Noob question thread! 2020_Summer

I believe the group buy has already be done

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are regular motors waterproof? can i jetspray my board

If you’re not using the sensors, they kinda are, yes.

If you are using the sensors and you haven’t waterproofed the sensor board, then no.

i mean the enclosure is sealed pretty good, im more worried about everything outside it

I am only talking about the BLDC motors, to be clear. The enclosure obviously depends on how you did it.

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Also if you assembled the motors this way, they will resist water much more.

i mean water is guaranteed to enter the holes if i spray it, i just wonder whether that would break them or make them rust

Water can reduce the bearing lifetime but otherwise shouldn’t affect the motor. Unless you are using the sensors and didn’t waterproof them. In that case, it should be okay if it dries completely before being powered or turned, but I can’t guarantee that.

And of course I’m talking about water or soapy water, definitely not brine or anything like that.

so i can dunk this bad boy in water?

fr i have wasted so many napkins on my board

The sensors aren’t going to work after you’re done, but you don’t need those either as long as you can kick-push or hip-flick.

Water doesn’t seem to hurt the rest of the motor, although it accelerates bearing aging.

Take a look at this video, the motor is underwater so it doesn’t get too hot.

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Hello! I’ve created a diagram detailing how to wire my components. Can someone confirm that i won’t blow myself up? And what would you do differently?

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B0 goes to B-

B1 is 4.2V higher than that
B2 is 8.4V higher than that

B12 is 50.4V higher than that

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The fuse needs to be on the charge port, not separated by a connector.

Nevermind, that “18AWG” is a label, not a connector

As designed, it looks like it would function, but I would add a loopkey to the circuit as per here

You don’t have to pull the loopkey if you’re using the Unity switch. It’s still good to have, and if the switch ever died, your skate would still work fine without repairs.

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Is my labeling wrong? I meant B1- as in the negative terminal of p-group one.

Its not wrong. It’s just B- goes with B -1 on the same negative terminal. It looks fine. But a second advice is good.

It’s not “wrong” but most BMS I have seen use this

And so that would be called B0 or B-, and definitely not B1 or B1-.

So yeah, kinda. But there is no “wrong” here. Some things will work and some won’t, but I don’t think there is a rigid standard of labeling here.

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Anyone have any idea what the speed / power graphs look like for the motors we generally use? (~6374 size) If anyone actually has a graph, I’d be interested in one for a ~190kv motor.