Search found 62 matches

by ossivirt
Jan 26 2020 4:05am
Forum: E-Bike General Discussion
Topic: Another Stealth bomber (clone) build
Replies: 259
Views: 34844

Re: Another Stealth bomber (clone) build

Hi shortcircuit911 It's been long time since and I feel sorry for what happen to your bike and hope you will be back with your bike. I ordred the DNM USD 8 for ½ years ago at EM3EV but didnt have time to assemble it. Now I'm starting to assemble the forks on it, but it looks so wrong. Just checked ...
by ossivirt
Jan 26 2020 3:38am
Forum: Items for Sale - New
Topic: QS MOTOR,0.5-14kW Electric Hub Motor Manufacture China
Replies: 1314
Views: 253076

Re: QS MOTOR,0.5-14kW Electric Hub Motor Manufacture China

https://sc02.alicdn.com/kf/HTB1I2vHiRjTBKNjSZFN761sFXXat/202837003/HTB1I2vHiRjTBKNjSZFN761sFXXat.png 3. Package For front & rear wheel, we will new carton package 57*57*25cm for each (no need wooden support now). From qs site. This is how they sent motor with laced rim. I got mine 2years ago like t...
by ossivirt
Jan 21 2020 3:37am
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 1035
Views: 140542

Re: kWeld - "Next level" DIY battery spot welder

Silly question but has anyone made up their own supply pack for their kweld using 18650s? Will likely use a ~65AH car battery most of the time but it would be great to use them for a more portable setup. On another note, drew this electrode holder up for anyone that may find it useful, shaped to be...
by ossivirt
Jan 18 2020 8:25pm
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 1035
Views: 140542

Re: kWeld - "Next level" DIY battery spot welder

I'm set to 1000 amps...I think. =) That can't be adjusted, it's always the short circuit current that just happens. To check the actual reading, keep the foot pedal down after a weld. OK...what's the setting in the welder do? There's a setting for amps in there. Welder has setting to abort weldingp...
by ossivirt
Jan 16 2020 4:12am
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 1035
Views: 140542

Re: kWeld - "Next level" DIY battery spot welder

I welded 5 batteries with it in the last hour and I did around 4200 pulses at 10J which used 37Wh from a 2S 10Ah 130C graphene lipo. The electrodes didn't go past 45C with a rate of around 70 welds a minute, the lipo was around 30C, the 8AWG cables and terminals were around 35C, the mosfets were ar...
by ossivirt
Jan 13 2020 12:02am
Forum: E-Bike Build Threads / Photos & Video
Topic: Noob EEB Enduro Build
Replies: 87
Views: 9704

Re: Noob EEB Enduro Build

That style of brake rotor is very thick and makes it even harder to make wires fit. I took the "easy" way out and run my setup without real rear brake and have variable regen on rear brake lever. Most part its just like normal brake but it has just a little lag and it cuts out if battery is full and...
by ossivirt
Jan 05 2020 12:01pm
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 1035
Views: 140542

Re: kWeld - "Next level" DIY battery spot welder

Searching a bit more I discovered the exact unit in the picture posted by flashtel: On eBay. https://www.ebay.com/itm/Integrated-Hand-held-Spot-Welding-Pen-Spot-Welder-Automatic-trigger-Home-Use-DIY/402009868337?hash=item5d99a7c831:m:mdHw1HlIH_Ejthcn_yxsq2g They even have 3 colors to choose from. I...
by ossivirt
Dec 27 2019 4:08am
Forum: Battery Technology
Topic: Spot Welding Copper Strips to 18650 Battery Cells
Replies: 229
Views: 47613

Re: Spot Welding Copper Strips to 18650 Battery Cells

Is anybody selling .10 Copper strip to spot weld fuse with Nickle, sold in roll for like the Nickel is? Or must you cut your own? Lastly, anyone have any experience with Nickel plated copper for serial connections? Does is spot weld just as well as the Nickel Does? I have not seen anything that is ...
by ossivirt
Dec 26 2019 8:26am
Forum: Battery Technology
Topic: Spot Welding Copper Strips to 18650 Battery Cells
Replies: 229
Views: 47613

Re: Spot Welding Copper Strips to 18650 Battery Cells

Is anybody selling .10 Copper strip to spot weld fuse with Nickle, sold in roll for like the Nickel is? Or must you cut your own? Lastly, anyone have any experience with Nickel plated copper for serial connections? Does is spot weld just as well as the Nickel Does? I have not seen anything that is ...
by ossivirt
Nov 19 2019 1:25pm
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 1035
Views: 140542

Re: kWeld - "Next level" DIY battery spot welder

For average user high c-rate lipo in 3-4s is ok. Or if you don't have one you can take battery out of your car. You cant drive it anyway when welding :lol: I don't have clue how many welds 3s 5ah pack can do but when it is "empty" you can just take little recharge break.. BTW: If I use lipo with kwe...
by ossivirt
Nov 11 2019 9:21am
Forum: E-Bike General Discussion
Topic: Another Stealth bomber (clone) build
Replies: 259
Views: 34844

Re: Another Stealth bomber (clone) build

That sucks! This just reminded me to check my dropouts.. Any pics from dropout side? I bet its not in "like new" condition :roll:. Seems from the nut pic that it has been turning back and forth for some time but hard to be sure. QS axle should be strong but everything fails if it has regen and some ...
by ossivirt
Oct 21 2019 11:02pm
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 1035
Views: 140542

Re: kWeld - "Next level" DIY battery spot welder

I have an idea... I don't know if anybody has tried this or not. A bit of solder paste like this product from Kester. It's ground up solder into a powder mixed with flux in a syringe. It's commonly used for re-flow soldering SMD components onto PC boards. https://www.ebay.com/itm/Kester-EP256-Lead-...
by ossivirt
Oct 16 2019 4:05pm
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 1035
Views: 140542

Re: New welding metal

john61ct wrote:
Oct 16 2019 3:26pm
ossivirt wrote:If you feel like you need to. 2000 amps is the max allowed
Who regulates, in what jurisdiction?
Maybe allowed is wrong word but 2000 is the number in the manual. That is maximum that the unit is designed to handle.
by ossivirt
Oct 16 2019 12:18pm
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 1035
Views: 140542

Re: New welding metal

.15mm = 50 joules .3mm = 100 joules So I'm guessing I need 30-40 joules for the .1mm alloy. But then since it is part copper and SS...who knows! I've never welded .3mm before. It takes a lot of energy to get decent welds and even then they are not as strong as the .15mm welds. 50 joules and .15mm d...
by ossivirt
Oct 15 2019 1:58pm
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 1035
Views: 140542

Re: New welding metal

.15mm = 50 joules .3mm = 100 joules So I'm guessing I need 30-40 joules for the .1mm alloy. But then since it is part copper and SS...who knows! I've never welded .3mm before. It takes a lot of energy to get decent welds and even then they are not as strong as the .15mm welds. 50 joules and .15mm d...
by ossivirt
Oct 06 2019 8:00am
Forum: Items for Sale - New
Topic: QS MOTOR,0.5-14kW Electric Hub Motor Manufacture China
Replies: 1314
Views: 253076

Re: QS MOTOR,0.5-14kW Electric Hub Motor Manufacture China

It is also good to remember that every motor has rated power but you can depending of conditions run them much harder. Heat is the limiting factor. I have qs 205 50h 3000w hub and temperature is monitored by my controller and it has never cut off with 12kw peaks that I run. However at 12kw for a lon...
by ossivirt
Aug 26 2019 11:07pm
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 1035
Views: 140542

Re: kWeld -

john61ct wrote:
Aug 26 2019 5:29pm
A right size resistor to limit current?
Longer avg6 batteryleads and or smaller and worse connectors :mrgreen:. Not recomended mut if you keep them under max allowed lenghts if will loose some current..

Edit: meant 8 or higher awg..
by ossivirt
Aug 18 2019 10:55am
Forum: E-Bike Build Threads / Photos & Video
Topic: Noob EEB Enduro Build
Replies: 87
Views: 9704

Re: Noob EEB Enduro Build

If we are talking about the same thing, mine are on the outside of the swingarm.090E0963-D550-4531-A432-F673AE91E394.jpeg I have thouse like that too. I understood that he was talking about the little plates that come with motor and not thouse frame/swingarm parts. My mistake. And yes you can insta...
by ossivirt
Aug 17 2019 2:35pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Noob EEB Enduro Build
Replies: 87
Views: 9704

Re: Noob EEB Enduro Build

Can anyone please explain how to properly install a 5KW QS (205) on an EEB frame? It comes with two bolts and a rectangular piece on each side of the axle, but with both the rectangular pieces and the freewheel, it won’t fit. I don’t have a disk on yet either, I’m going to go get one today. I can m...
by ossivirt
Jul 22 2019 9:40am
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 1035
Views: 140542

Re: kWeld - "Next level" DIY battery spot welder

Will someone please be kind and explain why something like kSupply exists? Why can't i just connect an appropriate/cheap power supply up to 8.1v to the kCap? However 2s 18650 wouldn't work->4.2x2=8.4v? Because cheap powersuplies dont have current limiting system and will destroy thenselves because ...
by ossivirt
Jul 20 2019 3:31am
Forum: E-Bike Technical
Topic: EEB parts and support info
Replies: 55
Views: 5724

Re: EEB parts and support info

I've done it! I recently purchased a 3D printer and have designed a front fender mount for the Mudhugger front fender on the USD-8 fork. In my excitement to put it on and test fit it I didn't take any pictures of it fresh off the printer :P . Was using a fast print setting and a thicker layer heigh...
by ossivirt
Jul 03 2019 7:30am
Forum: Battery Technology
Topic: 18650 spot welding -how to- ULTIMATE REPOSITORY
Replies: 759
Views: 171409

Re: 18650 spot welding -how to- ULTIMATE REPOSITORY

Would such a 12v battery be enough for spot welding with kweld or maltronics? https://www.biltema.se/en-se/car---mc/mc/mc-spare-parts/mc-batteries/mc-battery-smf-2000029838 It looks like very tiny cm battery so maybe it can weld very thin nickel but it will be very hard for the battery. It is also ...
by ossivirt
Jul 03 2019 6:54am
Forum: Battery Technology
Topic: 18650 spot welding -how to- ULTIMATE REPOSITORY
Replies: 759
Views: 171409

Re: 18650 spot welding -how to- ULTIMATE REPOSITORY

Would such a 12v battery be enough for spot welding with kweld or maltronics? https://www.biltema.se/en-se/car---mc/mc/mc-spare-parts/mc-batteries/mc-battery-smf-2000029838 It looks like very tiny cm battery so maybe it can weld very thin nickel but it will be very hard for the battery. It is also ...
by ossivirt
Jun 09 2019 7:34am
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 1035
Views: 140542

Re: kWeld - "Next level" DIY battery spot welder

Okay how should I say.. First there's a touch with some sparkles after that there's a good weld with nickel plate melting, but at the same time liquid is coming out. :? *edit* also twice a small flame came out. That looks bad. Under 20J there should not be any burning or discoloration with 0.15mm n...
by ossivirt
Jun 08 2019 5:33pm
Forum: Battery Technology
Topic: kWeld - "Next level" DIY battery spot welder
Replies: 1035
Views: 140542

Re: kWeld - "Next level" DIY battery spot welder

Is that normal that the K-Weld can burn through the Battery that Electrolyte comes out? Probably Not. So has this happened to Someone else? New firmware versions have anti arc features that reduce the risk of puncture but it's powerful and capable device so with too much energy it melts through. Th...