new eZip motor

[markz]

So what is it now?
Back to lead acid batteries and a trailer?
Maybe some LifePO4 with threaded terminals after you sell your used LTO's?

 

[latecurtis]

https://www.youtube.com/watch?v=jYcYoXGY-2U


First I have to finish building the 6S - 5P pack. Then hook up 12S - 5P and run them to see what happens. They might work good. Only one way to find out.

I am never selling the LTOs. They go with the FX-75-5 motor and 28 kilowatt controller.

Another good reason for wanting to run LIFEPO4 on most of my e bikes is where I like to mount my batteries. on the top bar of the frame for better weight distribution but I am almost sitting on my battery pack. 18650 lithium ion can explode into a giant fireball like LiPo. LIFEPO4 will not. They will smoke a lot , worse case scenario. Not burst into flames and turn me into a piece of burnt toast.

If the LIFEPO4 pack fails I have the option of ordering two more boxes of LIFEPO4 as I seriously doubt I did any significant damage to any of the cells I soldered with the Weller. It is the first pack I am concerned about.

I need at least one good 12S - 5P LIFEPO4 pack for the Currie and the Diamondback Outlook with the two Bafangs. I will run the 13S - 20 Ah pack I bought from e bay until it quits with the 20" turbo and 800W hub motor. Not sure when or if I will replace that pack when it fails.

I was thinking about ordering brand new LiPo from Hobby King. However will not be mounting them on the top bar where if they turn into a fireball so will I. A rear rack is not a good option either as they could be on fire and would not know and then catch the back seat on fire. A front metal wire basket makes sense with a small onboard fire extinguisher. I could mount the fire extinguisher on the top bar and if I see smoke or flames in my front basket stop and put the frocker out. That makes sense.

I could also mount LiPo or Lion in ammo box in the front basket but may need to order a larger basket than they sell at Wall-Mart.
If I order two 5S - LiPo packs that will be 36V and run my Bafang motors as well as the Currie. As far as the 26" dual suspension 10S LiPo could run the Bafang on the front and those 13S power modules for the rear 48V hub motor.

So if I do not decide to sell off most of my e bikes then 10S - LiPo is an option but only if I can find decent ones that are highly recommended by members here on this post. I do not want cheap e bay junk like I bought back in NY a few years back.

I have the one 12V - lawn mower battery. Three more will be > 100 Ah so could hook up a LiPo charger to that for charging LiPo out in the van in that metal wash tub I posted a few posts back. that and keep them in the ammo box inside of LiPo bags with power and balance extensions. that is a very workable and safe method for LiPo or any volatile battery chemistry.

I got options and still plan on doing that even if the LIFEPO4 packs do in fact work good. The reason is LiPo takes up a lot less space. Even in a small ammo box. For the 26" dual suspension I will probably want a rear rack for the power modules which will add a considerable amount of weight in the rear. A front wire basket with 10S LiPo in an ammo box and my chain and padlock will work to even the weight and small fire extinguisher mounted to my top bar.

The fire extinguisher can serve another purpose. We got punks yelling out the window all the time looking for trouble. If I give them the finger they could turn around and come back. Then I can spray them in the face with the extinguisher and bash their brains out.

ou my friend need help don't feel isolated there's a large chunk of the public that feel disconnected from modern life, weed is no good i can tell you that from personal experience and from a friends perspective ive not seen anyone smoke weed and make them pro active its a fight any addiction is.

Weed is not addictive like heavier drugs but its still psycho active and over time changes who we are one drip at a time till there's a dark feeling over the body and mind of self destruction and that takes time in itself to heal.

Thanks for your concern but


I don't smoke a lot of weed. Some days none at all. I don't drink during the day either. I skip a night also sometimes or only have 5 or 6. I do not drink a 12 pack and smoke every night. I am not 20 years old. I do not have a problem with substances. I have a problem with punks running their mouths when they go by me in a car. My problem is with people. I deleted my Facebook account. My family back in NY are assholes and the two friends I used to hang out with will never move here and I am never going back.

The only place I may go back to is state prison or a mental institution for the criminally insane. It is just a matter of time before some young wise ass punk really pisses me off and I make them pay.

Thanks.

LC. out.

 

[markz]

Another good reason for wanting to run LIFEPO4 on most of my e bikes is where I like to mount my batteries. on the top bar of the frame for better weight distribution

better then what you were doing before, probably rear rack battery placement?

 

[latecurtis]

I am almost ready to do the series and balance wire connections for pack #2. The pack I did the recent videos on soldering.

Pack #1 was done two weeks ago and was a re solder deal. The first solder was with the cheap 60W iron and the cells were heated up a ridiculous long time. I figured at least a few of them are shot but did a voltage and iR test on them before re soldering them with the Weller and did not see any low voltage cells or really high iR measurements.

I did research and was told that a damaged cell would lose voltage over time. These are the measurements I just took from each cell bank with my best balancer.

I guess it could be possible that I shortened the life of some of the cells so may not get the full 5,000 cycles like I should get with pack #2 I did with the Weller but even if I get 3,000 or 2,500 cycles that is not too bad.

Looking at those numbers for each cell bank on the cells I soldered improperly and heated up I would like to hear everyone's opinion. I am almost done with pack #2 and will be running them in the next few days with the Currie and > 40 amps.

Please let me know.

Thanks.

LC. out.

 

[nicobie]

Don't ask us.

It's time for you to make your own decisions. Quit screwing around and get off the pot. Don't forget to wipe your ass.

 

[latecurtis]

It's time for you to make your own decisions. Quit screwing around and get off the pot. Don't forget to wipe your ass.

I hardly smoke.

Maybe a half a joint two days ago. I am straight most of the time. Also It is 100% legal here. I did not even drink last night,

If you do not like me or anything I do then why do you even follow this post.

It makes no sense.

The biggest problem with this post is almost everybody thinks they have to be right all the time. Everyone is a chief but no Indians.

Even Einstein and Steven Hawking were wrong once in awhile, I have posted video after video that 26650 cells are safe and can not start a fire or explode yet am told my battery builds are dangerous and should not post them as someone might get the wrong advice : but where is your proof ?????

My builds are dangerous yet I spent like $300 just on brake work this year at the local bike shop. Anyone can get hurt on a pedal or e bike no matter how good the bike is if they do really stupid shit. The biggest safety factor is the rider, not the bike.

I post facts not fiction. I do measurements for voltage , internal resistance and post high definition video of my battery builds and my e bikes actually going down the road. Yet most members here do not have one good thing to say about anything I do.

Almost every time I ride one of my e bikes I get asked if I can build one for them or can I sell them one. My answer is always no. I tell them to get a hub motor kit off of e bay and tell them about ES. I do not give out bad advice. I realize not everybody is like me and does things their way. Like chain drives and battery builds. Just because something does not conform to certain standards some people set does not mean it wont work or is dangerous. My e bikes work and I have built and run my own pack also before.

You think I will get discouraged and stop posting.

News flash. You are wrong, Not happening !!!!!

There are still a few members that I consider my friends like DA. and Markz. SUNDER don't post anymore and neither does DAN but there will be new members. They come and go. Maybe for those who never have a single positive thing to say , it is time to go. Trust me you will not be missed.

LC. out.

 

[nicobie]

:lol:

 

[latecurtis]

Basically the LIFEPO4 packs I built will either work or they will fail. There really is not much room for grey area.

What I do know is the second pack I did with the Weller wont fail. The frocking cells were barley warm after soldering them as I touched them.

Unfortunately I cant say the same about the first pack. Those cells were hot. Not too hot to touch but hot. Worse case scenario I will have to order more 26650 cells and do pack #1 over with the Weller.

Either way I will be pulling > 40 amps with My Currie with a 1,000W 36V brush on the back and 36V 350W Bafang on the front with 12S - LIFEPO4. It will do about 20 to 25 mph up a hill and close to 30 mph on the flat. The video will prove it. Then you can sit back and laugh all you want to but you will be laughing at yourself because you will be proven wrong. However probably will never man up and admit it. Not many people do.

I have admitted when I was wrong. I know I am not the smartest man in the world. However just like someone cant be right all the time I cant be wrong all the time.

I did two layers of liquid tape then thin strips of electrical tape and then more liquid tape over that. I triple checked each solder joint and not one is loose. Tomorrow when dry I will cut the 1/4" wood separators and gorilla tape each cell bank and connect in series with the balance wires and solder WITH flux. I will then insert tightly in the box like pack #1 and balance charge. After that a video will be posted with the Currie > 40 amps proving success or failure.

LC. out.

 

[E-HP]

It's time for you to make your own decisions. Quit screwing around and get off the pot. Don't forget to wipe your ass.

I hardly smoke.

Maybe a half a joint two days ago. I am straight most of the time. Also It is 100% legal here. I did not even drink last night,

If you do not like me or anything I do then why do you even follow this post.

It makes no sense.

LOL, I thought the reference may have been to the saying "Sh#t or get off the pot"

You did say "I would like to hear everyone's opinion."

I'm picking up some good soldering tips from this thread :thumb:

 

[latecurtis]

I'm picking up some good soldering tips from this thread :thumb:

Well. more than half the battle or like 90% is the right tool for the job.

I thank Markz as well as DA. as they both said the Weller is the perfect soldering iron for doing cells as it has the extra large tip which heats up the solder. Not the cell. Also it heats up to the correct temperature. There is no guessing. That is the name of the game. Attaching a wire to a cell and when you wrap your hand around the cell it should be barley warm. If it feels hot then you are doing it wrong. Either too small of a tip or not proper temperature.

For years I was using cheap 30 watt irons with the thin tip like they sell in Wall-Mart and then got a 60 watt with adjustable temperature control. I would not recommend it for the negative side of an 18650 cell. Maybe the positive as the large tip on the Weller is difficult for small area. For the negative side of an 18650 cell and for all larger cells the 100W Weller with the large tip will get the job done in about 2 or 3 seconds. The cell should be barley warm.

To be totally honest though I do not recommend soldering 18650 cells. They are dangerous , can explode and or catch on fire. I did solder a lot of them and have a bunch but am thinking about getting rid of them. 26650 is very safe. Wont blow up or catch on fire unless you put a butane torch on it and heat it up to 1,000 degrees. Then it might burn for a minute.

Most of the 18650 cells I did solder came from Battery Hookup and were 3S - 1p and used in a life vest which was a heart monitor. They were only used for like 1/2 or less their life span. Obviously they are cells with the built in protection. Beware of Ultra Fire and cheap Chinese 18650 cells. Those are the cells you hear about that catch on fire in hoverboards ect. Only high quality name brand cells should even be in your house. My cells are either Samsung or LG. I think a few Panasonic. Westinghouse which Wall Mart carry for solar.

If you watched some of my videos I test used 18650 for both voltage and internal resistance. Then label them when pairing them up. If you do build a pack for an e bike you do NOT want a bad / defective cell in parallel with good cells. Like the old saying "one bad apple can ruin the bunch"

I already soldered a bunch of 18650. Not sure if I will finish a pack or not. I do know I am recycling any cell that is under 3V or has a high iR reading compared to other cells.

I hope that helped you.

Thanks.

LC. out.

 

[E-HP]

I thank Markz as well as DA. as they both said the Weller is the perfect soldering iron for doing cells as it has the extra large tip which heats up the solder.

I think the key to the larger tips is that they can maintain the temperature that you want better than smaller tips that have less mass. If you try to compensate with a smaller tip, you need it to run hotter temps when soldering something that takes more heating energy (calories/joules) to get the solder to flow. If I try to solder large gauge wires with a small soldering iron, I have to turn the watts (temp) way up, and it still does a poor job, but lower watts take forever to get the wire up to temps for the solder to flow. Kind of like a cast iron pan vs a thin aluminum skillet.

My observations are anecdotal, but I like reading the more "scientific" explanations in this thread.

 

[markz]

Yeah its just like a pan when cooking

As soon as you lay a fish down on the pan
the pan cools down and it takes a long time for the pan to regain the heat that it lost

I remember seeing people on youtube with big hammer like tips on soldering irons for the exact same reason, the tip retains the heat.

https://endless-sphere.com/forums/viewtopic.php?f=14&t=5904&p=128005&hilit=hammer+tip#p128005

I assemble my cells end to end and solder them with the normal 60/40 solder using a 80 watt weller hammer head tip. I can usually assemble 20 cells end to end in about 15 minutes with all the prep work of sanding the ends of the cells and what not.

https://endless-sphere.com/forums/viewtopic.php?f=2&t=4097&p=61684&hilit=hammer+tip#p61597

https://endless-sphere.com/forums/viewtopic.php?f=2&t=359&p=4677&hilit=hammer+tip#p4677

https://endless-sphere.com/forums/viewtopic.php?f=14&t=51228&p=758538&hilit=hammer+tip#p758538

 

[markz]

Yes, its a good read but the novels and stories are quite long.
I prefer to read things that are to the point
Less fluff
More facts
Less stories
More on point
Less meander
More uploaded pictures

My observations are anecdotal, but I like reading the more "scientific" explanations in this thread.

 

[latecurtis]

https://www.youtube.com/watch?v=AC1kmmegr78&t=1s

end to end is great idea. I thought about PVC and did a you tube search.

I just figured why not a BMS.



Not sure if I will try it but is an idea.

A Maybe experiment.

 

[marty]

There are still a few members that I consider my friends like DA. and Markz. SUNDER don't post anymore and neither does DAN but there will be new members. They come and go. Maybe for those who never have a single positive thing to say , it is time to go. Trust me you will not be missed.

LC. out.

Dearest Latecurtis,
I would like to be your friend. Can I join your fan club?

 

[DrkAngel]

There are still a few members that I consider my friends like DA. and ...

Yeah .... everyone else will bitch and moan and groan and gaffaw, but when I do it, I call it "constructive criticism".

I do get frustrated, sometimes, at the futility of my advice being ignored, for months or years before LC finally listens, but I have the patience of a Saint, almost, I babysit grand kids and grand nieces and nephews from several wildly variant methods of child rearing. LC is good practice!

 

[latecurtis]

Dearest Latecurtis,
I would like to be your friend. Can I join your fan club?

yes.

Your name sounds familiar. I think I saw you post hear before.

I am hoping to get something done tonight. It was way way too hot today to do anything in the e bike workshop. I slept with the fan on high and the AC on 67 degrees until almost 8 PM. Just got back from the grocery store.

Since 2015 when I started taking blood pressure pills I have not been able to tolerate a lot of heat. Some people say it is from drinking but I drank more and more often like during the day before 2015. Now I drink after midnight until early morning and not at all during the day. I even skip some nights or only have a few.

When I started taking BP pills anything over 85 degrees makes me sick. 80 degrees is even uncomfortable ; especially when it is humid.

Thanks.

LC. out.

 

[markz]

I dont know what you call a "Workshop" its more like a closet.

Also is your "workshop" where your stash is?
What do they call that? Hot boxing I think the term is.

 

[latecurtis]

It is a walk in closet. This is a small attic apartment. About 400 square feel or less I think.

Hard to calculate. I tried with a tape. Think a little more than 400 if you count the hallway on the way up , closet and bathroom.

got 10,000 Btu AC but the closet is hot. So is the bathroom.

Did not get to the pack yet. Tomorrow I might have to sweat it out to cut the separators then build the pack out here by the fan with AC on high. Cant solder out here though. I hope this heat goes away.

Thanks.

LC. out.

 

[tomjasz]

It makes no sense.

 

[markz]

Airflow through the space is crucial.
Cheap $20 fans usually last a year or two if on 24/7
I havent used a window ac unit in a long long time, but central ac is worth it :thumb:

 

[latecurtis]

Yea it's small. We have lived in smaller though. We really need to save money before we move. We saved some stimuli's but I should not have ordered the LTOs or the 18650 cells. Just the LIFEPO4.

I put green tape on the series connection so I do not frock that up. I need to solder male bullets to the wires going to a female XT60 to hook to the male coming from the DC breaker and controller. I can use red and black tape so I do not reverse the polarity.

LIFEPO4 is way safer than 18650 cells and packs. I would like to sell all my 18650 cells and recycle all the old packs. I guess I will save the LTOs for the FX - 75-5 motor. It is basically why I ordered them as I have the motor and controller.

I need to work on the Currie tomorrow. I have to modify the top for two batteries boxes. There is just room for one now. The same with the 26" Diamondback Outlook. Then the Giant Roam. All three bikes have dual motors and 36V controllers.

After that I am done for a long time. I might order a BMS and get the power modules hooked up but as far as ordering anything more like motors or batteries it will be a long time. The Haro V3 and 3 kilowatt motor and sprocket will be next year. A mid winter project I can work on in January thru March. I am done spending money until next year.

Thanks.

LC. out.

 

[markz]

Floor looks dirty
Time to clean the "workshop"

 

[latecurtis]

As the Hub Motor Turns and the LiPo Fire Burns.



Getting ready to hook up. soldering is done. I painted the male bullet black for the hook up to the XT60. The plug will plug in to all my current controllers. I wired all my e bikes for XT60.

It will be dry when I roll out of bed so can do the thin strips. Yea that is a trademark as well. I like cutting a 14 to 16 inch strip electric tape in three. I then wrap that around wires that have been coated with liquid electric tape. If you study my methods you will see I am meticulous. That goes for building e bikes and batteries.

Wire wrapping is another skill I developed which is kind of unique. There is no reason to solder the 2" wires coming from each cell as they wrap about an inch and 1/4 around a straight strand of 16 gauge copper wire. Then a longer piece of 16 gauge wire wraps around all of that. three strands are good for 1,800W continuous. 2,400W peak. A single 16 gauge wire is 600W. I built these 6S - LIFEPO4 packs on that logic.

The pictures above are only 12 gauge wire though. Stil good for 1,500W. I got the 12 gauge wire from Wall-Mart. The battery wiring is for 10 gauge and 3 kilowatts However this 40V LIFEPO4 is not for the 3 kilowatt motor and controller. It is for all my 36V e bikes. I need to run some of them before winter.

As soon as I run the LIFEPO4 I will post a video.

Thanks.

LC. out.

 

[markz]

I tried painting the XT connector once
Paint always rubbed off though I used dollar store nail polish and was to lazy to try other paints from art store.

All XT's are all back ordered on Hobbyking
https://hobbyking.com/en_us/xt90-male-connector-w-100mm-red-black-wire-2pcs.html?queryID=2aa91ab890602d9279a63e0735aab472&objectID=84587&indexName=hbk_live_products_analytics
https://hobbyking.com/en_us/xt90-female-connector-w-100mm-red-black-wire-2pcs.html?queryID=2aa91ab890602d9279a63e0735aab472&objectID=84581&indexName=hbk_live_products_analytics