Search found 279 matches

by PaulD
Feb 17 2020 12:03pm
Forum: Battery Technology
Topic: Bosch powertube repair
Replies: 5
Views: 128

Re: Bosch powertube repair

All the cells are LG 3500mah. They are all discharged to just a few Millivolts. It's not recommended to revive cells that have been discharged below about 1V. At low voltage copper tends to dissolve into the electrolyte and gets re-deposited onto the electrode during charging, and cause shorts. Man...
by PaulD
Feb 17 2020 12:40am
Forum: E-Bike Non-hub Motor Drives
Topic: PaulD's lightweight mid drive development
Replies: 100
Views: 17057

Re: PaulD's lightweight mid drive development

Nobreaks wrote:
Feb 13 2020 6:17am
Great work!
Very interested in buying a Midrive kit as well
Is Australia to far for u to freight once you have stock to sell
Thanks Nobreaks! We can only ship the kit without battery to Australia. Battery shipping overseas is a mess.
by PaulD
Feb 17 2020 12:38am
Forum: E-Bike Non-hub Motor Drives
Topic: PaulD's lightweight mid drive development
Replies: 100
Views: 17057

Re: PaulD's lightweight mid drive development

Grantmac wrote:
Jan 07 2020 10:45pm
Still running the BAC500? What sort of torque figures?
Yup, BAC500, aiming for 75 Nm.
by PaulD
Feb 17 2020 12:36am
Forum: E-Bike Non-hub Motor Drives
Topic: GNG / CYC X1 Pro 3000w
Replies: 463
Views: 63267

Re: GNG / CYC X1 Pro 3000w

I guess its time to try a new controller. Is the Phaserunner a good choice? it looks more plug and play then most controllers and looks pretty user friendly to get 2500W at 14s (50Voltx 50amps). What du you guys think? I just received a Gen 2 with a BAC800 controller, so a Phaserunner should be fun...
by PaulD
Jan 24 2020 10:51pm
Forum: E-Bike Non-hub Motor Drives
Topic: 1.7kg 1000w mid drive
Replies: 41
Views: 4368

Re: 1.7kg 1000w mid drive

How much reduction in chain life are you guys seeing? The Bosch bikes with about half the power and 15-20T sprockets apparently eat through chains really quickly.
by PaulD
Jan 07 2020 5:54pm
Forum: E-Bike Non-hub Motor Drives
Topic: PaulD's lightweight mid drive development
Replies: 100
Views: 17057

Re: PaulD's lightweight mid drive development

Any chance that this more powerful version will work with 48v or higher batteries? I might have missed this somewhere, but what is the current chainline and is it achieved with any sort of special offset chainring? There have been quite a few requests for 48V. What is the reason you want to use 48V...
by PaulD
Jan 07 2020 3:12pm
Forum: E-Bike Non-hub Motor Drives
Topic: PaulD's lightweight mid drive development
Replies: 100
Views: 17057

Re: PaulD's lightweight mid drive development

Any update on the production run of the mid drives. Also, I’d love to hear about any of the “v2” tweaks. -Dave Hi Dave, I'm aiming for the end of February. There are a lot of changes coming, so I hope it will be worth the wait. Here is the tentative list of updates: Power Increase - We have been te...
by PaulD
Dec 25 2019 12:40pm
Forum: E-Bike Technical
Topic: Looking for someone to help configure/tune asi 8000 controller
Replies: 13
Views: 927

Re: Looking for someone to help configure/tune asi 8000 controller

Paul in the meantime before the motor gets here, as you mentioned for the harness, the following is how i have it set up. Correct me if im wrong on anything. Below is the pin out for the asi controller. Im still a bit confused on what pin 5 is for in the asi harness. And for the on off, i noticed t...
by PaulD
Dec 23 2019 12:56pm
Forum: E-Bike Technical
Topic: Problem setting limits on Bac800.
Replies: 8
Views: 653

Re: Problem setting limits on Bac800.

The speed limit, wattage limit, motor current limit is not obayed. I do not have BACdoor, i have no login credentials for that app. I have quite a few Eggriders in service. I have one that does not enforce speed limit after about a year of use (the limit defaults to the controller settings if it is...
by PaulD
Dec 21 2019 6:43pm
Forum: E-Bike Technical
Topic: Looking for someone to help configure/tune asi 8000 controller
Replies: 13
Views: 927

Re: Looking for someone to help configure/tune asi 8000 controller

Hi Andrew, perhaps we can sort this out on the forum so it might benefit others. Thanks for your PM. Are you all set up to communicate with the controller? Can you post your existing wiring diagram so we can review?
by PaulD
Dec 21 2019 6:38pm
Forum: E-Bike Technical
Topic: Problem setting limits on Bac800.
Replies: 8
Views: 653

Re: Problem setting limits on Bac800.

Snurt wrote:
Dec 20 2019 11:06pm
Everything works, gear sensor, throttle, PAS and break sensors.
But the controller wont adhere to the limitations i put in the EggRider ASI settings.
Which parameter isn't being obeyed? Motor power or phase current or?
Perhaps the assist mode source wasn't set in the ASI? Do you have BACdoor?
by PaulD
Nov 21 2019 7:01pm
Forum: E-Bike Non-hub Motor Drives
Topic: Internally geared BLDC motor
Replies: 17
Views: 1781

Re: Internally geared BLDC motor

My big concern is that it has an open case and will need to be sealed to live a long life in the elements. And where's the dyno sheet? Agreed. There isn't enough test data (maybe intentionally?). If they would post no-load current at 2 different voltages, we could use Justin's motor simulator to te...
by PaulD
Nov 21 2019 3:18pm
Forum: E-Bike Non-hub Motor Drives
Topic: Internally geared BLDC motor
Replies: 17
Views: 1781

Re: Internally geared BLDC motor

$400 for a 500w rated air cooled motor... OK, it's only 1lb, but that's asking quite a lot. Personally i'd rather get a little dual reduction geared hub instead, for a third of the price.. i can stand another 5lbs! It's interesting to note that the value metric on ES is $/watt , but those of us wit...
by PaulD
Nov 14 2019 2:41pm
Forum: Battery Technology
Topic: Internal Resistance for pack of LG HG2 cells
Replies: 25
Views: 1692

Re: Internal Resistance for pack of LG HG2 cells

To be clear, you want to measure the resistance of each 14S1P string? Or each 1S20P group? Not sure how your pack is configured. Basically, you can estimate current using I = V/R. I usually use 2C current for measuring DC resistance. If your current is too low, the voltage drop is too low and your a...
by PaulD
Nov 05 2019 5:54pm
Forum: E-Bike Build Threads / Photos & Video
Topic: leaning trike cargo bike front end kit
Replies: 127
Views: 19671

Re: leaning trike cargo bike front end kit

Looks like a lot of fun. I agree that increasing the maximum lean angle is a good idea. I think a cornering video that's not from the riders perspective would be cool to see.
by PaulD
Nov 05 2019 5:22pm
Forum: E-Bike Non-hub Motor Drives
Topic: PaulD's lightweight mid drive development
Replies: 100
Views: 17057

Re: PaulD's lightweight mid drive development

jvm37 wrote:
Nov 05 2019 5:04pm
Paul I have sent you a couple of emails
I am interested in buying one of your kits
Please take a look
I just checked my spam, and I'm not seeing your messages. Which email address did you send them to? Maybe the web contact form is broken. I'll test it out.
by PaulD
Nov 02 2019 10:26pm
Forum: E-Bike Build Threads / Photos & Video
Topic: leaning trike cargo bike front end kit
Replies: 127
Views: 19671

Re: leaning trike cargo bike front end kit

This is great, stellar work!
How much front suspension travel? Have you searched patents to see if there is any risk in violation if you bring it to market?
by PaulD
Nov 02 2019 2:14pm
Forum: E-Bike Technical
Topic: Programming ASI Bac 8000
Replies: 6
Views: 790

Re: Programming ASI Bac 8000

For the benefit of the community, I'll summarize our email discussion, firstly, here were the suggestions on battery protection parameters. ASIerrors.png Then you had instantaneous undervoltage errors due to incorrect SOC algorithm parameters, since you are using the ASI battery protection scheme. N...
by PaulD
Oct 31 2019 1:03pm
Forum: Battery Technology
Topic: Shipping batteries, or cheap alternative for benchtop testing?
Replies: 14
Views: 849

Re: Shipping batteries, or cheap alternative for benchtop testing?

1. Look into Ligo bricks from Grin. Ligo bricks are 36V. He needs 48V. 2. SFAIK, batteries installed in a sealed, rigid enclosure are somewhat easier to comply with shipping regulations. 3. My battery was in such an enclosure, enclosed in a bag, then placed in a box full of what appears to be Vermi...
by PaulD
Oct 30 2019 10:37pm
Forum: Battery Technology
Topic: Shipping batteries, or cheap alternative for benchtop testing?
Replies: 14
Views: 849

Re: Shipping batteries, or cheap alternative for benchtop testing?

Just a few updates: -Luna Cycle was not willing to provide me with a UN safety certificate, so I wouldn't really be able to re-ship one of their packs. -An unnamed vendor was willing to provide the UN safety certificate, but for a much smaller battery than what I was asking for. They said that when...
by PaulD
Oct 28 2019 4:24pm
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 1030
Views: 138121

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

I have another idea: Why bother welding at all? I already mentioned using some reflow solder paste between the nickel or copper and the cell. As the weld is made, it creates a lot of localized heat. Enough heat to melt solder and short enough duration to NOT heat up the cell. This may be a great wa...
by PaulD
Oct 24 2019 10:06pm
Forum: Battery Technology
Topic: Wire Bonding machines
Replies: 7
Views: 757

Re: Wire Bonding machines

I have contacted Hesse Mechatronics and hoping to get a decent price soon, but there are a few cheaper Alibaba types such as Minder Hi-Tech. I think they started at $60k. Cool, I wonder if Minder is any good. I was hoping they would be significantly cheaper than US and EU machines. Let us know what...
by PaulD
Oct 22 2019 11:34am
Forum: Battery Technology
Topic: Testing the internal resistance of a li ion cell and making determinations
Replies: 36
Views: 1675

Re: Testing the internal resistance of a li ion cell and making determinations

If we knew the specific heat capacity and DC IR of the above 18650 cell we could work out the total cell heating and compare it to that predicted by simple ohmic heating - approximately - on account of heat loss due to imperfect insulation, heating of box interior etc. It's been a while but I recal...
by PaulD
Oct 21 2019 4:14pm
Forum: E-Bike Non-hub Motor Drives
Topic: GNG / CYC X1 Pro 3000w
Replies: 463
Views: 63267

Re: GNG / CYC X1 Pro 3000w

Has anyone been charged any tariff in these product categories yet, at all? The tariffs only apply to shipments over $2K (or is it $2500?). And it seems to apply to country of origin(manufacture), not where it is shipped from. Is CYC manufactured in HK or mainland China? I had to pay tariffs on a l...
by PaulD
Oct 21 2019 12:27pm
Forum: Battery Technology
Topic: Wire Bonding machines
Replies: 7
Views: 757

Re: Wire Bonding machines

I recall them starting around $70-80K USD. That size you are looking for would be more $$. This was at 5 years ago.
In my past job, we looked at Hesse, F&K and K&S.. then decided not to use cylindrical cells :roll:
What does your company build?