I've watched some of the Rich Rebuilds videos. I wouldn't characterize his style as being overly concerned with subtlety, care, or safety.
Some of the more scary points of the videos I watched: - Disassembly of the car involving a sledge hammer. - Dropping the pack to replace the contactors. Reassembly consisted of lowering the car on the lift down to the pack, without checking fine alignment. Of course, it wasn't aligned right, causing coolant to leak all over the floor, and who knows what other damage. I would actually like to have more people taking apart their Tesla, and learning how they work to help expand the knowledge base, but I've put those videos on my list of "what not to do". Unfortunately, this adds to the "another Tesla caught fire" swirl. Mike > On December 4, 2018 at 1:00 PM Damon Henry via EV <ev@lists.evdl.org> wrote: > > > I've never used a BMS on any of my setups. It's true that this presents a > risk, but knowing your battery chemistry and charging parameters can go a > long way... I have exploded batteries, but not in a way that a BMS would > detect. I did it the old fashioned way... ignite the hydrogen 😊 > > Damon > ________________________________ > From: EV <ev-boun...@lists.evdl.org> on behalf of Matthew Quitter via EV > <ev@lists.evdl.org> > Sent: Tuesday, December 4, 2018 9:30 AM > To: Electric Vehicle Discussion List > Cc: Matthew Quitter > Subject: Re: [EVDL] Tesla battery cells (no BMS) burst into flame... > > I still don’t know what actually caused the fault. > > From what I watched on the video and previous ones on that project they’re > still in the preliminary planning stages. It appears the pack was not > connected to anything, just placed in the car. Is that correct? > > Which would suggest it spontaneously failed - something I’ve never heard of > and tell customers never happens. Worrying as I have 10 Tesla Model S modules > sitting waiting to go into a couple projects! > > Perhaps there was a defect in the module? Or it was removed from its plastic > casing and rested against something conductive?! > > I would like to know what actually caused the initial failure before thermal > runaway. > > Matthew > > London Electric Cars > > > > On 4 Dec 2018, at 17:15, EVDL Administrator via EV <ev@lists.evdl.org> > > wrote: > > > > Not that I want to start an argument, but IMO those folks who say "I don't > > need no stinkin' BMS!" should be required to watch the hot action part of > > that video clip at least once -- just so they give it a little more thought. > > > > The "live ammo" question from the firefighters is telling. It DID look and > > sound like that. There's a spectacular amount of energy in those little > > lithium cells, and it can do unsettling things when it's released all at > > once. > > > > David Roden - Akron, Ohio, USA > > EVDL Administrator > > > > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = > > EVDL Information: > > https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.evdl.org%2Fhelp%2F&data=02%7C01%7C%7C0ac2946696114272173308d65a0e2a79%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636795414215041255&sdata=1OX8Qxg2aifbfbvfZ%2Fgu1TdZs8Ht%2BIC8dRZ8mDp8e0w%3D&reserved=0 > > = = = = = = = = = = = = = = = = = = = = = = = = = = = = = > > Note: mail sent to "evpost" and "etpost" addresses will not > > reach me. 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