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by amberwolf
Dec 12 2018 9:08pm
Forum: E-Bike Technical
Topic: Do I have this right regarding fusing?
Replies: 2
Views: 36

Re: Do I have this right regarding fusing?

Sounds right, but the converter is not 100% efficient, so the current will be higher by the actual efficiency (could be anything from as low as 50% to as high as something in the 80s, maybe more). If there's no specs on any of that you might want to assume the worst case. Breakers usually have vario...
by amberwolf
Dec 12 2018 1:21am
Forum: Battery Technology
Topic: NiCd for 36v1000w motor
Replies: 4
Views: 72

Re: NiCd for 36v1000w motor

Yeah, it's something I discovered the same way Fechter did (in the link above), sometime in the 90s when I used to build scifi props for conventions and such...NiCd was the only rechargeable stuff I could find then, and it was way easier to seal them up in the props than make battery compartments a ...
by amberwolf
Dec 11 2018 11:53pm
Forum: E-Bike General Discussion
Topic: Compound Gearing with two IGH
Replies: 8
Views: 150

Re: Compound Gearing with two IGH

What I do not understand is the crank gear of 10T is going to 1st IGH, with its "normal" operating gear of 20T and the IGH set to 75%, but then there is an added gear mounted on the flange. Different then the common Compound Gearing thats easily solvable. How does one finish the calculation? Not su...
by amberwolf
Dec 11 2018 11:40pm
Forum: Battery Technology
Topic: NiCd for 36v1000w motor
Replies: 4
Views: 72

Re: NiCd for 36v1000w motor

36v 1000w brush-less motor (but it only has 2 wires?) That would probably be a brushed motor. If you apply power to the wires (like from a car battery) then the motor will spin at about 1/3 of the speed it would have with the original, if it is a brushed. Reversing the wires will reverse the direct...
by amberwolf
Dec 11 2018 10:39pm
Forum: Battery Technology
Topic: How does a BMS balance cells ?
Replies: 6
Views: 122

Re: How does a BMS balance cells ?

There are a number of threads on how BMSs work, if you look thru this list: https://endless-sphere.com/forums/search.php?keywords=bms+work*&terms=all&author=&sc=1&sf=titleonly&sr=topics&sk=t&sd=d&st=0&ch=300&t=0&submit=Search Not everything is relevant, mostly easy to figure out by title. charging w...
by amberwolf
Dec 11 2018 10:27pm
Forum: General Discussion
Topic: Discussion on counterfeits
Replies: 4
Views: 104

Re: Discussion on counterfeits

These third shift goods aren’t counterfeits in the traditional sense of the word. OEMs use exactly the same materials and production processes to make additional products that are then sold through unauthorized channels. ...then the products will be of the same quality as those "OEMs" units from th...
by amberwolf
Dec 11 2018 10:17pm
Forum: Battery Technology
Topic: 48V Li-Ion shuts itself down at ~45V
Replies: 4
Views: 79

Re: 48V Li-Ion shuts itself down at ~45V

I can't tell exactly because my wattmeter resets itself when the supply drops to zero. Most wattmeters I've seen have an Aux input for a battery to sustain them when mainpower is cut. (both teh WattsUps and Turnigy Watt Meters I have do..the Cycle Analysts don't need it cuz they save their data at ...
by amberwolf
Dec 11 2018 10:03pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Help with throttle wires please guys
Replies: 6
Views: 269

Re: Help with throttle wires please guys

Since the wires broke, you'd have to repair the wires, either by splicing them back together (probably color to color), or by replacing the entire cable that contains the broken wires. Once the wires are repaired, then anything else that is not working can be troubleshot (you'd just have to report b...
by amberwolf
Dec 11 2018 9:55pm
Forum: E-Bike General Discussion
Topic: Stromer STX1 -> Hack
Replies: 9
Views: 232

Re: Stromer STX1 -> Hack

It's a pain since the spokes have to be removed and you need a 3 jaw puller. You find instructions and photos if you search this forum. Somewhere in my posts is a thread about one of the UUmotors off a stromer, that opens like this, showing takeapart, including internal pics/etc. I suspect it's int...
by amberwolf
Dec 10 2018 10:19pm
Forum: E-Bike General Discussion
Topic: Trying to pick between rear hub motor versus pusher trailer
Replies: 5
Views: 128

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: 115

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: 4
Views: 166

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: 357

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: 133

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: 133

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: 164
Views: 5862

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: 152

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: 133

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: 61

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: 297

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: 357

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: 9
Views: 232

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: 198

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...