Endless Sphere

That's usually a sign that the battery is failing and unable to keep up with the demands made on it.

I looked into it and the throttle tamer seems to be a mechanical thing that does one thing, which is damp the throttle. ZombieSS's throttle tamer wasn't mechanical, it was a little MCU-based device that could adjust throttle response; I can't recall everything it did (I have one here someplace), bu...

Haha... I love how this thread has got completely off-topic. I assume the moderators around here aren't too pedantic about this kind thing. ;-) The only thing we tend to be picky about is spam, and trolls. :) (and the occasional "impatient n00b" that posts a bunch of threads for the same ...

Without seeing a wiring diagram, pictures, etc., I can only guess that it sounds like the charger itself, or the charge port on the battery, is wired incorrectly (reversed wiring, for instance). Note that if you get smoke out of a device (the BMS? charger? wiring? can't tell from your description), ...

was able to pull the HSG, inverter, and lipo battery pack out of a kia optima before it hit the crusher. for $100 for all of it. besides the locals here, mostly kiwifiat and amberwolf (i believe) i can't find much information on how i can get this thing powered up without spending $1k+ for a contro...

What exactly are you trying to do, with what specific system / setup?

More details will help us help you.

I wouldn't mind at least trying to decipher the USB connect, but don't know if the programing is loaded, accessible, or maybe even in Chinese. :?: Any setup program is something you would need to download from the manufacturer website (unless the seller(s) have it available), or find as an app on p...

I've made a device called Throttle Master that can make a pot throttle work on a bike expecting hall voltage levels. It can also make a Hall throttle work on a bike expecting a pot signal. It can also change and modulate and smooth the signal in any way. It can also remap the voltages to anywhere y...

Sounds interesting, something like the ZombieSS Throttle Tamer. Is there a github repo (or similar) for the project? I have made a device called Throttle Master. Here is a small set of its features. It can convert a hall throttle to pot output. It can convert pot throttle to hall output. It can rema...

(for some people I know, the wall outlets actually need a self-resetting switch so that when a device is unplugged from it, it turns the outlet off, and requires you go somewhere else in the room where you cannot touch that outlet to get to the switch to turn it back on. )

One problem with diodes (and FETs, etc) is that a fairly common failure mode is shorted, both directions. (some resistance, but low). If the safe operation of a device requires the diode to block reverse current flow, and there is no fast-acting fuse present in the path to prevent that in the event ...

I use genderless Anderson SB50s, which dont' have easily shorted contacts.


But...if I had to use a connector that did have easily shorted contacts, I'd use the half that shielded them as best it could on anything with a voltage "always" present.

Truthfully, you won't know until it fails for how high a voltage it will take. ;) Keep in mind that you want to leave a margin, somewhere around 20%, for "random" voltage spikes during operation. If you push it to the edge, then one of those can just take it out at any time (usually blowin...

You could use a magnet ring that has more magnets. If you need something closer to 1/4 turn of the pedals before it starts, you would need 16 times the number of magnets it has already. How many does it have now? If the display has a setting for how many magnets the PAS sensor has, and it's not alre...

spongebob wrote: ↑

May 23 2022 4:29pm

I'm not sure what to make the walls of the battery box out of, aluminum sheet, fiberglass, steel sheet? Thoughts?

Fiberglass.

Then you can make it into the shape of Pikachu, and run your battery wires like this:

Will the thermal camera show you the *internal* stator-winding temperatures, thru the metal side casing that is blocking the heat from simply radiating away from those windings? My guess is that it won't--you will probably at best see a delayed heat transfer "image" (how long a delay I don...

The conditions for the test are locking the brakes up and giving it full throttle usually, only this time I didn't need to, because the throttle is so soggy and the 500w max is obvious. (It acts like it's in the 72v mode, so I'll check that out today.) I'll check the voltage sag too, but I have to ...

Standards are necessary for many industries to grow. There are standards on wheels & valves (https://www.parktool.com/blog/repair-help/tire-wheel-and-inner-tube-fit-standards) , BB (https://www.parktool.com/blog/repair-help/bottom-bracket-standards-and-terminology) etc. Also this ISO standard: ...

Great sounds, and definitely very film-appropriate! I've never done anything close to that standard! Thanks. :) It's not great, but it's listenable; I have fun making these, and I learn something new almost every "song". I do other more "traditional" styles like Caninical Hagiog...

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)....

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...

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...

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...

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...

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.