Search found 1258 matches

by rg12
May 28 2020 6:06pm
Forum: Battery Technology
Topic: Creative Cooling Ideas?
Replies: 41
Views: 832

Re: Creative Cooling Ideas?

Generic data loggers Logomatic from Sparkfun https://www.sparkfun.com/products/12772 decent analog logger (8 channels) for $60, and can log to an SD card. https://endless-sphere.com/forums/viewtopic.php?p=1525900#p1525900 txt log files, open in spreadsheet to graph https://forums.adafruit.com/viewt...
by rg12
May 28 2020 5:55pm
Forum: General Discussion
Topic: M27 Thread Pipe Cap?
Replies: 18
Views: 164

Re: M27 Thread Pipe Cap?

You guys are geniuses!
Thank you so much :)
by rg12
May 28 2020 5:25pm
Forum: E-Bike Technical
Topic: Recommended Universal Display?
Replies: 0
Views: 21

Recommended Universal Display?

I noticed those nice looking universal displays on AliExpress that read battery capacity from the battery and speed from the phase. The thing is that the tire size can't be set, so the question is how can it work when one will use it for a 20" wheel and one for 29"? Any recommendations for a nice lo...
by rg12
May 28 2020 4:54pm
Forum: Battery Technology
Topic: Avoiding Rust on Sanded Cell Tips?
Replies: 1
Views: 35

Avoiding Rust on Sanded Cell Tips?

When harvesting cells and pulling off the nickel strips you sand the tips with a dremel usually and end up with a smooth surface for spot welding. The problem is for anyone who did this is that the sanded area rust super fast. Any idea how to avoid this? Any coat/galvanizing spray seems to add a coa...
by rg12
May 27 2020 5:01pm
Forum: Battery Technology
Topic: Creative Cooling Ideas?
Replies: 41
Views: 832

Re: Creative Cooling Ideas?

For me to forgive you, I would demand to know how you produce these awesome charts :lol: Unrelated indeed but super interesting! About power, yeah we all cross the 10kw here So yeah, they cook stuff easy with our hot ass weather. . I bet it is awesome though. I know some of yall go pretty hardcore ...
by rg12
May 27 2020 6:55am
Forum: Battery Technology
Topic: 25R B Grade Question
Replies: 3
Views: 104

Re: 25R B Grade Question

From what I have heard B grade is what is usually avalible to buy for the public. A grade go to manufacurers. But those B grades are not dented or anything like that. My sorce is just what Mooch have said or written. I heard that too but turns out that the ones marked B are all heavily dented (most...
by rg12
May 27 2020 6:53am
Forum: General Discussion
Topic: M27 Thread Pipe Cap?
Replies: 18
Views: 164

Most common M27 Thread Pitch?

I thought that there is only 2.0mm but turns out that there's 1.0, 1.5, 2.0, 3.0
by rg12
May 27 2020 12:20am
Forum: General Discussion
Topic: M27 Thread Pipe Cap?
Replies: 18
Views: 164

Re: M27 Thread Pipe Cap?

is this one of those k archer pressure washers, are you sure its m27 and not just a brass hose bib cap you need? https://www.bing.com/images/search?view=detailV2&ccid=Uhfbkl1p&id=F3AE425306E2541A57863360116446A94BC99798&thid=OIP.Uhfbkl1p6Ajl7ekksdw7twAAAA&mediaurl=https%3a%2f%2fi5.walmartimages.com...
by rg12
May 27 2020 12:03am
Forum: Battery Technology
Topic: 25R B Grade Question
Replies: 3
Views: 104

25R B Grade Question

Are all B grades marked with a B?
These cells in the photo are from a local seller that actually admitted to using this junk, first time I ever see B grades and they are 90% heavily dented (watch close to the bottom).
by rg12
May 26 2020 11:55pm
Forum: General Discussion
Topic: Weird Printer Offset (not color related)
Replies: 2
Views: 51

Re: Weird Printer Offset (not color related)

Ahh damn it it's in the software sorry!
by rg12
May 26 2020 5:09pm
Forum: General Discussion
Topic: Weird Printer Offset (not color related)
Replies: 2
Views: 51

Weird Printer Offset (not color related)

offset.jpg This is a sticker I place on an A4 sheet to print with my regular (not a special sticker printer) Samsung printer some text in the empty boxes. The thing is that the text printed in the 3rd box from the bottom is perfectly aligned vertically but the rest are off. The top boxes have the t...
by rg12
May 26 2020 4:31pm
Forum: General Discussion
Topic: M27 Thread Pipe Cap?
Replies: 18
Views: 164

Re: M27 Thread Pipe Cap?

Am desperate to find this! I have this water pump with a missing cap for the bottom pipe that comes out of it. It's a plastic pipe with an external thread that needs a cap with an inner thread, an M27 thread. I don't care if it's a plastic cap, brass or whatever, I just need the cap at any depth. i...
by rg12
May 26 2020 3:58pm
Forum: Battery Technology
Topic: Creative Cooling Ideas?
Replies: 41
Views: 832

Re: Creative Cooling Ideas?

the ATF is that Dexron?? I think Chrysler ATF would be bad for bearings? Bearings have seals. They are sealed cartridge bearings ( and rather large ones, might I say). I sealed both the flange, and the races, of the hub, and drilled out a brake bolt hole. Anaerobic Loctite and not a drop leaked yet...
by rg12
May 26 2020 3:49pm
Forum: General Discussion
Topic: M27 Thread Pipe Cap?
Replies: 18
Views: 164

M27 Thread Pipe Cap?

Am desperate to find this!
I have this water pump with a missing cap for the bottom pipe that comes out of it.
It's a plastic pipe with an external thread that needs a cap with an inner thread, an M27 thread.
I don't care if it's a plastic cap, brass or whatever, I just need the cap at any depth.
by rg12
May 26 2020 3:43am
Forum: General Discussion
Topic: Air Rivet Gun For Solid Rivets Question
Replies: 12
Views: 348

Re: Air Rivet Gun For Solid Rivets Question

I doubt it but I just ordered and will try and see. Probably a hammer will solve it if not. If for whatever reason you decide not to use a Knipex pliers to set rivets, you’ll come up with a hundred other uses for it. It’s my favorite tool for crimping cable tips in the shop, but it’s also my favori...
by rg12
May 26 2020 1:52am
Forum: General Discussion
Topic: Air Rivet Gun For Solid Rivets Question
Replies: 12
Views: 348

Re: Air Rivet Gun For Solid Rivets Question

Oh, now that I think about it I'm attaching two pieces of 0.8mm thick copper which probably is too thin for flush/double flush riveting, am I right? Yes. Given that the material is both thin and soft, I'd skip the rivet gun and use a Knipex parallel jaw pliers to squish the rivets. This will not be...
by rg12
May 26 2020 1:34am
Forum: General Discussion
Topic: Air Rivet Gun For Solid Rivets Question
Replies: 12
Views: 348

Re: Air Rivet Gun For Solid Rivets Question

Oh, now that I think about it I'm attaching two pieces of 0.8mm thick copper which probably is too thin for flush/double flush riveting, am I right? Yes. Given that the material is both thin and soft, I'd skip the rivet gun and use a Knipex parallel jaw pliers to squish the rivets. This will not be...
by rg12
May 26 2020 12:40am
Forum: General Discussion
Topic: Air Rivet Gun For Solid Rivets Question
Replies: 12
Views: 348

Re: Air Rivet Gun For Solid Rivets Question

I am just working on an airplane restoration and bucked a couple hundred rivets last week. The tips that go in the rivet gun are called rivet sets . These go against the factory formed head of the rivet and need to be the right size/shape for domed rivet heads. For flat, countersunk rivets you woul...
by rg12
May 26 2020 12:20am
Forum: Battery Technology
Topic: Samsung Ranking System?
Replies: 0
Views: 75

Samsung Ranking System?

I understand that there is Rank and Group.
As you can see one photo shows 40T Rank A Group A and 25R one box is Rank A Group F and the other is Rank B group F.
Can someone please explain?
8B3313A7-985B-420B-B824-5DB9FAFE0288_L0_001.jpg
8B3313A7-985B-420B-B824-5DB9FAFE0288_L0_001.jpg (172.05 KiB) Viewed 58 times
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554D40E9-3C75-49DE-B733-2408CAE06801_L0_001.jpg (192.83 KiB) Viewed 58 times
by rg12
May 24 2020 5:30pm
Forum: Battery Technology
Topic: Creative Cooling Ideas?
Replies: 41
Views: 832

Re: Creative Cooling Ideas?

Yes, new LG M50T 21700s. The Opus says around 4,800mAh and between about 60 and 120 mili-ohms. I would prefer lower internal resistance but it's not too bad. I'm going to do some statistics to see if any of the slots are giving results that differ too much from the other slots because I was expecti...
by rg12
May 24 2020 4:06pm
Forum: General Discussion
Topic: Air Rivet Gun For Solid Rivets Question
Replies: 12
Views: 348

Re: Air Rivet Gun For Solid Rivets Question

I am just working on an airplane restoration and bucked a couple hundred rivets last week. The tips that go in the rivet gun are called rivet sets . These go against the factory formed head of the rivet and need to be the right size/shape for domed rivet heads. For flat, countersunk rivets you woul...
by rg12
May 24 2020 3:48pm
Forum: E-Bike Technical
Topic: Anyone Tried These 80A Controllers?
Replies: 7
Views: 387

Re: Anyone Tried These 80A Controllers?

Maybe an obvious response but why not just get an 18 fet infineon or something? Or better yet stretch your budget and get an foc controller, these old trap controllers are not really efficient It's for my business for customers who want something cheap and simple. Those who can't afford buy an ASI,...
by rg12
May 23 2020 12:56pm
Forum: E-Bike General Discussion
Topic: Looking for This Universal LCD
Replies: 7
Views: 221

Re: Looking for This Universal LCD

have you tried contacting the seller? Yes, no reply, just got a link sent to me from a friend for this exact display so all solved. So share the wealth! https://www.aliexpress.com/item/32796221261.html Unfortunately all the color displays are for lead acid and only the ones with the black on white ...
by rg12
May 23 2020 7:09am
Forum: General Discussion
Topic: Air Rivet Gun For Solid Rivets Question
Replies: 12
Views: 348

Re: Air Rivet Gun For Solid Rivets Question

Electroddy wrote:
May 22 2020 6:01pm
While a hammer head would work, a bucking bar is the proper tool. If you are in the US, the best places for this kind of riveting tools are Aircraft Spruce or Wicks Aircraft supply.
Thanks alot :)
Do you have any idea on the tool head thing?
by rg12
May 23 2020 4:56am
Forum: Battery Technology
Topic: Creative Cooling Ideas?
Replies: 41
Views: 832

Re: Creative Cooling Ideas?

Thermoelectric Coolers (TECs) sound like what you remember. It's not a good solution because you need lots of power to run them and that will make your batteries generate more heat and defeat the purpose. There are Thermal Interface Materials (TIMs) which I am planning on using but more to equalize...