Yes I left the batt ground to the motor as it is, just peeled 1cm of insulation an soledered my own - onto it. And then splitted the + and left it outside with the - so I can connect the external one. I'm doing more in a DIY style and use a small piece of black american tape so hold it on the side.
I can use any external 36V battery. But I just reuse my old lipos from my model airplanes since I have a lot of them. I must have the original always on the bike because it sends a signal to the motor that the battery is there. Without it I would need to put a microcontroller to generate that...
The bike motor still thinks it's plugged to the original battery and it always shows a full charge if I use the external one, so I monitor the discharge myselt with a lipo buzzer. When the external one is discharged I stop and reconnect back the original one and drive with that.
Now I did it like I unscrewed the motor and pulled out my own cables with connectors where I can simply unplug the main battery(I just leave the ground) and plug my external battery basically directly to the motor.
Yes. It's not ideal connecting to the charging port.
First I did it connecting directly with a power resistor in line to lower the current.
Later I changed the resistors to a portable step-up charger from aliexpress.
But still it's not good because I think the battery disables charging when...
You'll need to change the chainring too if the chain is "sticking" on the bottom. The chainring teeth become hook shaped due to wear. It happened to me when switching to a shimano ebike chain. It's possible the kmc chain could be a better fit but I never tried. I just bought a spider and...
What exactly would you like to know? It's called bluetooth low energy(BLE). The chip inside the ride control is the Nordic nRF52832. You can find the datasheet by googling it.
I did it on the Fathom e+3. It can show the error red led if you hold the crank magnet over the same spot on the sensor for some time. But it doesn't affect anything and you just reboot the rideone and it disappears.
Sure. I went for a longer ride today and I can confirm it works perfectly well. I took many pics so you can get a representative picture on how it looks when it's mounted.
I think in the future, next year or so, I'll mount a 40t(+) chainring and possibly a different cassette that goes from 11...