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Learning how to build Lotus Seven replicas...together!
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PostPosted: November 20, 2019, 1:45 pm 
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Joined: March 19, 2011, 10:22 am
Posts: 1503
Location: Holden, Alberta, Canada
300D50 wrote:
Unplug NOW!

Lithium batteries on a NiCad/NIMH charger are really, really bad news...


That's correct. The NIMH charger is not smart enough to charge a Lipo, there's a good chance of a battery fire.
I've purposely punctured a 4 cell lipo battery, it auto ignited when the air hit the chemicals, burned super hot for around 20 minutes.

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PostPosted: November 20, 2019, 2:35 pm 
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Joined: August 27, 2005, 1:04 am
Posts: 1400
Location: Kamloops, BC, Canada
300D50 wrote:
Unplug NOW!

Lithium batteries on a NiCad/NIMH charger are really, really bad news...

I'll be doing a few supervised test runs while watching the current and voltage before ever letting them go unattended to see how they do. Thanks for the concern though. I'm not using LiPo's, they're just boring old lithium ions. I've been around lipo's long enough to know how volatile they can be, even got to see the remains of a guy's Jeep that burned up due to a suspected LiPo caused fire. And if the original charger won't cut it, I have other chargers I can use, they're just not quite as convenient.
Kristian

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PostPosted: November 20, 2019, 3:12 pm 
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Joined: August 11, 2013, 6:03 am
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Location: CNY
Lithium Ion is just as sensitive.

Unless they are LiFePO4 cells, you're playing roulette.


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PostPosted: November 20, 2019, 3:31 pm 
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Location: Kamloops, BC, Canada
Ok, good to know. I guess I'll be using a lithium charger for them. I though the lithium ions were supposed to be more robust than LiPo's, but I guess that's just because theyre in a metal case rather than a plastic envelope.
Kristian

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PostPosted: November 21, 2019, 1:05 am 
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Location: Kamloops, BC, Canada
Tried the NiCad charger with my home brew lithium battery, definitely a no go. I had my multi meter on it and watched as it was charging, it came up to 25.2 V and sort of backed off, but then started charging again. I chickened out and disconnected it at 25.3V, and modified my old broken charger so I can hook up my RC car charger that does LiPo's, LiIo, and LiFe batteries. It cuts back the current at full voltage so that it doesn't overcharge them. I also snagged a nice, compact, 6 cell lithium deawlt battery from the recycle bin at work today, just have to replace the cells in that one and I'll have 2 more batteries.
Kristian

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PostPosted: December 8, 2019, 12:28 pm 
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Joined: October 24, 2008, 2:13 pm
Posts: 4068
Location: Carlsbad, California, USA
Yesterday, it was rainy all day. It became time to take on some of those tasks I'd put off indoors. Not wanting to lose all my muscle mass as I age, it was time to put together this monster that I bought a few months back.
Attachment:
File comment: Power Tower
DSC05228.JPG
DSC05228.JPG [ 160.02 KiB | Viewed 8 times ]

It's an exercise piece that call the "Power Tower." You can do pull-ups, chin-ups, knee-up and dips plus pushups using the base handles. I surprised myself and can still do a few of each of those, but I'm way down from what I could do a few years back. At least I'm not starting from zero!

Cheers,

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Damn! That front slip angle is way too large and the Ackerman is just a muddle.

Build Log: viewtopic.php?f=35&t=5886


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PostPosted: December 8, 2019, 2:11 pm 
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Joined: July 17, 2008, 9:11 am
Posts: 5173
Location: West Chicago,IL
During this site's "lost months" I had queried our resident experts about moving some electrical boxes. Alas, all remnants of that discussion are now MIA. The project has been completed. I removed one dead-ended electrical junction box, moved and provided future access to a previously hidden junction box, relocated 2 outlets and a switch, relocated a phone line. I also added 2 dimmable LED pot lights. Unlike what I came across, all electrical work is now done in a proper, workmanship manner and "per code". Here is the final result:

Attachment:
File comment: Before pic showing 1970's décor (the house was built in 1987!
before.jpg
before.jpg [ 92.16 KiB | Viewed 4 times ]
Attachment:
File comment: After Demo of cabinets and glued-to-the-drywall laminate.
During.jpg
During.jpg [ 71.21 KiB | Viewed 4 times ]
Attachment:
File comment: Now, a more contemporary (I hope) look.
after.jpg
after.jpg [ 77.58 KiB | Viewed 4 times ]
Attachment:
File comment: Hidden on back wall of LH bookcase in lower RH corner. No visible hardware holding it in place.
access panel.jpg
access panel.jpg [ 24.99 KiB | Viewed 4 times ]
Attachment:
File comment: Opens with no tools, Lift panel, tilt bottom edge out and lower.
access panel open.jpg
access panel open.jpg [ 34.38 KiB | Viewed 4 times ]

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