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Re: new eZip motor

Posted: Jun 24 2019 9:31pm
by latecurtis
I just went back and looked at the terminal blocks. I did not understand what they were about but after looking at the pictures I see the screws so now it makes some sense to me.

I hope to get my storage here next month and order some new tips DA recommended so I can start soldering and shrink wrapping again so I can make professional looking plugs and adapters.

I will also need to start assembling large capacity packs with quality BMSs that have short circuit protection as well as low voltage as well as charge AND discharge balancing.

I would appreciate some links for BMSs which have all the features mentioned above or most of them. Defiantly short circuit protection.


I also am interested in knowing how many cells are recommended to be wired in parallel. I would like to order a lot of 100 or more cells which have been tested to 85 or 90% capacity and build a large 10S pack consisting of 30 or 40 cells. Will a 3P or 4P 10S pack work with a single BMS ?


I could use three BMSs - 30 cells each for a 90 cell 10S - 9P pack. That would be ideal for 40 mile round trips, Please let me know.


Thanks.



LC out.

Re: new eZip motor

Posted: Jun 27 2019 7:27am
by Sunder
I got this one working on the pack for my electric motorcycle a few months ago:

Image

https://www.aliexpress.com/item/3297624 ... 37adkd315I

It's a bit on the pricey side compared to a "Dumb" BMS, but it does everything, short circuit protection, charge protection (on a different line to the discharge, so it's harder to screw up).

Everything is programmable to the Nth degree, (configurable, rather, since no code is required), so if you want a long life out of your battery, program it to stop charge and balance to 4.0v instead of 4.2v. Got special cells that discharge safely down to 2.5v? Well, set cut off at 2.3 volt under load, and 2.51v at rest.

Get the screen as well - It will give you full detail on what's going on in your pack, and can be integrated with your controller to give you standard speedometer/odometer readings, etc. Real time power draw.

I know it's probably more than you wanted to spend, but as long as you look after it, it's probably the only BMS you will ever need, and you can carry it from pack to pack, if you make the connectors modular.

Edit: Link to the cheaper and smaller 8-24S version: https://www.aliexpress.com/item/3297417 ... 67f5O02ut7

Re: new eZip motor

Posted: Jul 10 2019 2:27pm
by latecurtis
As the Hub Motor Turns and the LiPo Fire Burns.

Wiped out again on the bike. Thought my shoulder was dislocated but just a contusion. Went to emergency room for x rays. Damage to rotater cuff. Will need MRI but tore that many times in the past lifting weights but not as bad.

Moved about 53 miles from motel to City of Canton. Population 80,000. Was riding 2.8 miles to Wall Mart and started raining and did not bring plastic to cover my electronics. Was looking for somewhere to get a plastic bag and cut across some grass by Auto zone and flipped the bike. Over handlebars and directly on my right shoulder.

Was only going about 5 mph but there was a manhole or storm drain about 4 or 5 inches below the grass but completely camouflaged as tall grass all around it. When I showed the lady who worked at Auto Zone I had to stare hard for several seconds just to see it. Almost invisible unless you are looking for it. She said it is the City. I said they need to put a red flag or a cone there. Someone will break their ankle or something for sure.

I went to the library and found a different way to travel to Wall-Mart and have been there twice since then with no mishaps. Again it was not my fault. Last winter it was a patch of Black ice and same shoulder. I believe serious permanent damage to right rotater cuff now and will need MRI and dye to document it for Social Security. I have a medical update for disability this year and have rotater cuff damage as well as Gout to add to my list of disabilities. Thanks.

LC out.

Re: new eZip motor

Posted: Jul 11 2019 1:41am
by tomjasz
Dude, seriously? Not your fault? You rode across a lawn, not a bike path... I found that if I take responsibility for my decisions I soon lose the aura of victim. Hang in there! Pain sucks! Glad to read it’s not more serious. That woulda trashed me for months.

Re: new eZip motor

Posted: Jul 11 2019 3:01am
by Sunder
My parents were sued by an old lady who claimed she tripped in front of our property. On advice of a lawyer, my parents offered her medical costs and one year of in home assistance to avoid a law suit. Came to about 100k aud, maybe about 70k USD equivalent.

She refused and put in a claim for 1.3 million. Good thing she called Saul Goodman. Their lawyer was not only a shonk, he was incompetent.

First claim was that we damaged footpath. Judge pointed out that footpath is council responsibility, irrespective of who damaged it, (otherwise we would have responsibility to repair, but no authority to do so) so case ajourned and the council is added as a defendant. We agree to split costs with council for a Queen's Counsellor (Most senior lawyer you can get, usually charge 8k a day)

QC argues that if she tripped on a footpath in broad dayligh, the danger was obvious, and she failed to take reasonable care of her own safety and therefore council is not responsible. Also shows photos of our "damaged" footpath, vs the rest of the footpath, and judge says if the photos weren't labelled, he couldn't tell the difference. Judge rules that as the damage is readily apparent and isn't all that severe, the plantiff is 100% responsible for her own injuries, dismissed the case and awards standard costs.

She appeals again, saying her lawyer misunderstood her instructions and she actually tripped over debris hidden in long grass that we left there. New judge is absolutely puzzled as to how that kind of miscommunication can happen, so our QC takes a different approach. Asks us to pay for a PI to film her doing thing she said as a result of the injury, she couldn't do. E.g she asked 1.3m for lifetime home care because she could no longer bend over to clean. Get a video of her bending over.

PI did an amazing job. The judge comments that she looks extremely fit and able for her age.

Our QC presses the case: This woman is a liar. She lied about where she fell, she lied about the impact. She didn't call and ambulance and didn't use her normal GP, she went to a GP family friend to write up the assessment of her injuries (PI found that too). Judge agrees and labels her a vexatious litigant. What that means is that she cannot bring us, or any other party to a civil claim, until her lawyer has laid the facts in front of a magistrate AND puts the estimated costs up as a bond before the case starts. Unsurprisingly, he also awards maximum costs.

So the woman now has gone from a position being offered 100k to being 280k in debt. (Those QCs are not cheap!).

Anyway, most of that story wasn't all that relevant. I just found it interesting the process the judge went through to determine whether firstly you took reasonable care of your own safety, and secondly whether there was negligence on behalf of who you claim is responsible. Yes, there is risk riding through long grass. But also yes, the council is responsible for mowing grass and marking hazards. In Australia at least, its possible partial compensation could be paid, depending on how much the judge though each party contributed to the accident.

Anyway LC, glad you are mostly ok.

Re: new eZip motor

Posted: Jul 12 2019 1:24pm
by latecurtis
I did not think it was a good idea to sue the city less than a week being here. The cops would all hate me and give me a hard time.

I was only hoping the city could mark such dangerous spots to prevent someone else getting hurt. It is no fun flipping a bike and damaging a rotater cuff which was already tore and damaged many times in the past.

I am seeing a doctor about this injury and will let him know how it happened. It should be brought up at a city council meeting though so such hazards can be marked but doubt it will happen.

Maybe if the mayors mother or aunt step in the hole and break an ankle or hip falling then it will be addressed. Nobody who runs any city gives a ratts ass about people from out of town unless they are a tourist spending big money. :(

Thanks.

LC out.

Re: new eZip motor

Posted: Jul 12 2019 2:12pm
by wturber
latecurtis wrote:
Jul 12 2019 1:24pm
It should be brought up at a city council meeting though so such hazards can be marked but doubt it will happen.

LC out.
Just send an email with a photo to the appropriate department. No need for a council meeting on something so basic. Or - novel thing - you could bring some clippers and just trip the grass yourself to help the next fella not hurt himself.

Re: new eZip motor

Posted: Jul 31 2019 3:38pm
by latecurtis
Thanks for posting. Good to hear from you.

Those holes are all over the city. My shoulder is healing up. I went to get an MRI done and it is a rotator cuff tear as I suspected.

I am going to the Ortho doc. tomorrow. I have been steering clear of that area where I got hurt as there is heavy traffic there. A lot of on and off ramps and intersections. With my luck I probably get run over going back there to mark the spot and if I did it would be removed when the city cuts the grass.

Hopefully I will be getting my stuff out of storage soon and should be back to building e bikes again. Thanks.

LC out.

8/3/19

Went to the ortho doc. He said shoulder needs surgery . Bad rotator cuff tears on two major tendons.
Was on my way to Wall-Mart and the bike kept shutting down and was close to full charge and less that a mile riding. Happened before and at least a couple times, I then noticed sparks coming from the kill switch. Very notacable when I switched it on after switching it off and checking connections. I saw Auto Zone and about a block after passing it did a U turn and switched off and walked a block there to replace the switch. No Spark now and good as new but for how long. Switch is rated for 420 watts and 35 amps at 12 volt. I need a 36 volt switch and should be rated > 500 watts as that is what the e bikeling motor is rated for.
Please let me know. Thanks

LC out.

Re: new eZip motor

Posted: Aug 12 2019 5:49am
by latecurtis
As the hub motor stops turning and the Lipo Fire stops burning.


E bikes are cool. But the fact is they are not practical. They are a calamity in the rain or snow. Most do not carry a second passenger. They do not have a heater in the winter or AC in the summer.

They are severely limited by battery technology so impractical for any significant distance.

I will really miss you all here on ES but the fact is I am buying a gas powered car. A Honda Civic four cylinder.

Not only did I hurt myself riding but was assaulted last month riding here in the City of Canton Ohio. I posted it then edited it out as was not relative to this forum. Besides a motor vehicles protection in rain and snow and creature comforts a car protects the driver/passenger from people with vicious or criminal intent.

I am a violent felon and not allowed to possess a firearm and riding around on an e bike with a sword or machete will either get me shot , arrested for manslaughter, or both.

To make it simple. I am much better off with a simple gas powered vehicle. I will most likely sell most or all of my e bikes and invest in good quality insurance and pursue my previous passion for car audio so doubt there will be any funds left over for anything e bike related. Thanks and goodby. I will truly miss you all.


LC out.

Re: new eZip motor

Posted: Aug 12 2019 4:54pm
by Sunder
The end of an era, hey... That's sad, but I understand.

I think you're wrong in one sense, but right in another. Ebikes are before their time. They are not practical - Yet. It's like taking that high tech 11:1 compression, high revving motor with a hybrid system back to the 1960s. It's superior to those big block V8 motors running 6:1... but in a time where nobody cares about efficiency or emissions, and when fuel quality is so inconsistent, you'll just blow up your motor and have people wonder why you bother with all this uneccessary complexity. It's solving a problem that people in the 1960s don't have, and don't understand yet.

Ebikes are like that now. Before their time, rather than not practical. They have benefits nobody wants, and they are a curiosity that just draws attention to you.

I think it's changing though. As hundreds of millions or BRICs Brazil, Russia, India, China citizens come out of poverty into middle class, the demand for cars and petrol will make it only available to the elite and the rich.

But enterprising people will build ebikes with panniers and windshields, and powered biker clothing will become more common and available. Combined mode transport, where you easily dock your bike onto a bus or train for longer trips and use it for the "last mile" ( or 5) will become common.

But... not for a while. Too long, in my mind. There's no commercial incentive to drive change while cars and petrol are cheap and convenient enough.

It has been a good journey LC. Frustrating at times, but encouraging, fun, and we got to know you as a friend online. Take care mate. I wish you all the best.

Re: new eZip motor

Posted: Aug 12 2019 5:34pm
by wturber
Sounds like you are substituting "car replacement" with "practical." Ebikes can be very practical. But they aren't nearly as versatile as the typical automobile. Because of that, they can seldom completely replace one.

I've replaced about 70-80% of my single person car trips with ebike trips and about 60-70% of my single person car miles with ebike miles in the last couple years.

I've had two Honda Civics in the past. They were very good and very practical cars.

Re: new eZip motor

Posted: Aug 13 2019 6:33pm
by latecurtis
As the Hub Motor Turns and the LiPo Fire Burns. I probably wont ever stop building e bikes. Maybe just slow down.

First off cars break down. I know I have been there and probably most of you all have broke down somewhere on the side of the road out in the middle of nowhere stranded. Not only can that be an inconvenience but also a life threatening situation.

The first thing I will do when I get the car is install a bike rack on the roof. I have two 20" BMX e bikes in storage. My next project will be converting one to a two passenger somehow. I have to think of the woman I am with. If we are stranded on the side of the road we both need a way back to civilization.

I need to have a rear seat I can bolt up to a strong reinforced bike rack and when I don't need the seat I can replace with a large cargo basket as I can ride the bike on nice days to the super market to haul groceries. This is most important and can even start the planning process now as I will have the car in 3 weeks and will be driving it on October third when I get auto and triple A insurance.

I will be driving to NY to get some of my storage. I hope to have a bike rack on the roof which will hold at least one and mabye two bikes. The emergency two seat will need to be 100% waterproof. Eventually all my e bikes will need to be 100% waterproof and many upgrades will be done.

I don't plan on selling any of my bikes and will be getting the rim on the 1,000 front direct drive Sunder sent fixed at an e bike shop in Akron as well as the 800 watt 20" rim. I will be working all winter on upgrading my 6 e bikes. I am still planning on a dual hub motor e bike with the 1,000 watt motor on the front and a new 1,000 watt motor on the rear with 2 controllers and a single throttle on a Schwinn Ranger by The Spring of 2020. I will need to build a 48V custom battery pack with 18650 cells.

First though I can use some tips on how to build a two seat bike for roadside emergencies. It will need a really strong rack which will support a 120 pound person for a 5 to 10 mph emergency trip and for non emergencies a rear basket for laundry or groceries as I want to save the car for when I really need it. I will reduce my carbon footprint and save money on car repairs , tires ect.

Thanks and please let me know.

LC out.

Re: new eZip motor

Posted: Aug 13 2019 6:54pm
by Sunder
I don't think any off the shelf bike rack would hold 120lbs. They're usually secured to the rear hanger, which isn't designed to hold that kind of weight.

I could be wrong though, because bike pegs do exist, and they are designed for teens who could hit that weight, but not my area of expertise.

You'd be better off getting a tandem, or a second bike.

With regards to waterproofing, I do have a 3D printer, so if you need to encase something and make it water resistant with grommets/cable entries and silicone, I can print off anything you need and mail it to you. (As long as you do the drawing - There's free software like www.tinkercad.com you can use).

Re: new eZip motor

Posted: Aug 14 2019 12:22am
by wturber
Sunder wrote:
Aug 13 2019 6:54pm

You'd be better off getting a tandem, or a second bike.
I'd throw a Free Radical Xtracycle conversion into the mix as a possibility. You can sometimes find used ones for a good price on Craigslist.

Re: new eZip motor

Posted: Aug 14 2019 3:58am
by latecurtis
I have to work with what I have. I will get steel bars, Nuts and bolts. Whatever I need to make it work. 120 pounds is maximum. She is about 110 and am looking at a bolt in banana type seat Actually the seat is all I will need help finding.

I am very familiar with flat steel bar at home depot and steel drill bits. It just has to be about double the strength as what I have already built. Pegs on the rear wheels and good tires and tubes.

What I am looking at with each build is upgrades. I miss working on them and the e bike workshop. I even built an awesome pack out of 18650 cells and even hooked a BMS. Would still be running if I did not hook up wrong. It was proven to be a strong pack.

I just need an alternate mode of transportation which is more mainstream and practical. A gas powered vehicle. That will cost money so any and all e bike related projects are on a back burner on low flame or life support for awhile. A few months at least. I will require a booming stereo in my new ride. That is never optional with me. Thanks.

LC out.

Re: new eZip motor

Posted: Aug 14 2019 11:12am
by wturber
... then do a search on DIY Long Tail Cargo bikes for ideas on how to extend a bike by adding the rear triangle to the back of another. Most of the simpler projects are essentially do it yourself Xtracycles. Be double sure that the bike is sound before giving others a ride.