Search found 2096 matches

by justin_le
Jul 06 2019 11:45pm
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 680039

Re: Cycle Analyst V3 preview and first beta release

That was my first idea to do it, but unfortunately the Lebowksi's safety feature won't make it finish boot if the throttle in signal is higher than idle throttle. So let's say you calibrated your throttle to 1.5-3.5V and it sees a throttle voltage of 1.6V during boot it will wait until voltage is a...
by justin_le
Jul 05 2019 10:14pm
Forum: Items for Sale - New
Topic: Compact Field Oriented Controller, ASI + Grin, limited run
Replies: 1202
Views: 203889

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

This is a nice update, thanks. I’ll have a test ASAP. Apparently there was a chance of a memory leak with the beta build that I posted the other day so use these links here instead Windows: https://www.dropbox.com/s/bh92ddhvsh2ytwz/Beta-1.0%20PhaseRunnerSuite%20V1.1.0.exe?dl=0 MacOS: https://www.dr...
by justin_le
Jul 05 2019 10:02pm
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 680039

Re: Cycle Analyst V3 preview and first beta release

I guess it wouldn't be too hard to implement. Just check it speed>x km/h, then add some (pre defined) voltage to the idle throttle voltage. No need to check for Watts used or so, even though that would be convenient. I guess a simple implementation like that would really help. Correct. The risk wit...
by justin_le
Jul 04 2019 4:10pm
Forum: E-Bike Technical
Topic: GMAC vs MAC and Infineon vs Phaserunner
Replies: 16
Views: 959

Re: GMAC vs MAC and Infineon vs Phaserunner

So far I love it. The drag from the clutchless GMAC isn't bad at all, in spite of the numbers, in a 20" wheel it seems to coast as good or better than my Stromer. I'll probably still mess with the coasting function when the firmware comes out, but I would be perfectly happy as is. We're just now in...
by justin_le
Jul 04 2019 3:57pm
Forum: E-Bike Non-hub Motor Drives
Topic: PaulD's lightweight mid drive development
Replies: 64
Views: 8520

Re: PaulD's lightweight mid drive development - Looking for Beta Testers

https://endless-sphere.com/forums/download/file.php?id=241465 Hey Paul, what's that cute looking battery package I see there!? :wink: Big kuddos on getting a custom kit design from development into what is getting very close to full production. I love seeing people succeed in making their vision pa...
by justin_le
Jul 04 2019 3:28pm
Forum: E-Bike Technical
Topic: Bafang G3xx series high reduction ratio geared hub motors
Replies: 55
Views: 4835

Re: Bafang G3xx series high reduction ratio geared hub motors

Justin, do you usually refer the winding turns back to the known labeling for the bafang cst, or something else? No, not at all. The winding turns would hopefully be written on the actual motor stator when you open it up, at least that's been the case from what I've usually seen. There is no reason...
by justin_le
Jul 04 2019 3:11pm
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 680039

Re: Cycle Analyst V3 preview and first beta release

Btw, as you wrote that: Is there a planned feature list for new firmwares? Is CA3 still developed? Yes, there is definitely ongoing development going on with the CA product line, but some of this has switched track to being more hardware related rather than firmware related which I'll be posting ab...
by justin_le
Jul 04 2019 7:18am
Forum: E-Bike Build Threads / Photos & Video
Topic: Introducing the Electrom
Replies: 98
Views: 12815

Re: Introducing the Electrom

Would there be a way to close the loop by adding PAS (/encoder/resolver/etc) to take pedal position into account to make controllers regen input variable, so the deadband would require less torque to overcome? Yes, most definitely if you're up for a custom electronics control project. In any higher...
by justin_le
Jul 04 2019 6:57am
Forum: Items for Sale - New
Topic: Compact Field Oriented Controller, ASI + Grin, limited run
Replies: 1202
Views: 203889

Updated V1.1 Phaserunner software to test, with Virtual Electronic Freewheeling

Hey everyone, we're getting very close to having a V1.1 release of the Phaserunner software suite ready to release. This can be downloaded for people to beta test from the following links: Windows Versions: https://www.dropbox.com/s/jojzx9fx1xodi8b/Phase%20Runner%20Software%20v1.1.0.exe?dl=0 MacOS V...
by justin_le
Jul 04 2019 5:41am
Forum: E-Bike Build Threads / Photos & Video
Topic: Introducing the Electrom
Replies: 98
Views: 12815

Re: Introducing the Electrom

So I understand the mechanical setup, but how do you use the motor as a generator, and how does it's output get turned into rectified current at a voltage that can charge the battery? I'll speak for Tig here since he came by the shop with the Electron a couple weeks ago. In the end he's got it setu...
by justin_le
Jul 04 2019 5:26am
Forum: E-Bike Technical
Topic: Bafang G3xx series high reduction ratio geared hub motors
Replies: 55
Views: 4835

Re: Bafang G3xx series high reduction ratio geared hub motors

I plotted a ride out the other day https://i.imgur.com/srt4AOF.png It's a bit of a mess, data is out of Strava visualised over the trip sim of the same route. Trip sim obviously isn't the most accurate representation of real life, as it uses full power where it could not be used in real life etc, b...
by justin_le
Jul 04 2019 5:19am
Forum: E-Bike Technical
Topic: Bafang G3xx series high reduction ratio geared hub motors
Replies: 55
Views: 4835

Re: Bafang G3xx series high reduction ratio geared hub motors

After much waiting and back and forth I finally got some sort of information from gomax about the windings of the g360... Kind of. They wouldn't tell me anything related to windings or Kv and only asked what speed I wanted to go at each voltage and wheel size, That's pretty much how Bafang works. Y...
by justin_le
Jul 04 2019 5:10am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 680039

Re: Cycle Analyst V3 preview and first beta release

From reading the docs on Grin's website it looks like in version 3.0 we could set the AuxA->Function on a per preset basis, but not in version 3.1. Does anyone know why this change was made and is there any way to revert? There were a number of reasons for this but one of them came down to limited ...
by justin_le
Jul 04 2019 5:00am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 680039

Re: Cycle Analyst V3 preview and first beta release

Wow plenty of reading here! Just flashed last week 3.14 from 3.12 on my CA3 and got the max speed 654 a couple of times and not once...not a big problem. Yes, unfortunately this is a bug that seems to have slipped in undetected with the most recent release. It doesn't affect any of the average spee...
by justin_le
Jul 04 2019 4:52am
Forum: E-Bike Reviews & Testing
Topic: Cycle Analyst V3 preview and first beta release
Replies: 4483
Views: 680039

Re: Cycle Analyst V3 preview and first beta release

I did some more investigation and the sensor gives some strange readings. First of all it now shows 1.88V resting voltage and 20Nm w/o touching the pedals (where as it was 1.5V before). When i set sensor to "custom" i can reset the ZERO torque voltage, and then it shows 0Nm again. And when i ride i...
by justin_le
Jul 04 2019 4:05am
Forum: E-Bike Technical
Topic: Definitive Tests on the Heating and Cooling of Hub Motors
Replies: 2085
Views: 353140

Re: Definitive Tests on the Heating and Cooling of Hub Motors

to a maximum of 55-60 degrees on the covers after stopping after 10 minutes. Can anyone say approximately how much it will be on the winding of the motor, how far is the critical temperature? If you know the elevatation profile that you were riding around then you can use the nearest hub motor that...
by justin_le
Jul 01 2019 3:57am
Forum: Battery Technology
Topic: The Cycle Satiator, universal charger for the enthusiasts
Replies: 725
Views: 114248

Re: The Cycle Satiator, universal charger for the enthusiasts

i like to charge only to 4.1v each cell. but... settings for each program have the option to stop charging when setup amps are reached(dropping) As explained in the Satiator manual this setting only controls when the charger screen says "charge complete", it does not ever stop the output current wh...
by justin_le
May 31 2019 3:27am
Forum: E-Bike Technical
Topic: 2019 Motor Simulator, Mid-drives and other updates
Replies: 33
Views: 2229

Re: 2019 Motor Simulator, Mid-drives and other updates

wiht a 72v pack and 29" wheel (would need some kind of bolt-on adapter replacing the "rim" it comes with) teh simulator shows it could push me on my trike to 19mph on a 1% grade, and still stay just over boiling water temperatures. :lol: Even if you were going downhill on a -2.9% grade where the mo...
by justin_le
May 31 2019 2:56am
Forum: E-Bike Technical
Topic: Variable regen drag brake for tandem bike w CA3 & PhaseRunner
Replies: 15
Views: 526

Re: Variable regen drag brake for tandem bike w CA3 & PhaseRunner

Variable regen braking would be perfect for this application. I envision a small potentiometer (or perhaps a switched pot) that can be rotated up from its zero position to engage regen that is proportional to the pot’s position. Variability of regen is important to tune speed. After descent it will...
by justin_le
May 31 2019 1:59am
Forum: E-Bike Technical
Topic: 2019 Motor Simulator, Mid-drives and other updates
Replies: 33
Views: 2229

Bafang Wheelbarrow Motor

Another oddball motor from Bafang isn't even on their webpage but is something that fits an interest of ours is this geared motor designed for a wheelbarrow. Bafang Wheelbarrow Hub.jpg There are many times when we have customers trying to find a hub motor for really high torque and low speed applica...
by justin_le
May 31 2019 1:25am
Forum: E-Bike Technical
Topic: Bafang G3xx series high reduction ratio geared hub motors
Replies: 55
Views: 4835

Re: Bafang G3xx series high reduction ratio geared hub motors

The G370 is really interesting, has anyone tried it yet? You mean this little guy? G370 Disassembled.jpg Cutest hub motor on the planet I'd say. When I'm finished the testing on it I'll be posting the results in this simulator thread here https://endless-sphere.com/forums/viewtopic.php?f=2&t=100461...
by justin_le
May 30 2019 7:01pm
Forum: E-Bike General Discussion
Topic: Grin trip simulator core temp
Replies: 10
Views: 378

Re: Grin trip simulator core temp

Well it is called a "trip simulator" after all. :^) I know, one of my big regrets! The current name is indeed misleading for what my intentions are. I'm thinking to possibly rename it as "trip modeler" to avoid this. "Time domain EV simulator" doesn't have quite the right ring but would be more acc...
by justin_le
May 30 2019 5:43pm
Forum: E-Bike Technical
Topic: 2019 Motor Simulator, Mid-drives and other updates
Replies: 33
Views: 2229

Bafang D410 Scooter Motor

While bafang is mostly known for geared motors, they do have a few direct drive models for scooter wheels and I got my hands on a D410 in an 8" wheel. https://www.bafang-e.com/en/oem-area/components/component/motor/fm-d410250d/ Which is this one in the dropdown menu Bafang D410 8in Scooter.jpg Bafan...
by justin_le
May 30 2019 5:19pm
Forum: E-Bike Technical
Topic: 2019 Motor Simulator, Mid-drives and other updates
Replies: 33
Views: 2229

G360 vs eZee, MAC

With all this empirical test data and a nicely fit model we could get to the real point which is to compare the this new G360 to other motors in the same power class, and this is where things got interesting and a little bit disappointing. In order to facilitate doing those side by side comparisons,...
by justin_le
May 30 2019 4:43pm
Forum: E-Bike Technical
Topic: 2019 Motor Simulator, Mid-drives and other updates
Replies: 33
Views: 2229

Re: 2019 Motor Simulator, Mid-drives and other updates

Qwerkus, you jumped the gun on me! Anyways, onto the G360 motor performance. What I got was an 11T winding, which had a winding resistance of 79mOhm and a kV of 9rpm/V. Core Loss Data The no load core drag varies from 2-2.25 Nm at ebiking speeds, and doesn't increase too much with RPM which we can a...