motor too ~smiley~. What is the etiquette, do I need to cut and paste the text, photos and video or can I just post the blog...
  14. E

    Solar Electric Motorcycle Sets New Speed Record

    189.086 MPH Electric motorcycle record using solar power to charge: http://green.autoblog.com/2012/11/13/lightning-motorcycles-solar-el-mirage-speed-record-189-mph/
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