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  1. E

    E-bike Generator Challenge

    Permanent Magnet DC Generators. My hub motor regens DC.
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    E-bike Generator Challenge

    Great discussion, thanks for all the insights. The Mando Footloose and the Electrom are great examples of what I was requesting. Thanks. ( http://www.fullycharged.com/Mando-Footloose-IM and http://www.electrom.ca/ ) These designs will evolve and bottom bracket generators will become more...
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    E-bike Generator Challenge

    I would have to disagree. A generator can be 97% efficient, transfer the power directly to the electric motor or store it in a battery if not immediately needed (storage has lower roundtrip efficiency). 100 watts of power optimized for the humans peddle rpm and ergonomics makes lots of sense...
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    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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    Around the world on a solar ebike

    Excellent project fechter, know your pain and motivations. Would be very interested in your charge controller of choice/why, and would recommend anyone looking into doing a similar project to also consider a bifacial module, can generate electricity from both sides. My experience with a 75...
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    Older Headway and A123 16s Voltage differences

    dustiNbone: Thanks for the reply. I think you are right, I have two cells that are higher voltage than the rest of the pack. Instead of removing these two, which would be difficult would it be OK if I use a 100-watt resistor on each of them to reduce the voltage while they are still in the pack...
  7. E

    Anyone use fairings? Why not...?

    Wrote this topic a few years ago: https://endless-sphere.com/forums/viewtopic.php?f=3&t=63812 Here is an explanation of my complete tailbox project: http://renewableenergyspace.blogspot.com/2012/11/inexpensive-lightweight-recumbent.html?m=1 Energyi
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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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    Cheapest, Dumbest BMS?

    Orion BMS? I pulled one out of a working Prius retrofit with more than 78s. Lots of communications.
  10. E

    Speedict Ebike - Anybody seen/tried this?

    Very dissatisfied with Mars. Won't be getting Neptune, limiting at 15 cells.
  11. E

    Coming Soon A123 Hymotion Modules for ES and ALL

    Werks! As shown with ping gear.
  12. E

    Coming Soon A123 Hymotion Modules for ES and ALL

    16s11p using the salvaged electrical straps between sub-assemblies and some zip-ties. Copper wire moved from the center lug. Just have to wait on BMS shipment. energyi
  13. E

    Coming Soon A123 Hymotion Modules for ES and ALL

    Thanks again for your support Fletcher. I ordered a Ping, but am going to need more so your inexpensive suggestion is well taken. Seems to me that your homemade BMS is actually a balancing board, correct me if I'm wrong. That is probably what is needed in one of my scenarios because I have a...
  14. E

    Coming Soon A123 Hymotion Modules for ES and ALL

    Amazing, you make your own BMS. Thanks for the additional pictures. I had mapped out the cut scenario for qty-2 4s11p to 16s5p scenario leaving 8 left over cells, 56 left over cells if all 14 4s11p still have life. Your photos help confirm the cut scenario. I will probably get some ping BMS...
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    Coming Soon A123 Hymotion Modules for ES and ALL

    Fechter: revisiting this old post because trying to figure out what to do with L5 Hymotion system. Your approach seems insightful. Two questions, what BMS did or do you use for 16s scenario. And, do you just leave the one cell in place, cut out of the electrical string? Thanks again for your...
  16. E

    Three Year Etrike Story

    I just noticed on an older blog post that I had promised to write on Endless-sphere about solarizing my recumbent trike. So, on this blog post, I wrote about building a trailer: http://renewableenergyspace.blogspot.com/2016/06/trailer-for-e-trike.html Which has lead to the solarization of...
  17. E

    Voltage limit LiFePO4 charging

    Follow up post, I did purchase the 10 amp charge controller Wincong SL03-4810A, currently less than what I paid, http://www.ebay.com/itm/10A-36V48V-60V-PWM-Solar-Controller-Charge-Regulator-100V-Max-Input-With-USB/141943518483 This can be set for stop-charging voltage, Floating charging...
  18. E

    Voltage limit LiFePO4 charging

    Thanks amberwolf. If I understand this correctly, LiFePO4 BMS don't initiate a balancing procedure till fully charged. Same question then, with a higher voltage. Can a 58V voltage limiter be a successful alternative to a solar charge controller? Best, energyi
  19. E

    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...
  20. E

    One motor on a two wheel trailer?

    I pull the trailer, hub motor on rear wheel of recumbant trike works fine up Colorado hills even with 14.5 foot kayak and gear. More on build: http://renewableenergyspace.blogspot.com/2014/10/new-transportation-etrike-by-joseph.html Thanks for Endlesssphere!
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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...
  22. E

    Catrike Expedition Touring Trike

    Kirk's design was my inspiration for this story: http://www.endless-sphere.com/forums/viewtopic.php?f=3&t=63968 Thanks again Enless Sphere Community. energyi
  23. E

    Used LiFePO4 behavior

    Just a positive update two years later, that pack is still going strong. Very happy with LiFePO4 decision.
  24. E

    Three Year Etrike Story

    Icerider: Sorry this has take so long to reply, didn't see your post notification till just now. I would agree, PV should be on a trailer. In spring we have a neighborhood garage sale and it is a great place to pick up used trailers on the cheap. As for the fire, Here is what I wrote about...
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    Three Year Etrike Story

    Thanks for the message. Spokes don't cross because there is no room, large diameter hub on a small wheel. Motor is the standard HS3540 with the modification on the wiring going into the hub so that there isn't wear...check the archives. Wire goes into the hub at an angle from the side and...
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