Search found 86 matches

by energyi
Nov 02 2018 5:13pm
Forum: E-Bike General Discussion
Topic: E-bike Generator Challenge
Replies: 22
Views: 714

Re: E-bike Generator Challenge

Permanent Magnet DC Generators. My hub motor regens DC.
by energyi
Nov 02 2018 2:17pm
Forum: E-Bike General Discussion
Topic: E-bike Generator Challenge
Replies: 22
Views: 714

Re: 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 efficient. ...
by energyi
Oct 27 2018 6:51pm
Forum: E-Bike General Discussion
Topic: E-bike Generator Challenge
Replies: 22
Views: 714

Re: E-bike Generator Challenge

...it's a terribly inefficient way to transfer power from pedals to wheel. 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 op...
by energyi
Oct 27 2018 12:33pm
Forum: E-Bike General Discussion
Topic: E-bike Generator Challenge
Replies: 22
Views: 714

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 in a...
by energyi
Jun 15 2018 3:41pm
Forum: Items for Sale - Used
Topic: HW E 40152 S 3.2V 15Ah
Replies: 0
Views: 213

HW E 40152 S 3.2V 15Ah

I have Quantity 25+ HW E 40152 S 3.2V 15Ah batteries, $10 each. Located in Denver. Came out of a Prius plug in hybrid conversion by Boulder Hybrids. Sorry will not ship. Denver area only.

energyi
IMG_20180615_135525789-800x600.jpg
IMG_20180615_135525789-800x600.jpg (127.33 KiB) Viewed 213 times
by energyi
Jun 15 2018 3:03pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Around the world on a solar ebike
Replies: 111
Views: 5189

Re: 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 lb traile...
by energyi
Nov 06 2017 3:46pm
Forum: E-Bike General Discussion
Topic: Older Headway and A123 16s Voltage differences
Replies: 2
Views: 222

Re: 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? The...
by energyi
Nov 06 2017 2:47pm
Forum: E-Bike General Discussion
Topic: Anyone use fairings? Why not...?
Replies: 35
Views: 2537

Re: Anyone use fairings? Why not...?

Wrote this topic a few years ago: https://endless-sphere.com/forums/viewt ... =3&t=63812

Here is an explanation of my complete tailbox project:

http://renewableenergyspace.blogspot.co ... t.html?m=1

Energyi
by energyi
Nov 06 2017 10:26am
Forum: E-Bike General Discussion
Topic: Older Headway and A123 16s Voltage differences
Replies: 2
Views: 222

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. The ...
by energyi
Oct 26 2017 2:50pm
Forum: Items for Sale - Used
Topic: Sold: Orion Battery Management System, 84 Cell Rev D
Replies: 1
Views: 313

Sold: Orion Battery Management System, 84 Cell Rev D

Like the subject says, Orion Battery Management System, 84 Cell Rev D for sale on this e-bay website:

https://www.ebay.com/itm/Orion-Battery- ... 3282298708

The auction is for $490 to start, 7 days. Hope this helps someone on Endless Sphere!

energyi
by energyi
Oct 04 2017 5:00pm
Forum: Battery Technology
Topic: Cheapest, Dumbest BMS?
Replies: 26
Views: 1832

Re: Cheapest, Dumbest BMS?

r wrote: Yes 72 cell all in series, 1.5 volts-2.7 voltage range.
Orion BMS? I pulled one out of a working Prius retrofit with more than 78s. Lots of communications.
by energyi
Oct 01 2017 8:41pm
Forum: E-Bike General Discussion
Topic: Speedict Ebike - Anybody seen/tried this?
Replies: 1331
Views: 139680

Re: Speedict Ebike - Anybody seen/tried this?

Very dissatisfied with Mars. Won't be getting Neptune, limiting at 15 cells.
by energyi
Sep 27 2017 6:18pm
Forum: Battery Technology
Topic: Coming Soon A123 Hymotion Modules for ES and ALL
Replies: 58
Views: 5476

Re: Coming Soon A123 Hymotion Modules for ES and ALL

Werks! As shown with ping gear.
16s11p_a123cells_w_ping.png
by energyi
Sep 16 2017 4:10pm
Forum: Battery Technology
Topic: Coming Soon A123 Hymotion Modules for ES and ALL
Replies: 58
Views: 5476

Re: 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.
IMG_20170916_143440106.jpg
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energyi
by energyi
Sep 15 2017 4:59pm
Forum: Battery Technology
Topic: Coming Soon A123 Hymotion Modules for ES and ALL
Replies: 58
Views: 5476

Re: 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 motor c...
by energyi
Sep 15 2017 1:49pm
Forum: Items for Sale - Used
Topic: A123 Hymotion
Replies: 7
Views: 817

Re: A123 Hymotion

Didn't seem to be too much interest in the Hymotion L5 system. Disassembled now, 26V showing on the 7 modules. Anyone in Denver interested in the balancing boards or the inverter, voltage converters at the base of the Hymotion you can come and pick them up, free. PM me. They will be gone Tuesday. IM...
by energyi
Sep 15 2017 8:21am
Forum: Battery Technology
Topic: Coming Soon A123 Hymotion Modules for ES and ALL
Replies: 58
Views: 5476

Re: 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 but chec...
by energyi
Sep 14 2017 2:21pm
Forum: Battery Technology
Topic: Coming Soon A123 Hymotion Modules for ES and ALL
Replies: 58
Views: 5476

Re: Coming Soon A123 Hymotion Modules for ES and ALL

I'm using some recycled first gen. Hymotion A123 bricks on my bike. I cut one cell out of the middle of each 11p group, making two 5p groups. I have a 10Ah 16s pack about the size of shoebox. A123 pack1.jpg Fechter: revisiting this old post because trying to figure out what to do with L5 Hymotion s...
by energyi
Sep 14 2017 1:03pm
Forum: Items for Sale - Used
Topic: A123 Hymotion
Replies: 7
Views: 817

Re: A123 Hymotion

Thanks, Amberwolf. Didn't realize there are sub area rules, doh!. Mea Culpa. $15 per cell obo (probably a ridiculous price)? Would be great if someone in Denver area wanted the whole box. Still, have no idea the status of the pack. Denver area only, will not ship. Will open a general discussion afte...
by energyi
Sep 13 2017 6:23pm
Forum: Items for Sale - Used
Topic: 4kW Prius add on pack, how much is it worth used?
Replies: 5
Views: 887

Re: 4kW Prius add on pack, how much is it worth used?

I sold off the battery charger for the 288V system. Now I'm thinking of repurposing the Orion BMS into a 16s4P ebike pack. Was a 78s LiFePO4. I know this is the for sale used section, just discussing options because no one seemed interested in the Prius config.
by energyi
Sep 12 2017 2:57pm
Forum: Items for Sale - Used
Topic: A123 Hymotion
Replies: 7
Views: 817

Re: A123 Hymotion

I'm assuming it isn't worth as much as it would cost to ship, thus Denver area. Thanks.

energyi
by energyi
Sep 11 2017 4:24pm
Forum: Items for Sale - Used
Topic: A123 Hymotion
Replies: 7
Views: 817

A123 Hymotion

Hymotion Case.jpg
Hymotion Case.jpg (36.24 KiB) Viewed 809 times
A123 Hymotion Model Number.png
A123 Hymotion Model Number.png (34.3 KiB) Viewed 809 times
In Denver area, any interest? PM me, thanks in advance.

energyi
by energyi
Sep 10 2017 12:31pm
Forum: Items for Sale - Used
Topic: 4kW Prius add on pack, how much is it worth used?
Replies: 5
Views: 887

Re: 4kW Prius add on pack, how much is it worth used?

Photo of the system, FYI. Any ideas on what this is worth? One cell not performing well, can be replaced.
IMG_20170909_100342038.jpg
4 kW Prius pack
IMG_20170909_100342038.jpg (48.93 KiB) Viewed 798 times
by energyi
Sep 06 2017 4:18pm
Forum: Items for Sale - Used
Topic: 4kW Prius add on pack, how much is it worth used?
Replies: 5
Views: 887

4kW Prius add on pack, how much is it worth used?

Just checking in on an estimate what a system might be worth. Had this installed 4 years ago, possibly 100 charges. 2011 Prius doesn't allow onboard charging, so it was only charged off wall. Headway LiFePO4 cells and Orion BMS professionally installed. Couple cells are going lower than the rest of ...
by energyi
Aug 11 2017 10:58am
Forum: E-Bike General Discussion
Topic: Three Year Etrike Story
Replies: 9
Views: 1280

Re: 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 trike trailer2.jpg Which has lead to the solariz...