Setting pole pairs in FarDriver controller.

The controller doesn’t care what pole pairs are, and you can set anything and the controller doesn’t careand will run fine. The controller merely uses pole pairs to report the correct rpm in the app.

All Fardriver come from the factory set at default 4 pole pairs. If its not at 4, someone changed it. If you buy a hub motor and fardriver combo, the seller should have paired it and set pole pairs.

Many Fardriver are missing some firmware, either due to lazy programming or limited space in the chip memory. So those with mid drive motors (less than 16 pole pairs) will notice that either their pole pairs are not accepted, or it is accepted (and changed dashboard RPM and RPM limits for the 3-speeds, but does not rescale RATIOS IN SPEED table.

Perhaps this is because a hub motor RPM and its tire outside diameter determines the actual speed of the vehicle, while a in runner (Mid-drive or differential type) has a chain, belt or gear reduction, so so they just leave all the RPM tables 0-9000 rpm.

For hub motors, most between 16 and 46 are supported, and will automatically rescale all the RPM settings for you.

4 pole pairs goes up to 9000 rpm
40 pole pairs goes to 900 rpm.

On my controller when I set pole pairs 3, 4 and 10, the analog needs on the tachometer matched motor rpm and digital readings, but for higher pole pairs like 20+ the analog needle reads like 4 pole pair.

My motor has 40 pole pairs so if the analog needle matched actual motor rpm on a 0-12,000 rpm tachometer then you would barely see the needle move.

Of course a real programmer would be able to rescale the tachometer RPM range to march the motor RPM range. The Ratio in Speed table rescales so the tachometer can too. Lol.

The main reason to set your pole pairs correct is so you don’t sound like an idiot when you post “Yeah, my QS 12” hub motor is running 7000 rpm, like a boss!!”. And they reply “Are you really that stupid? At 7000 rom you’d be pulling magnets out of your rear. Set your pole pairs correctly.”

But since the controller doesn’t care all, you can leave it at 4 pole pairs and just set every RPM based on the vehicle speed you want, and it will work perfectly. The nice thing is, if you ever do set the pole pairs (for a hub motor) correctly, all settings rpms rescale so all actual wheel rpm related settings stay the same.

It’s recommended you set this correctly first, after personally verifying your motor’s pole pairs.