Search found 208 matches

by want to build
Sep 27 2020 1:13am
Forum: Battery Technology
Topic: how do you solder without seeing?
Replies: 13
Views: 230

Re: how do you solder without seeing?

ok but there must be a way to buy already sloted nickel 70 cell battery case holder

guessing where is the positive circle under is a weird technique i dont see myself doing . too uncertain
by want to build
Sep 27 2020 1:06am
Forum: Battery Technology
Topic: what is the consequence of non pure nickel
Replies: 28
Views: 659

Re: what is the consequence of non pure nickel

ok
the place i am in not is to look at your idea.

so is the name i can type to find those

how much are they what are their spec
by want to build
Sep 26 2020 10:29pm
Forum: Battery Technology
Topic: how do you solder without seeing?
Replies: 13
Views: 230

Re: how do you solder without seeing?

It was a bad joke. I remember welds being x-rayed, costly. To test welds you preform them on test materials and then pull them apart to see how the weld is doing. Then try to be constant. my question is not about solidity of the weld! it is about finding how can i aim straight on everytime on posit...
by want to build
Sep 26 2020 9:31pm
Forum: E-Bike General Discussion
Topic: which vendor sells pure oblique nickel strip trusted
Replies: 3
Views: 226

Re: which vendor sells pure oblique nickel strip trusted

howard85may wrote:
May 19 2020 10:19pm
I bought pure nickel from eBay seller metal-mass from UK. Tested it in salt water for >30 hours no corrosion anywhere. Ground into it with regular hand file.
hi how do you find a seller on ebay with his name?
by want to build
Sep 26 2020 9:15pm
Forum: Battery Technology
Topic: how do you solder without seeing?
Replies: 13
Views: 230

Re: how do you solder without seeing?

i imagine that you are making a joke cause i do not have ultrasound refraction reading equipment.

but if you want to help for real maybe you could tell me how you deal with it and the tab you use
by want to build
Sep 26 2020 9:09pm
Forum: Battery Technology
Topic: how do you solder without seeing?
Replies: 13
Views: 230

Re: how do you solder without seeing?

isnt it kind of risky ?

i mean there must existe a pure nickel tab and holder combo somewhere?
by want to build
Sep 26 2020 8:04pm
Forum: Battery Technology
Topic: what is the consequence of non pure nickel
Replies: 28
Views: 659

Re: what is the consequence of non pure nickel

hi tx for the image what do these 2 do? the second is a special container for 18650 right? It's a cell. Like an 18650 flashlight cell, but 25Ah. You don't have to weld it, because it has terminals that you can clamp to directly. Maybe you should do some reading. i search Threaded posts but there ar...
by want to build
Sep 26 2020 8:00pm
Forum: Battery Technology
Topic: how do you solder without seeing?
Replies: 13
Views: 230

Re: how do you solder without seeing?

You need to do some test tab welding and take pliers and see how strong the tab welds are. I have seen some strips with the slot you speak of and others without, you put one electrode on one side of the slot and the other electrode on the other side of the slot. Makes for a more secure weld. Hi i a...
by want to build
Sep 26 2020 7:59pm
Forum: Battery Technology
Topic: how do you solder without seeing?
Replies: 13
Views: 230

Re: how do you solder without seeing?

Balmorhea wrote:
Sep 26 2020 1:42am
want to build wrote:
Sep 26 2020 12:53am
OK... but how to you guys know that you are weldining all 4 points on the positive circle and not 3 on the positif and oups one on the negatif surrounding enveloppe.?
Oh, you'd know that right away.
do you mean it would spark for couples seconds?
by want to build
Sep 26 2020 7:33pm
Forum: Battery Technology
Topic: comparison li po li ion for trolling motor fishing
Replies: 3
Views: 120

Re: comparison li po li ion for trolling motor fishing

hun i never looked at 28650.
what made you choose these?
by want to build
Sep 26 2020 12:53am
Forum: Battery Technology
Topic: how do you solder without seeing?
Replies: 13
Views: 230

how do you solder without seeing?

hi i ask the community for if they know pure nickel sheet that fit the ebike case and holder but i received not answers... So... from what i understand , people use 7 or 8 mm 0.15 pure nickel strips. OK... but how to you guys know that you are weldining all 4 points on the positive circle and not 3 ...
by want to build
Sep 25 2020 11:19pm
Forum: Battery Technology
Topic: what is the consequence of non pure nickel
Replies: 28
Views: 659

Re: what is the consequence of non pure nickel

hi tx for the image

what do these 2 do?

the second is a special container for 18650 right?
by want to build
Sep 25 2020 11:12pm
Forum: Battery Technology
Topic: comparison li po li ion for trolling motor fishing
Replies: 3
Views: 120

comparison li po li ion for trolling motor fishing

HI

could someone estimate the price of those 2 options for a 100 amphour battery

how many 18650 would it take 4s?
by want to build
Sep 23 2020 11:41pm
Forum: Battery Technology
Topic: what is the consequence of non pure nickel
Replies: 28
Views: 659

Re: what is the consequence of non pure nickel

second language here
what is a tab in this universe ebike?


and is a threaded posts a conversation with a lot of answers exchange?
by want to build
Sep 23 2020 10:49pm
Forum: Battery Technology
Topic: what is the consequence of non pure nickel
Replies: 28
Views: 659

Re: what is the consequence of non pure nickel

welding is still less damaging than soldering isnt it .
what do you suggest than
by want to build
Sep 23 2020 9:41pm
Forum: Battery Technology
Topic: what is the consequence of non pure nickel
Replies: 28
Views: 659

Re: what is the consequence of non pure nickel

Hi youre examble is not so good cause of lots of factor mass and etc. anyways, a part from what you imagine do you have something to support this,? cause on the other hand lots of vid show that welding heats very little the cells. i appreciate your comment im just trying to rely on xp or facts.
by want to build
Sep 21 2020 9:52pm
Forum: E-Bike General Discussion
Topic: 2 Speed Xiongda hubmotor
Replies: 1604
Views: 214043

Re: 2 Speed Xiongda hubmotor

It's possible, but desn't make any sense at all. These motors have the advantage that they're small, lightweight and can produce a lot of torque with relatively low power by allowing the bike to run more slowly than a normal motor. Two Q128s would be the same weight, but would blitz a pair of Xiong...
by want to build
Sep 21 2020 9:48pm
Forum: Battery Technology
Topic: what is the consequence of non pure nickel
Replies: 28
Views: 659

Re: what is the consequence of non pure nickel

The moral of the story, for me, is that you don’t have to use flashlight batteries to power your e-bike. Somehow we knew this 25 years ago, but many of us have forgotten. im not sure to understand what you mean by that that you don’t have to use flashlight batteries to power your e-bike. Those 1865...
by want to build
Sep 20 2020 11:11pm
Forum: Battery Technology
Topic: what is the consequence of non pure nickel
Replies: 28
Views: 659

Re: what is the consequence of non pure nickel

Electrical conductivity and thermal conductivity in metals are closely correlated. The same qualities that allow you to resistance weld effectively cause, well, resistance. No big deal if you’re making a ham radio pack or a household powerwall, where energy content is much more important than power...
by want to build
Sep 20 2020 9:51pm
Forum: Battery Technology
Topic: what is the consequence of non pure nickel
Replies: 28
Views: 659

Re: what is the consequence of non pure nickel

Matador wrote:
Sep 20 2020 9:34pm
If we are at the point of talking about cells venting or leaking electrolyte, then you got bigger problems to worry about than your metal strips.
what do you mean by this comment . where does cell venting or leaking electrolyte comes from in this post?
by want to build
Sep 20 2020 9:24pm
Forum: Battery Technology
Topic: what is the consequence of non pure nickel
Replies: 28
Views: 659

Re: what is the consequence of non pure nickel

so is this exact
Any venting that a cell can potentially do will corrode the steel under the nickel plating.
Any fingerprints will corrode the steel under the nickel plating.
After corrosion starts, heat builds up in the area and more corrosion starts until it burns through.

?
by want to build
Sep 17 2020 12:10am
Forum: E-Bike Build Threads / Photos & Video
Topic: wich torq arm for this bike
Replies: 3
Views: 139

Re: wich torq arm for this bike

with or without the wheel in?

both sides on same picture? from under ?
by want to build
Sep 16 2020 9:57pm
Forum: E-Bike Build Threads / Photos & Video
Topic: wich torq arm for this bike
Replies: 3
Views: 139

wich torq arm for this bike

HI
i have a norco yorkville hybrid in aluminium taht dates from maybe 10 years i dont know.

i ll put a hub motor at the back wheel.

i search for a good bang for buck

what info do you need me to provide in order to give me good advice?

tx
by want to build
Sep 16 2020 9:40pm
Forum: E-Bike General Discussion
Topic: 2 Speed Xiongda hubmotor
Replies: 1604
Views: 214043

Re: 2 Speed Xiongda hubmotor

He may have really meant something more like "is this a good idea", when he asked if this was "possible." Which is a very different question, and one that comes up every once in a while around here, but unfortunately I have no links. Would the interesting thing about this motor be, that you could p...
by want to build
Sep 16 2020 8:39pm
Forum: E-Bike General Discussion
Topic: 2 Speed Xiongda hubmotor
Replies: 1604
Views: 214043

Re: 2 Speed Xiongda hubmotor

hi , dont take my answer for granted since i have not yet installed one but , i dont see what could block you from installing 2. the only thing is that you need to doouble check the width of front fork. mine could not accept it ... too narrow . What situation have you read that could block one from ...