Search found 31917 matches

by amberwolf
May 23 2022 12:47am
Forum: EScooters/EMotorcycles
Topic: Reset cheap Chinese controller
Replies: 3
Views: 57

Re: Reset cheap Chinese controller

If you're willing to open it up, you could check for broken wires, or wires connected to the wrong places. (for the latter, you'd have to compare to the working one, and I don't recommend opening that just to check things out because there is always a risk of breaking something, or ESD damage, etc)....
by amberwolf
May 23 2022 12:42am
Forum: EBike General Discussion
Topic: Can I build an EV bike battery using Prius HV modules?
Replies: 7
Views: 55

Re: Can I build an EV bike battery using Prius HV modules?

Discharge rate of the batteries you can't really know until you know their capacity (assume they are half their original capacity, and just grin at any extra you get), *and* the actual power usage of your system in your actual conditions (which we can guesstimate, but it requires numbers from you to...
by amberwolf
May 22 2022 11:13pm
Forum: EBike Build Threads
Topic: APL's V4 Cruiser Build.
Replies: 177
Views: 8917

Re: APL's V4 Cruiser Build.

I added another B- plug that bypasses the BMS and shunt, so I can go either way, but it doesn't seem to make any difference yet. If it was a BMS issue, the BMS would shutdown power to the whole system. The list of likely issues you might have are, in no particular order: --battery sags in voltage s...
by amberwolf
May 22 2022 11:02pm
Forum: EBike Technical
Topic: The SB Cruiser : Amberwolf's 2WD Heavy Cargo Trike & Dog Carrier
Replies: 1049
Views: 194390

Re: The SB Cruiser : Amberwolf's 2WD Heavy Cargo Trike & Dog Carrier

In my experience, some tubes are just evil* and need to be cast away. Those tend to become tire liners, if they're thick enough. If not, they may become vibration padding in one thing or another. ;) But suffering the same conditions you describe (persistent leaks despite correctly mounting/dismount...
by amberwolf
May 22 2022 10:23pm
Forum: EBike Technical
Topic: Looking for a well-documented 36V, 250W controller
Replies: 7
Views: 176

Re: Looking for a well-documented 36V, 250W controller

I was hoping for a document laying out the controller's cables, including the purpose of each (e.g., + 5V, gnd, or "connect to speed potentiometer") , its color, and the connector type. Very very few give this info. Grin Tech at http://ebikes.ca has it for most of their stuff. It's the on...
by amberwolf
May 22 2022 10:03pm
Forum: EBike General Discussion
Topic: Can I build an EV bike battery using Prius HV modules?
Replies: 7
Views: 55

Re: Can I build an EV bike battery using Prius HV modules?

Now, before you decide which thing to build:

What kind of range do you need?

At what speed?

Under what riding conditions?

Those are going to primarily determine whether any of these things are practical for your needs.
by amberwolf
May 22 2022 10:01pm
Forum: EBike General Discussion
Topic: Can I build an EV bike battery using Prius HV modules?
Replies: 7
Views: 55

Re: Can I build an EV bike battery using Prius HV modules?

Regarding the kit, it's probably better than the typical gasoline engine kits; I see at least one rider with one of those on the side of the road in my area trying to fix something about the drive every week or two. I don't know what percentage of riders that is, but I only hear them a couple times ...
by amberwolf
May 22 2022 9:51pm
Forum: EBike General Discussion
Topic: Can I build an EV bike battery using Prius HV modules?
Replies: 7
Views: 55

Re: Can I build an EV bike battery using Prius HV modules?

The kit that I bought as shown in the file attachment, is for 36v at 450w. If each module is 8v fully charged and I connect four then I have ~32v so it seems fitting. But aside from that I don't know if I'd be able to connect it to my kit somehow using a BMS (Battery Management System) and any othe...
by amberwolf
May 22 2022 12:14pm
Forum: EBike Troubleshooting
Topic: IR Camera enough. Or thermal camera necessary?
Replies: 4
Views: 46

Re: IR Camera enough. Or thermal camera necessary?

Do you need to know it's operating temperature while in-use? If so, and you can open the motor, install a thermal sensor (usually a 10k NTC thermistor, often with beta of around 3900, like with the Cycle Analyst or various motor controllers that have thermal sensing built in). Or even an old BBQ gri...
by amberwolf
May 22 2022 12:06pm
Forum: Battery Technology
Topic: Where do you buy your batteries for ebikes for making cheap good batteries of 36-72 volts??
Replies: 3
Views: 61

Re: Where do you buy your batteries for ebikes for making cheap good batteries of 36-72 volts??

Depends on your definition of "good". If you mean one that provides the specified voltage and capacity, many do that...but they may either not provide them at the current-rates they say they can, or they may not provide long lifespan, etc. If you mean one that can provide everything the se...
by amberwolf
May 22 2022 11:46am
Forum: Battery Technology
Topic: Charging a 13s pack
Replies: 29
Views: 593

Re: Charging a 13s pack

The 50v ones near the FETs must not be on the main battery rail; they couldn't handle the regular 13s voltage much less anything higher (they would work for a 10s 36v battery). The biggest caps are 63v, and those are the main battery input caps, plus the one that's on it's side by the FETs; so they ...
by amberwolf
May 22 2022 11:42am
Forum: EBike General Discussion
Topic: 52V battery now 20V - dead?
Replies: 12
Views: 260

Re: 52V battery now 20V - dead?

There have been BMSs (especially in OEM complete systems, like whole bikes, etc) that do exactly that, to avoid the possibility of fire if there has been tampering, or if there has been an event where any cell went below the safe low voltage limit (not just the regular LVC), potentially making it un...
by amberwolf
May 22 2022 11:23am
Forum: Battery Technology
Topic: My first of several stupid questions
Replies: 13
Views: 174

Re: My first of several stupid questions

I'll be installing a smart BMS which might allow for some adjustment of the charge/discharge parameters. My thinking may be flawed, but I thought it would be best to look for a charger that isn't rated too low yet avoid one with excess amperage and having to totally rely on the BMS to reduce the ch...
by amberwolf
May 22 2022 11:14am
Forum: Battery Technology
Topic: My first of several stupid questions
Replies: 13
Views: 174

Re: My first of several stupid questions

Some notes: I can't do a complete analysis of the circuits on that board, especially because I can't see both sides so many traces are not visible, and a number of small transistor-style components' markings aren't visible, but the right half looks like a typical analog-type brushed motor controller...
by amberwolf
May 22 2022 12:08am
Forum: EBike Non-hub Motor Drives
Topic: TSDZ2 - Completely confused now..
Replies: 7
Views: 423

Re: TSDZ2 - Completely confused now..

Just to be clear--you have one working display, and three that have this problem? If it is a setting (I don't know anything about the FW / settings), then you should look at your original settings for your working display, vs the three that don't work. Alternately, if all three nonworking ones are a...
by amberwolf
May 21 2022 11:56pm
Forum: EBike Technical
Topic: PAS Levels Not Working
Replies: 31
Views: 486

Re: PAS Levels Not Working

Ahh so you're a musician too? I'm not sure "musician" applies; perhaps "composer" might; sound-musher could be more appropriate. :lol: I wouldn't say anything I do is great, but some of it is good enough to listen to. I use an ancient version of SONAR (was a prolific beta tester...
by amberwolf
May 21 2022 9:16pm
Forum: EBike Technical
Topic: PAS Levels Not Working
Replies: 31
Views: 486

Re: PAS Levels Not Working

It is pretty unlikely for the cadence sensor to fail (the TS is more complicated and more likely to have a failure....plus it is likely that the system requires both TS and C sensors to be outputting valid data for the system to allow the bike to operate (or at least not to provide any error message...
by amberwolf
May 21 2022 9:14pm
Forum: EBike Technical
Topic: PAS Levels Not Working
Replies: 31
Views: 486

Re: PAS Levels Not Working

I don't know anything about their software, but I have seen various devices composed of mulitple interdependent but separate units that have different firmware "version numbers" on each unit. Presumably there are different developers (or at least projects) for each unit (display, controlle...
by amberwolf
May 21 2022 9:05pm
Forum: Battery Technology
Topic: Best cell/pouch to use for more energy density
Replies: 6
Views: 299

Re: Best cell/pouch to use for more energy density

Any wattmeter that supports the voltage your system runs at (more than whatever the max full charge is, to give some margin), and that can handle the max current the controller would ever draw from the battery. Best is if it has a "memory" like the Cycle Analyst that doesn't erase itself w...
by amberwolf
May 21 2022 7:49pm
Forum: EScooters/EMotorcycles
Topic: Reset cheap Chinese controller
Replies: 3
Views: 57

Re: Reset cheap Chinese controller

There's nothing to "reset", AFAIK. The only settings it has are the learn wires; if you get no response from it using those, or the throttle, etc., then something else is likely wrong. Most commonly, either the keyswitch/ignition wire is not connected (usually to battery positive), or an e...
by amberwolf
May 21 2022 7:43pm
Forum: EBike Technical
Topic: The SB Cruiser : Amberwolf's 2WD Heavy Cargo Trike & Dog Carrier
Replies: 1049
Views: 194390

Re: The SB Cruiser : Amberwolf's 2WD Heavy Cargo Trike & Dog Carrier

Came out to the same tire being flat again this morning. :( Gettin' tired of this. Was a brand new tube and brand new tire; didn't even get a week out of it. Tried slime as a quick fix (don't like it but sometimes it works to get me somewhere till I can spend the hour+ to swap out the tube). No go. ...
by amberwolf
May 21 2022 7:29pm
Forum: EBike Technical
Topic: PAS Levels Not Working
Replies: 31
Views: 486

Re: PAS Levels Not Working

I tried disconnecting the TS today. As predicted - no assistance at all, regardless of the settings. So the cadence sensor isn't working at all. Or the system requires the torque sensor to be active for it to work, even if it is designed to be ignoring the readings in some modes, it might still req...
by amberwolf
May 21 2022 7:25pm
Forum: EBike Non-hub Motor Drives
Topic: TSDZ2 120mm Axle Broke for the 2nd time on my Fatbike
Replies: 80
Views: 10592

Re: TSDZ2 120mm Axle Broke for the 2nd time on my Fatbike

I don't know anything about cryogenic treatments of metals, so I can't answer that. But this shaft still has mechanical design issues creating stress risers. If you actually put a load on the cranks by really pedalling, and not just using it as a pedal-controlled moped, the stress increases and may ...
by amberwolf
May 19 2022 9:06pm
Forum: EBike Troubleshooting
Topic: Pedal assist won't re-engage
Replies: 9
Views: 126

Re: Pedal assist won't re-engage

Some hypothesizing below, since there isn't a definite specific failure these symptoms point to. It sounds like the controller is "going to sleep"; timing out, after those four seconds. There are systems that timeout after detecting no wheel movement for a minute or two, to save power and ...
by amberwolf
May 19 2022 7:34pm
Forum: Battery Technology
Topic: Two different lithium batteries in series?
Replies: 4
Views: 85

Re: Two different lithium batteries in series?

The lowest amps is the limit for the system, so you would need to decrease current draw to the lowest of the two; 70a in this case. If a BMS of a battery that is in series with another battery shuts down for any reason, it now has the full voltage of the entire system across it the now-open-circuit ...