Noob question thread! 2020_Summer

Okay, that’s perfect

Does polarity matter here for the antispark ?
If so, should the crimps face towards me like in the picture or should I flip the connector 180°

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Like dis

You’re good

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should try bolting the pulley onto the wheel while the pulley is pressed against the motor mount to align them. Try also rotating/switching wheels, and maybe look for defects in the pulley with a multimeter.

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Umm you suggesting there might be a short in his pulley? :thinking::joy:

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um hello im hi

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Nice to meet ya, I’m Marc

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I have an actual noob question-

When the cells get to 4.0V and my bestech bms starts balancing, my charger seems to shut off and randomly come back on for a moment.

My guess is that it is actually working and this is just a weird way the system is interacting.

Anyone can explain to me what’s up?

my charge port reads 40V where my battery is at 48V

WAT

Depending on the BMS, that’s normal. Basically the BMS stops the charger when one of the cells reaches the set balance voltage, then the BMS drains down that cell and once it’s drained enough, the BMS lets the charging begin again.

The cycle repeats until all the cells reach the cutoff voltage, then it’s done.

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it just seems to be happening somewhat violently for the charger, I checked and it is only outputting 50.1V

My charger/BMS is the same way. The charger’s fan kicks on and off, the whole nine. It’s normal.

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Haha I would much rather the fan run constantly, just the lights showing the power status.

Might be an interesting mod, prob not worth the effort.

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Hey all. I am having issues connecting the Focbox UI android app to my unity. I have a metr pro unity as as my BT module.

I originally tried to set up my board with android app and got the message “Could not read firmware version. Make sure that select port really belongs to the FOCBOX”.

So, I connected via usb and updated firmware and set up my board. I then tried to to connect via bluetooth again so that I could get my battery percentage readings. I got the same message. Anyone else had this issue?

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Can’t say I’ve had that issue. But honestly the unity metr pro has never worked for me. Pretty sure that’s my fault though. There is a metr pro specific thread that might be worth checking out.

Maybe lets ask @Skyart . I sent him my Unity with metr that definitely wasn’t working for me when I sent it to him.

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I believe I have that exact unity and metr module…

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Lol. Well should work then. But yeah I had issues that never got resolved but I also didn’t try very hard. It will work but idk how to make it work… I don’t care for the metr telemetry since I get telemetry on my remote anyway.

Make sure to update both firmwares on unity and metr pro. Also make sure the metr is plugged in correctly. You can also go into those threads and ask some of the metr gurus for help

I think that might have been it. First ride after battle hardening the stator went well, most of the noise seems to have gone away. I’ll do some more testing

hm-10 will still work with latest fw if you use the stormcore app if you use a iPhone. Just doesn’t work with vesc app.

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Does going 190kv to 170kv really cut off 6ish km/h??

15/72
200mm
2x 6374 170kv
10s4p liion / 12s1p lipo
Average 16Wh/km

Don’t be lazy use the calculator.