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by amberwolf
Dec 10 2018 10:19pm
Forum: E-Bike General Discussion
Topic: Trying to pick between rear hub motor versus pusher trailer
Replies: 4
Views: 96

Re: Trying to pick between rear hub motor versus pusher trailer

THe problems with motors in the trailer are (besides lack of time to experiment) one of the main reasons I have not yet added motors to any of my trailers, and instead just use massive motors in the cargo bike and trike, which are sufficient to pull several hundred pounds of dogs, dog food, or a pia...
by amberwolf
Dec 10 2018 9:53pm
Forum: General Discussion
Topic: Switching my shifters
Replies: 6
Views: 103

Re: Switching my shifters

In order for me to have the cutout switches, I have to install the levers that came with my hub motor. Nope. You can buy off the shelf solutions like: HWBS (hidden wire brake switch; not directly compatible with existing wiring on all controllers, might require opening the controller to add wires) ...
by amberwolf
Dec 10 2018 9:39pm
Forum: Battery Technology
Topic: DIY battery enclosures
Replies: 3
Views: 105

Re: DIY battery enclosures

You could check with your local powerchair / medical supply places and see if they have old dead SLA you could rip the guts out of. UPS/server backup power units also use them, so places that service those may also have them. Local recyclers may have piles as well. You can fabricate shells in a numb...
by amberwolf
Dec 10 2018 9:29pm
Forum: E-Bike Technical
Topic: Ebike issues - strange and unseen
Replies: 15
Views: 336

Re: Ebike issues - strange and unseen

To use the firmware, the thing that is important is the manufacturer of the controller and the MCU/etc they used. To find out if yours is compatible, look up Casainho's posts to find the threads about the new firmware.
by amberwolf
Dec 10 2018 9:26pm
Forum: E-Bike Technical
Topic: 36/72V switch for Solar charging my bike
Replies: 9
Views: 124

Re: 36/72V switch for Solar charging my bike

I actually have the same problem but I am doing a gas generator (38cc 4-stroke motor). You can also split the output from each 36V battery into parrelel connectors and then hook one connection for the serial 72V and the other to the solar charger. Like this diagram. Confirm this though I am not the...
by amberwolf
Dec 10 2018 9:23pm
Forum: E-Bike Technical
Topic: 36/72V switch for Solar charging my bike
Replies: 9
Views: 124

Re: 36/72V switch for Solar charging my bike

I have 2 36v packs that terminate into a Anderson plug that has 4 connector . I then have a matching 4 connector Anderson plug that series the two 36v packs to 72v that goes to the controller . I made a charge plug that plugs into the 36v packs that parallels the 2 packs to one . So when I what 72v...
by amberwolf
Dec 10 2018 9:13pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Appel Electric Cruiser
Replies: 163
Views: 5829

Re: Appel Electric Cruiser

I'm so tired right now that I'm probably either just being stupid or misunderstanding the drawing, but isn't that actually the *rotor* plate? It looks kinda like it has stacks of magnets with a spot for a set screw at the top (outer circumference)...but I can't be sure. The stator has all the windin...
by amberwolf
Dec 09 2018 10:50pm
Forum: Items Wanted
Topic: Open source e-bike controller - 250-500 W wanted
Replies: 5
Views: 148

Re: Open source e-bike controller - 250-500 W wanted

No, because the CA is what's doing the limiting/etc. It's a microcomputer. It doesn't matter what controller it's used with--it works with all of them the same way. The dumber the controller, the better, so you don't have to mess with two sets of settings to get it working the way you want. (setting...
by amberwolf
Dec 09 2018 10:42pm
Forum: E-Bike Technical
Topic: 36/72V switch for Solar charging my bike
Replies: 9
Views: 124

Re: 36/72V switch for Solar charging my bike

The simplest method to do this that is oopsproof is to use a keyed jumper plug (that only fits one way) that connects the batteries in series to the controller for riding. When it is removed, neither battery is connected to anything (including it's counterpart). Then the charger plug uses a connecto...
by amberwolf
Dec 09 2018 10:07pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Brainpower motor controller
Replies: 1
Views: 57

Re: Brainpower motor controller

I need help! I have a 36v1000w brushed motor scooter, and I want to upgrade the controller to a Brainpower 38a brushless controller. Can I do that? Since your existing motor is a different kind, the new controller won't run it. You'll need to replace the motor with a new brushless motor with the sa...
by amberwolf
Dec 09 2018 9:37pm
Forum: Battery Technology
Topic: Why large parallel connection in battery packs ?
Replies: 9
Views: 277

Re: Why large parallel connection in battery packs ?

Not sure I get your point: in "parallel first, than series" config, you still need to connect the bms wires. No more, no less bms wires, than in the "series first, than parallel" config. If a pack is built with a bunch of Xs1p groups, with no built-in parallel interconnects, then you need a complet...
by amberwolf
Dec 09 2018 9:30pm
Forum: E-Bike Technical
Topic: Ebike issues - strange and unseen
Replies: 15
Views: 336

Re: Ebike issues - strange and unseen

If the controller is the problem (something in it's hall sensor reading ability), and if it is a KT Kunteng Kun Teng controller, you may be able to use the open-source firmware that Casainho / Stancecoke et.al are creating. They also have some for the LCDs for those controller. Just look up Casainho...
by amberwolf
Dec 09 2018 12:20am
Forum: E-Bike General Discussion
Topic: Stromer STX1 -> Hack
Replies: 8
Views: 196

Re: Stromer STX1 -> Hack

It probably will (been done with a number of Stromer rear hubmotors by UUmotor here on ES and elsewhere), but without the Stromer controller you lose the torque sensing PAS, if taht's a feature you like (assuming this model has one like the others I've seen, mounted in a recess at the rear dropout).
by amberwolf
Dec 09 2018 12:03am
Forum: E-Bike General Discussion
Topic: E-bike Powered by Tool Batteries?
Replies: 7
Views: 182

Re: E-bike Powered by Tool Batteries?

I was wondering if anyone has made an e-bike powered with batteries from any of the battery powered tools (e.g. Greenworks, Ego, Ryobi, etc). There's probably dozens of tool pack (toolpack) builds on ES, going back to the old DeWalt A123 packs, to the earliest days of the forum (and probalby before...
by amberwolf
Dec 08 2018 11:57pm
Forum: E-Bike Technical
Topic: Ebike issues - strange and unseen
Replies: 15
Views: 336

Re: Ebike issues - strange and unseen

If the hall sensors themselves operate correctly, when measuring with controller plugged into motor, then it's probably not a connection or hall problem. But it could be a phase problem, either connection between motor and controller, or failed FETs inside the controller. It could also be a mismatch...
by amberwolf
Dec 08 2018 11:43pm
Forum: E-Bike Technical
Topic: bms with canbus
Replies: 3
Views: 103

Re: bms with canbus

CANbus is just a protocol. Commands/data/etc are all device specific. So unless you reverse engineer what the A2B BMS should be sending for each query by the controller, and then figure out how to program that into a new BMS, or build a microcontroller that interprets each way for each device so the...
by amberwolf
Dec 08 2018 11:30pm
Forum: Battery Technology
Topic: Why large parallel connection in battery packs ?
Replies: 9
Views: 277

Re: Why large parallel connection in battery packs ?

As long as there are series connections from every cell in a group to the next series cell, then there's no need for anything but "token" parallel connections. That's probably the better way to do it. "series first, then parallel" is one way to say it. But many packs I've seen are built with only on...
by amberwolf
Dec 08 2018 10:21pm
Forum: Battery Technology
Topic: Resting voltage for LifePo4
Replies: 11
Views: 233

Re: Resting voltage for LifePo4

They are new cells. New new, or new to you new? I ask because "new old stock" that has sat around a long time can have the same issues that cells in-use for some time do. If they sat around fully charged or fully discharged (or worse) all that time, too, then that also negatively affects their beha...
by amberwolf
Dec 08 2018 12:09am
Forum: E-Bike Technical
Topic: The SB Cruiser: Amberwolf&Dogman's 2WD CargoTrike&DogCarrier
Replies: 801
Views: 87767

Re: The SB Cruiser: Amberwolf&Dogman's 2WD CargoTrike&DogCarrier

I've finally had enough time here and there to get the CAv3 setup with the 3.12b3 firmware (vs 3.1 I'd had before), and reset it to factory during the FW upgrade to clear some "invisible" bad settings that were causing me problems with power limiting when running the throttle thru the CA (so I could...
by amberwolf
Dec 07 2018 11:38pm
Forum: Motor Technology
Topic: Controlling a Motenergy ME1117 using CAN Open Protocol
Replies: 2
Views: 232

Re: Controlling a Motenergy ME1117 using CAN Open Protocol

First: why, exactly and specifically, do you want to use CAN? Keep in mind that CAN is just a protocol. Every controller and device will use different actual data and commands, so you have to contact the controller manufacturer to get the CAN commands and format for the specific controller you are u...
by amberwolf
Dec 07 2018 11:23pm
Forum: Battery Technology
Topic: NASA guidlines to safe high perf 18650 cells batteries
Replies: 4
Views: 215

Re: NASA guidlines to safe high perf 18650 cells batteries

If useful, some other NASA battery stuff posted here over the years: https://batteryworkshop.msfc.nasa.gov/presentations/Perf_Safe_Test_Panasonic_Li-Ion_NCR_18650_Cells_JRead.pdf https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/20140013497.pdf https://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.g...
by amberwolf
Dec 07 2018 11:10pm
Forum: Battery Technology
Topic: Resting voltage for LifePo4
Replies: 11
Views: 233

Re: Resting voltage for LifePo4

Depends on the age and condition of the cell, but older cells often drop down like that.
by amberwolf
Dec 07 2018 11:09pm
Forum: Battery Technology
Topic: Dead cell row can't load test?
Replies: 2
Views: 77

Re: Dead cell row can't load test?

Depends on what's wrong inside, but there's a serious flaw in your testing scheme: If you pass current thru a 0V cell, you are reverse-charging it, as if you had hooked it up backwards to the charger. This is a really bad idea, and depending on what's wrong with teh cell(s) and their chemistry, can ...