Search found 31873 matches

by amberwolf
May 16 2022 10:13pm
Forum: Motor Technology
Topic: Looking for suitable controller, help wanted
Replies: 6
Views: 84

Re: Looking for suitable controller, help wanted

Note that it's specs say rated current is only 15A, max is 30, so as long as you aren't needing to use it at 30 all that much and mostly at the 15A range that would be ok. If you really need higher continous usage power, you might need a slightly better controller. (this one might get hotter than it...
by amberwolf
May 16 2022 10:05pm
Forum: EBike Non-hub Motor Drives
Topic: State of the hackable motor
Replies: 3
Views: 111

Re: State of the hackable motor

The amateur machinist in me wonders what the breakage mode is - whether it's shearing, cracking at a stress riser, etc. Most likely primarily stress riser cracks propagating thru; the ones I have seen pics of here on ES look lke spirals or diagonal fractures along the length; it's because it has ho...
by amberwolf
May 16 2022 9:56pm
Forum: Motor Technology
Topic: Large diameter direct drive hub motors
Replies: 13
Views: 2044

Re: Large diameter direct drive hub motors

For a hubmotor in a wheel, suspension or not, heavier generally means a harsher ride. Heavier doesn't mean better (either better suited or better quality), either, or even more powerful. It might be either of those, but no certainty just because it's heavier. Because of quality / manufacturing issue...
by amberwolf
May 16 2022 9:34pm
Forum: EBike General Discussion
Topic: 52V battery now 20V - dead?
Replies: 8
Views: 139

Re: 52V battery now 20V - dead?

The BMS has a row of wires out to the cells, and testing those I get a sequence from the 0 to ca. 48V, incrementing by ca 3V each connecting point. Starting from the pin that's towards the bottom here. 20220516_165307.jpg So if there's a problem with any of the cells, it isn't obvious. I count 16 p...
by amberwolf
May 16 2022 8:56pm
Forum: Motor Technology
Topic: Looking for suitable controller, help wanted
Replies: 6
Views: 84

Re: Looking for suitable controller, help wanted

I assumed lights would be common since every e-bike is already using a large battery. I don't need anything fancy, I would simply rather run a headlight and tail light off my battery instead of having to charge them separately. It would be nice if they were common, but they're not nearly as much as...
by amberwolf
May 16 2022 8:15pm
Forum: Motor Technology
Topic: Looking for suitable controller, help wanted
Replies: 6
Views: 84

Re: Looking for suitable controller, help wanted

Kelly does have software for thier controllers; I think Fany there is the most common technical contact for questions about that. The software does have quirks and may take some work to learn and get setup for your system. It's likely you'll end up using hte software to get the motor to run correctl...
by amberwolf
May 16 2022 7:58pm
Forum: EScooters/EMotorcycles
Topic: Kuberg Cross Controller Help
Replies: 2
Views: 45

Re: Kuberg Cross Controller Help

What was the original controller current limit? Using one with the same should give you about the same performance. Some controllers have a soft throttle response, isntead of instant start; even with the same current/power it has a slower reaction; less "oomph". Most ads don't specify whic...
by amberwolf
May 16 2022 7:44pm
Forum: EBike Non-hub Motor Drives
Topic: BBSHD voltage?
Replies: 1
Views: 56

Re: BBSHD voltage?

Typically with any controller / display set that come in different voltage sets (rather than autoadapting, or having a menu or switch to select this), the battery meter and the LVC are set for one or the other; there's about a 4v difference between the two types (one cell's worth). Some also have an...
by amberwolf
May 16 2022 7:33pm
Forum: Motor Technology
Topic: How critical is magnet gap ?
Replies: 1
Views: 49

Re: How critical is magnet gap ?

I'm not sure how much of an effect it would have for the magnets to be slightly asymmetrical around the rotor; it should still run ok; might be noisier than normal, or it might use a little more power than usual. Just be sure to install them like the originals were, regarding polarity: If they were ...
by amberwolf
May 16 2022 7:22pm
Forum: EBike General Discussion
Topic: E-Bike Throttle, any suggestions for a good, cheap one?
Replies: 1
Views: 63

Re: E-Bike Throttle, any suggestions for a good, cheap one?

COT, cable-operated throttle, less than $8 on aliexpress for one; use whatever kind of cable-pulling mechanism you want on the handlebars to operate it with. I used to break the plastic crap all the time because I would hit a bump as I was holding it near or at the full throttle while accelerating f...
by amberwolf
May 16 2022 5:37pm
Forum: EScooters/EMotorcycles
Topic: help with diy electric moped
Replies: 6
Views: 138

Re: help with diy electric moped

And is there maybe a way to fool or disable the lvc, since the battery got its own management system? I'll also ask that the seller manufacturer, otherwise crack it open and take a look lol. There often is, but depending on the BMS's safety shutoff for your everyday LVC is pretty hard on the batter...
by amberwolf
May 16 2022 3:14pm
Forum: EBike Technical
Topic: Bafang torque sensing bottom bracket
Replies: 11
Views: 134

Re: Bafang torque sensing bottom bracket

It's possible that it is position/angle agnostic; depends on how it's sensor is designed to work, and that I haven't found any references for. Some use sensors embedded in the actual crankshaft (TSDZ2; weakens the shaft though); some use them in a "ring" on the crankshaft by the bearing, s...
by amberwolf
May 16 2022 3:03pm
Forum: EBike Troubleshooting
Topic: Pedal assist won't re-engage
Replies: 4
Views: 66

Re: Pedal assist won't re-engage

No problem; you do much better in English than many native speakers I know, and better than I can do in any other language than English. ;) Has this problem always existed, or did it suddenly start; if the latter, what specifically happened between the time it worked and the time it didn't? Sometime...
by amberwolf
May 16 2022 2:55pm
Forum: EBike Technical
Topic: Bafang torque sensing bottom bracket
Replies: 11
Views: 134

Re: Bafang torque sensing bottom bracket

One thing I need to know is if it is indexed on instillation is there a up and down? Do you mean for the connector, or for the entire BB unit? If the connector, the pinout appears to show an indexing mark. If the BB unit, the two I have experience with (THUN and TDCM) both have specific installatio...
by amberwolf
May 16 2022 2:51pm
Forum: EBike Technical
Topic: Bafang torque sensing bottom bracket
Replies: 11
Views: 134

Re: Bafang torque sensing bottom bracket

Thanks. What is conflicting about it? I only see one information set, the pinout, that appears to be self-consistent. :?
machanic wrote:
May 16 2022 2:08pm
The pinout link I hope. Great that worked.
by amberwolf
May 16 2022 2:49pm
Forum: Forum Rules and Features
Topic: Move to XenForo software
Replies: 217
Views: 15336

Re: Move to XenForo software

I thought I'd asked this already, but cant find my post (or any answer): Does middle-clicking (or ctrl-left-clicking) on a link, picture, thread, etc. still open that in a new tab (for browsers that already normally do this for the existing PHPBB ES)? I ask because it's the only useful way I've foun...
by amberwolf
May 16 2022 1:06pm
Forum: EBike Technical
Topic: Vent Hole to let Moisture escape
Replies: 17
Views: 375

Re: Vent Hole to let Moisture escape

(It's my understanding that over 100F, any moisture evaporates easily...) Over 100 C maybe, which should evaporate all water. :lol: About 80F (not C) water begins rapidly evaporating as it is a "chainlink" molecule. So at 100F it will rapidly evaporate, given a less-than-100% humidity lev...
by amberwolf
May 16 2022 1:03pm
Forum: Motor Technology
Topic: Battery voltage vs controller power
Replies: 4
Views: 136

Re: Battery voltage vs controller power

You could try doing the same but uphill (and if that isn't enough, carry extra weight with you).
by amberwolf
May 16 2022 1:01pm
Forum: Forum Rules and Features
Topic: Move to XenForo software
Replies: 217
Views: 15336

Re: Move to XenForo software

What do threads look like when reading them?

And pages like the Subscriptions (or wahtever it is called now) page?
by amberwolf
May 16 2022 1:00pm
Forum: EBike Troubleshooting
Topic: Problem with a new sensored and sensorless controller
Replies: 11
Views: 115

Re: Problem with a new sensored and sensorless controller

Ah; that makes sense. Thanks for posting the solution; others may be able to use it as well. :)
by amberwolf
May 16 2022 12:54pm
Forum: EBike Troubleshooting
Topic: Pedal assist won't re-engage
Replies: 4
Views: 66

Re: Pedal assist won't re-engage

What specifically do you mean by "approach a curb" and "after the curb"?

Do you mean riding up onto a sidewalk and then coming off of it, which would jolt the system mechanically?

Or something else? (if so, what?)
by amberwolf
May 16 2022 12:52pm
Forum: EBike Technical
Topic: Bafang torque sensing bottom bracket
Replies: 11
Views: 134

Re: Bafang torque sensing bottom bracket

What information have you already found? (with links, if possible)

This will help us help you without us having to do all the same searching (the less time we have to use for that, the more we will have to help you).
by amberwolf
May 16 2022 12:50pm
Forum: EScooters/EMotorcycles
Topic: Govecs GO S1.2 Service Manual
Replies: 1
Views: 31

Re: Govecs GO S1.2 Service Manual

Since I can't help with the documentation...can you take good clear pictures of the dashboard circuitry itself, making note of which connections / wires are not used at present? This may help us help you find the correct point to wire for battery meter. BTW, since the battery voltage is probably alr...
by amberwolf
May 16 2022 12:44pm
Forum: EBike General Discussion
Topic: 52V battery now 20V - dead?
Replies: 8
Views: 139

Re: 52V battery now 20V - dead?

This usually means the BMS has shut off it's output and input, so the voltage you see on there is a "ghost" voltage; any load on it would drop it to nothing. This could be a bad cell that's gone lower than it's safety LVC, or a broken-off sense/balance wire. You'd have to open it up to che...
by amberwolf
May 16 2022 12:25pm
Forum: EBike Technical
Topic: Uu motor FOC controller for ebike?
Replies: 2
Views: 66

Re: Uu motor FOC controller for ebike?

Most controllers are not waterproof (no matter what they tell you on the sales site ;) ); unless they're potted and sealed like the PR, water can usually get in there one way or another. Mounting in a box...remember these things get hot, so they need ventilation, or heatsinking to the outside air wh...