get away with it barely? or i should change it barely
also what size shrink wrap should i get for a battery 20cm long and roughly 20cm wide and 7.5cm tall?
thanks
@b264 i tried and it all gets hot very quickly. is that normal and ok or does that mean i should change it now?
thanks
If it’s silicone-insulated wire, it should be okay. I would not use plastic insulated wire for that.
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not sure how i would know
i have 2 bits of wire 24awg one gets hot and the other stays cool. not sure the difference between them
Silicon wire is very flexible and the strands of copper or tinned copper are very fine.
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its all flexible
the silicone one is still getting hot (not enough that it burns your hands but toasty)
that sounds terrible, get a new esc doe
Then redo it with a thicker wire… I am new to this as well. But I am using 10 to 16AWG for everything.
This says 24AWG is only good for max of 3.5amps: American Wire Gauge Chart and AWG Electrical Current Load Limits table with ampacities, wire sizes, skin depth frequencies and wire breaking strength
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This thread has some good intro info. Including some often used brands, and more details regarding lipo vs li-ion.
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@simeon @frame and any others who helped thanks so much
gotta my motor open
not sure what im looking for now to fix the issue though.
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In all 4wd lingyis I’ve seen there is no can bus connection plugged in.
They just use a remote that can connect to 2 escs simultaneously.
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What’s a safe operating temp for the motors and battery (via METR)?
Best to keep everything below 100°C max, preferred under 90°C
The motors may be able to get hotter but without specific information about your particular make and model of motor it’s hard to say
Im not sure if I helped anything, but check if ur shaft run true with the can?
Only the newer gen allows that, and I have a 4wd lingyi esc that has canbus connection.
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FS 6374 x2.
Even 90C seems like a lot, when the P42A cell data sheet lists 60C max discharge temp and the BMS temp probes are notoriously inaccurate.
But this is my first crack at data logging, so what do I know
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For the motor that could okay but I’d strongly urge keeping the pack under 60°C max and preferably 45°C if possible.
90°C is frakkin’ hot for a cell and will definitely cause damage. At around 75°C the electrolyte starts breaking down and other decomposition accelerates. The risk of the cell being forced into runaway rises a lot when you’re up at 90°C-100°C.
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I wouldn’t let the cells at the center of the pack (or whichever are the hottest cells in your setup) get above 60°C max. Keeping them below 45°C helps keep them from aging faster.
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This is going to be interesting this summer, when ambient temps regularly hit 38C. I’ll have to keep a close eye on the data logs
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