holy fucking shit my board just caught fire

i haven’t noticed any drop in power on the D vs the Dx…

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The Stormcores use a unique DRV, at least compared to other VESCs. DRV8323RS for the 60D and DRV8353RS for the 100Ds. It’s a generation newer than the older DRV8302 (VESC 4) and DRV8301 (VESC 6). These chips are what actually turn on and off the mosfets, receiving instructions from the firmware on the STM32 chip. They also have a built in buck to provide power for the STM32.

But they have been sold out for a while now, especially the one that goes into the 100D.

The 100DX goes to 3x independent half bridge drivers and some other components to replace the DRV. It probably increases the BOM cost a bit to go this route, but the designer has more control and ability to tune vs an all-in-one chip like the DRVs.

The mosfets are similar on all 100D series. They vary a bit even on the same versions, but most have decent specs. It shouldn’t have a major impact on power, but the overall design / layout might if they are still tweaking it.

MakerX did the same thing with the D60 (DRVless) vs the DV6 (DRV8301) and Shaman with the little focer v3.

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Damn that’s crazy. After reading through some old threads seems like most of them went up due to firmware issues during initial set up and motor detection. Mines holding strong so far.

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Nice

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stormcore could probably do more amps but i feel like it would last longer setting the limit to 75

Shipping/duty fees to canada would be my guess? Maybe added cost for their own QC ? Warranty wise id guess $ / liability.

FTFY both perlite and vermiculite are commonly used in hydroponic systems to grow… tomatoes commercially, its a low waste medium for root balls.

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You are making it seem like I grow pot :rofl: I only have succulents which is the opposite of smokable given they’re mostly water (more so than other plants)

Does this mean that for PEV fires, if we had a large enough box/container with these granulates in and stored it in there, it would potentially be effective at controlling any battery fires?

I mean its definatly better than a fire in open air. If the box is fireproof the fire will eventually get oxygen deprived and die out. cells venting can still be quite volatile tho.

My former boss started a side hustle for huge blankets that is meant to cover cars/forklifts in case of battery fire. Probably doesn’t stop the fire but it keeps the gases and smoke from spreading initially and buys alot of time. Moving a flaming car is difficult xD

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I’m on the EUC forums and the idea of a charging/storage idea is always coming up with a few designs made. I don’t know much about batteries, but the issue that keeps getting raised is the need to allow venting so shit doesn’t explode

well, to allow venting you need to keep the vent on the cell exposed. We tend to weld over the vent in the DIY community so its not super safety optimal :stuck_out_tongue:

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comedy gold award

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you are making it sound like this would be a bad thing,with tiny hands all the buds would look huge !

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I had a roommate that grew succulents. He also liked to get high on mescaline and peyote.

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Waiting for an autopsy here… where are the pictures of the inside?

Damn, I have one from that exact same month- ‘ordered 9/8/21’

This guy makes MOSFETs in his garage- Semiconductor Fabrication Basics - DIY Homemade NMOS FET/MOSFET/Transistor Step by Step - YouTube

I find it perplexing why these things don’t fail on the first power-on. I’ve done some reading on catastrophic fet failure in brushed motor systems, and it’s kind of complex. Not nearly as much info on brushless systems.

"The cause of this failure is a very high voltage, very fast transient spike (positive or negative). If such a spike gets onto the drain of a MOSFET, it gets coupled through the MOSFETs internal capacitance to the gate. If enough energy gets coupled, the voltage on the gate rises above the maximum allowable level – and the MOSFET dies instantaneously. The process takes less than a nano-second! The initial spike destroys the gate-body insulation, so that the gate is connected to the body. Once that has happened, the MOSFET explodes in a cloud of flame and black smoke. We have one documented case where the battery wire worked loose, causing a spark. It must have been this that caused the gate breakdown for the explosion of flame and smoke did not happen until the battery wire was re-connected some time later! Which demonstrates how very difficult cause and effect can be to connect!

So where can such a spike come from? Electrical noise [or radio frequency interference – RFI]. The sparks that you see around the brushes of a motor are very good generators of wide-band electrical noise: check out this video to see it in slow motion. Motors are at their noisiest when regenerating as the resulting voltage can be significantly higher than the supply.
Here are some of the failure modes or causes that we know of

  • Avalanche failure
  • dV/dt failure (Motor brush noise)
  • Excess power dissipation
  • Excess Current
  • ‘Foreign’ objects.
  • Jammed (or blocked) motor
  • Rapid acceleration/deceleration
  • Short-circuited load
  • Defective battery"

I’d like to see all of the major Western esk8/PEV makers form an alliance/cooperative for part sourcing.

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Was it off, how long had it been since last use?
Any idea what caused it?

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Are these flaming stormcores the 60 volt version or the 100 volt version? Or both?

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The one in this thread looks like a Stormcore 60D+

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