Search found 433 matches

by cycborg
Dec 15, 2017 3:59 pm
Forum: E-Bike Technical
Topic: Data logging stream out of Phaserunner?
Replies: 3
Views: 114

Re: Data logging stream out of Phaserunner?

If you've installed BacDoor, in the program folder there's a file called ASIObjectDictionary_x_x_x.xml, where the x's are the version number. It's not pretty to look at, but it contains the codes for the MODBUS parameters, as well as units and scale factors for deciphering the replies. The parameter...
by cycborg
Dec 13, 2017 10:37 am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 61
Views: 3667

Re: bluetooth BMS?

dh68 wrote:
Dec 13, 2017 9:24 am
How can I calcultate the new capacity of the battery?
thunderheart recently posted some discharge curves for the GA; you should be able to estimate capacity from that. Look at the lowest-current curve and calculate capacity between 4.1 and 3.1 V, then multiply by your parallel count.
by cycborg
Dec 08, 2017 2:54 pm
Forum: E-Bike Reviews & Testing
Topic: Sabvoton MQCON review and documents
Replies: 20
Views: 1813

Re: Sabvoton MQCON review and documents

Can not tell from the documentation if the failed hall test will send it into default sensorless mode or if it is running off of the settings I saved. Mistery :roll: Sorry I can't give you a better reference, but I have a vague memory of AlanB saying in some thread that these will continue to funct...
by cycborg
Dec 08, 2017 2:40 pm
Forum: E-Bike Technical
Topic: Pack Voltage Reduction To Run a Light
Replies: 4
Views: 196

Re: Pack Voltage Reduction To Run a Light

I use a 6 V, 3 A supply that costs $7.68 on Amazon. I chose 6 V because this is the standard for bike dyno lights, and I really like the European bike headlights with the sharp horizontal cutoff and distributed beam. I use a Supernova E3 headlight and a B&M taillight, don't remember the model. If yo...
by cycborg
Dec 07, 2017 11:21 am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 61
Views: 3667

Re: bluetooth BMS?

Well, it's all here: http://www.lithiumbatterypcb.com/%E5%8D%9A%E5%AE%A2smart-bms-software-download/smart-bms-software-download/ Thanks, that's helpful. It looks like each model can be configured within a range of cell groups by short-circuiting specific pairs of balance taps. Turns out the one I w...
by cycborg
Dec 06, 2017 2:29 pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1306
Views: 120233

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

My apologies, I saw a post ealier in the thread which mentioned they had a "freewheeling cassette", and thought to ask about it. It appeared they were shipping retrofits for putting cassettes onto older cassette-less motors? Cassette is definitely preferable. I'll make sure to clarify. Seems to me ...
by cycborg
Dec 06, 2017 10:58 am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 61
Views: 3667

Re: bluetooth BMS?

Thanks for help. I need some time to think it over. I'll leave it as it is till then. BTW thanks for posting the instructions. It's been hard to find documentation on these. General question for those who have used these - have you gotten them to work with arbitrary numbers of cell groups? I'm thin...
by cycborg
Dec 05, 2017 3:57 pm
Forum: E-Bike Technical
Topic: 14s bms help
Replies: 11
Views: 273

Re: 14s bms help

In theory, your controller won't draw more than 25A so a 30A rated BMS would be OK, but in the real world, the controller often has a little "overshoot" on the current limit when you are accelerating which might make the BMS trip. I've had this happen on a couple of them but just added shunt resist...
by cycborg
Dec 05, 2017 1:07 pm
Forum: E-Bike Technical
Topic: 14s bms help
Replies: 11
Views: 273

Re: 14s bms help

Hi im making my own 14s 18650 battery. I bought 102 18650 cells with 2200mah samsung. I plan to use this on a 1000w electric bike that has a max continous draw of 25a. I want to get the electric bike kit mag pie from golden ca motors.. Which bms should I buy? ebay: https://www.ebay.com/itm/BMS-PCB-...
by cycborg
Dec 05, 2017 1:05 pm
Forum: E-Bike Technical
Topic: 14s bms help
Replies: 11
Views: 273

Re: 14s bms help

In my opinion, BMS's are useless. I'd manually read voltage of each cell and discharge/charge as needed to balance. Have you shared this advice with Tesla, Nissan, Chevy, Zero, Bosch, every laptop manufacturer, every cell phone manufacturer, etc.? If not, why are you withholding this wisdom from th...
by cycborg
Dec 05, 2017 12:57 pm
Forum: E-Bike General Discussion
Topic: Run motor with insufficient amp batteries damaging?
Replies: 12
Views: 260

Re: Run motor with insufficient amp batteries damaging?

helpfulguy wrote:
Dec 05, 2017 11:16 am
what kind of current limiting device would be good here, while being reliable and keeping cost minimal?
What is your application? Sounds like you're not using a controller, so is this just a replacement for the lead-acid battery in a normal gasoline motorcycle?
by cycborg
Dec 04, 2017 10:55 am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 61
Views: 3667

Re: bluetooth BMS?

Hello there! I have put together 13S5P battery with Sanyo/Panasonic NRC18650GA cells with smart bluetooth BMS. The BMS arrived with basic settings already there (see picture). this is fine, but I would like to change this seetings to achive longer cycle life of the pack and to adjuts the BMS to the...
by cycborg
Nov 28, 2017 6:05 pm
Forum: E-Bike Technical
Topic: High-speed, long-distance (heavy "30^3") Q128 commuter build
Replies: 67
Views: 2247

Re: High-speed, long-distance (heavy "30^3") Q128 commuter build

Take a (longish) length of wire, put 36v across it and a certain current will flow: I = V/R, R doesn't change, so if V increases, I increases. At 48V, it will require 50% more current just to overcome the resistance! If you set the controller to limit the current at 48V to be the same as at 36V, yo...
by cycborg
Nov 09, 2017 9:35 am
Forum: Battery Technology
Topic: looking for recommendations for BMS upgrade
Replies: 22
Views: 322

Re: looking for recommendations for BMS upgrade

If you're planning to match this pack to a 9.5 kW motor, a new BMS is the least of your worries. At 9.5 kW, this battery would be drained in about 4 minutes, assuming it didn't burst into flames first, and I'd put the cycle life in the single digits. Maybe you should give some details on your curren...
by cycborg
Nov 07, 2017 8:54 pm
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 245
Views: 17766

Re: kWeld - "Next level" DIY battery spot welder

Granted, starting a new thread is super complicated, but I bet a mod could help you out if you ask politely.
by cycborg
Nov 06, 2017 4:34 pm
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 61
Views: 3667

Re: bluetooth BMS?

lukas999 wrote:I did like You suggest

after several hours pack was pretty much balanced
Glad to hear it worked. Can you post the settings you used? Also, your old settings, if you remember them, so we know what doesn't work.
by cycborg
Nov 04, 2017 10:36 am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 61
Views: 3667

Re: bluetooth BMS?

I set charge to 4,15 v per cell after few hours this is my reading this bms can't balance them or I doing something wrong ? Your charger is set to 4.15 V/cell, so 58.1 V? The total of the cell voltages in your screenshot is 58.6 V; not an exact match, but probably within the measurement tolerance o...
by cycborg
Oct 31, 2017 10:45 am
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 245
Views: 17766

Re: kWeld - "Next level" DIY battery spot welder

Interested in updates on this.

tatus1969, will you be doing another round of sales?

First-round users, any feedback?
by cycborg
Oct 16, 2017 8:26 am
Forum: E-Bike Technical
Topic: New 2017 updates to ebikes.ca motor simulator to try out
Replies: 62
Views: 8671

Re: Custom Motor

My first thought, without doing a search, was how would a layman measure some of those parameters: Winding Inductance, Hystresis Torque and Eddie Current Torque. Justin explains this here , for all the parameters except inductance. If you don't have access to the appropriate meter for that, you can...
by cycborg
Oct 03, 2017 2:24 pm
Forum: Items for Sale - New
Topic: Compact Field Oriented Controller, ASI + Grin, limited run
Replies: 1022
Views: 126785

Re: Compact Field Oriented Controller, ASI + Grin, limited r

I'm keen to also use the brake levers to get proportional regen braking. Is that possible with the Tripwire? I'm guessing not as it's only two wires. Do you have a product that can do that, or should i just make my own hall sensor setup? I haven't seen a commercial lever with variable output - the ...
by cycborg
Sep 22, 2017 7:27 am
Forum: E-Bike Technical
Topic: Q100H axle problem
Replies: 9
Views: 312

Re: Q100H axle problem

The axle is two separate pieces. If you search there may be a Q128 teardown thread somewhere, but here's one for the Q100 CST which is probably pretty similar. You can see how the axle bolts on to the stator shell via a 6-bolt plate, so probably this was bolted on in the wrong orientation.
by cycborg
Sep 21, 2017 12:46 pm
Forum: Battery Technology
Topic: dc dc cnverters, 12-80V -- where??
Replies: 9
Views: 364

Re: dc dc cnverters, 12-80V -- where??

For the 10 W range, you can use an AC adapter - anything from a laptop power supply down to an iphone charging cube. Just check the output ratings. It has to be a switch-mode supply, not the older transformer type, but anything made in the last 15 years or so should work. Some of these won't work be...
by cycborg
Sep 07, 2017 11:02 am
Forum: Items for Sale - New
Topic: Compact Field Oriented Controller, ASI + Grin, limited run
Replies: 1022
Views: 126785

Re: Compact Field Oriented Controller, ASI + Grin, limited r

1. I thought the regen-voltage was supposed to roll-off as you approach the highest voltage limit and not overshoot. What are your settings for Max Regen Voltage (Start) and Max Regen Voltage (End)? Setting these appropriately works fine for me, although I'm not as close to the absolute limit as yo...
by cycborg
Sep 07, 2017 9:46 am
Forum: Battery Technology
Topic: ULtra Compact 1800W charger + Eltek programming
Replies: 223
Views: 23173

Re: ULtra Compact 1800W charger + Eltek programming

would one Eltek Flatpak2 24V for the regulation be enough? It would regulate the current fine, but it wouldn't have nearly enough voltage range. This sounds like ~30s, so you'd need a range of at least 30*(4.2-2.5) = 51 V. A single 24 V Flatpack would have about 1/5 of that range. You could probabl...
by cycborg
Aug 31, 2017 12:03 pm
Forum: Items for Sale - New
Topic: Compact Field Oriented Controller, ASI + Grin, limited run
Replies: 1022
Views: 126785

Re: Compact Field Oriented Controller, ASI + Grin, limited r

Here is a practical scenario: You lost one of the hall sensors, and the controller will refuse to work even though it's capable of being sensorless. It just waits you to plug the computer and change it's behaviour to "Sensorless". There is a setting, apparently, which can tell the controller to shi...