Search found 255 matches

by nuxland
May 24 2020 12:19am
Forum: Battery Technology
Topic: 30Ah 28s LiPo from 7s bricks
Replies: 43
Views: 3835

Re: 30Ah 28s LiPo from 7s bricks

Pack has now sat on balance voltages for a month. in 23th of april voltages were min: 3,830 and max: 3,836 so difference 6mV now today 24th of may there was min: 3,820 and max 3,826 difference still 6mV But discharge was 0,01V or 10mV in 30 days. And this was bms that was taking this :) So we can sa...
by nuxland
May 19 2020 6:09am
Forum: EBike Technical
Topic: Sevcon, subsidiary of Borg Warner
Replies: 15
Views: 849

Re: Sevcon, subsidiary of Borg Warner

Hey I do not like your tone :) but i have searched and here are my answers. I got license from this email <sh***ker@borgwarner.com> last time but in 2016 got it from here <****.conboy@sevcon.com> They each time asked from i have bought it and to what company i have bought it to also. I bought my IXX...
by nuxland
May 17 2020 1:50pm
Forum: EBike Technical
Topic: Sevcon, subsidiary of Borg Warner
Replies: 15
Views: 849

Re: Sevcon, subsidiary of Borg Warner

I'm not intending to upgrade my software because there is no need doing that.
they, is some guy in sevcon as i wrote email to my reseller when it first expired and they forwaded me to sevcon.

PS! i have replaced my laptop once in these years and they gave me license to the new laptop also.
by nuxland
May 17 2020 1:10pm
Forum: EBike Technical
Topic: Sevcon, subsidiary of Borg Warner
Replies: 15
Views: 849

Re: Sevcon, subsidiary of Borg Warner

I bought my IXXAT in 2015. And had to renew each year. As have not used it from 2018 i need to renew it again to be able to program some parameters in my kart. For the renew they did not charge any money but it's inconvient for me. And for a 600€ USB IXXAT device with a license I assumed I will get ...
by nuxland
May 12 2020 8:30am
Forum: Battery Technology
Topic: 30Ah 28s LiPo from 7s bricks
Replies: 43
Views: 3835

Re: 30Ah 28s LiPo from 7s bricks

I do plan to charge when arriving on track. As i also have lifepo4 packs then i can charge them previous evening. And then use my 3kw elcon charger to charge lipo on racing track. As i have already balnced them and have zeva bms units inside pack i can easyli charge them all to 4,15v (this is my bal...
by nuxland
Apr 10 2020 6:37am
Forum: Battery Technology
Topic: 30Ah 28s LiPo from 7s bricks
Replies: 43
Views: 3835

Re: 30Ah 28s LiPo from 7s bricks

Did a first charge and discharge test yesterday. [youtube]H8lBknp5E84[/youtube] It seems i need to charge them again to 4,15V and then use my iCharger 4010 Duo to top balance each parallel 7s group to 4,2v. When I thought it in my mind it did not looked so messy with the balance leads :) Only reason...
by nuxland
Mar 09 2020 8:42am
Forum: Battery Technology
Topic: 30Ah 28s LiPo from 7s bricks
Replies: 43
Views: 3835

Re: 30Ah 28s LiPo from 7s bricks

Weighted how heavy is battery box without batteries :)
WithoutBattaries.jpg
WithoutBattaries.jpg (438.94 KiB) Viewed 1872 times
Also did first voltage test with 4pcs of 7s bricks in series.
https://www.youtube.com/watch?v=rNIpTjdEGmw
by nuxland
Mar 09 2020 7:32am
Forum: Battery Technology
Topic: 30Ah 28s LiPo from 7s bricks
Replies: 43
Views: 3835

Re: 30Ah 28s LiPo from 7s bricks

Some progress :)

Making of harness:
LipoHarnessHalfDone.jpg
LipoHarnessHalfDone.jpg (376.41 KiB) Viewed 1887 times
Harness done and final weight:
Harness.jpg
Harness.jpg (232.74 KiB) Viewed 1887 times
by nuxland
Feb 12 2020 3:30am
Forum: Battery Technology
Topic: 30Ah 28s LiPo from 7s bricks
Replies: 43
Views: 3835

Re: 30Ah 28s LiPo from 7s bricks

Now two output 350A andersons are done.
Also zeva bms is in place and wired also dc/dc.
Olimex and LCD is still to be added.
And then I need to do all XT90 wires from bricks.
by nuxland
Feb 12 2020 2:57am
Forum: Large EV General Discussion
Topic: Electric kart
Replies: 243
Views: 50387

Re: Electric kart

For bigger 40Ah and 4kwh battery i do not have separate thread (I have in this thread some pictures). But for 25Ah and 2,5kwh battery i have a separate build thread: https://endless-sphere.com/forums/viewtopic.php?f=14&t=85912 There is also two youtube videos about these battery-s. Bigger and sm...
by nuxland
Sep 11 2019 3:35am
Forum: Large EV General Discussion
Topic: Electric kart
Replies: 243
Views: 50387

Re: Electric kart

I would say that now fast fixation is 99% done. Just have to find time to test it out in the field this year. https://youtu.be/TljsV2ZlSLQ PS! found this metal bar under the table and it suited just fine to help me to install and remove the battery. It gave me just the needed force that i could not ...
by nuxland
Aug 18 2019 1:53pm
Forum: Battery Technology
Topic: 30Ah 28s LiPo from 7s bricks
Replies: 43
Views: 3835

Re: 30Ah 28s LiPo from 7s bricks

Have not done anything from june, because have had zero time :(
But made balance wires for all the packs and started to do main outputs in may.
by nuxland
Jul 31 2019 6:38am
Forum: Large EV General Discussion
Topic: Electric kart
Replies: 243
Views: 50387

Re: Electric kart

have had no time in months to do things i want :( Also have not driven this summer at all and that is sad... But designed new fixation for my batterys and started to implement these. It consists of one round metal and one flat metal that go inside each other. Here are some images that will explan ho...
by nuxland
Apr 24 2019 3:38am
Forum: Large EV General Discussion
Topic: RIPPY KART
Replies: 43
Views: 8590

Re: RIPPY KART

I suggest you record gps with your phone in pocket. I have cycle analyst but hardly look at it in the race :) And afterwards add data to you video with racerender (2 minutes is for free). You can there multiply your speed to calculated constant to get rpm. And when you display rpm in video it makes ...
by nuxland
Apr 15 2019 7:27am
Forum: Battery Technology
Topic: 30Ah 28s LiPo from 7s bricks
Replies: 43
Views: 3835

Re: 30Ah 28s LiPo from 7s bricks

Increased from 30Ah to 35Ah. So 28 Bricks together. Got aluminium and plywood water and laser cut. In the process of threading aluminium and then starting to add bms and fuse and other stuff. One brick is about 890g so 28pcs will be 27,44kg. I think it will be about the same weight as my A123 25Ah p...
by nuxland
Jan 11 2019 3:15pm
Forum: Battery Technology
Topic: iCharger 4010 Duo review
Replies: 46
Views: 7068

Re: iCharger 4010 Duo review

No, you cant.
I did not read the manual and connected this way and one side of the charger blew fuses and etc.

If you want to use both sidesnof the charger at the same time then there must be two separate batterys only.
So you must put disconnect plug in middle
Of your pack.
by nuxland
Dec 20 2018 5:34am
Forum: Battery Technology
Topic: 30Ah 28s LiPo from 7s bricks
Replies: 43
Views: 3835

Re: 30Ah 28s LiPo from 7s bricks

Made a mock-up from cardboard to see how all the stuff will fit :) There will be two 350A anderson just for two motor setup :twisted: In regular races I will use only the back one (the one where there is also charger port). Idea is that if I need to change one brick, then this can be done easily, ju...
by nuxland
Dec 19 2018 2:33pm
Forum: Stand-up EScooter/ESkateboards
Topic: 10kW stand-up scooter with air suspension
Replies: 250
Views: 70283

Re: 5200W stand-up scooter with air suspension

:bigthumb: I have a question about oil level in motor. Did you feel that almost full of oil there were some more amps required to spin the motor? I have an inrunner that has a little bit of oil inside to help spread the heat from coils to outer casing. And was thinking of modifing this to oilcooled ...
by nuxland
Dec 15 2018 3:33pm
Forum: Battery Technology
Topic: 30Ah 28s LiPo from 7s bricks
Replies: 43
Views: 3835

30Ah 28s LiPo from 7s bricks

Everybody have suggested that I should use lipo-s in my kart. So now I have made a plan to build this battery. And actually there is multiple goals to achieve when building this. 1. It should be lighter than my current ones. 2. I want to use this for my two controller+motor 1/4 mile test insted of t...
by nuxland
Dec 14 2018 12:49pm
Forum: Large EV General Discussion
Topic: RIPPY KART
Replies: 43
Views: 8590

Re: RIPPY KART

Just for curiosity :) What is your sprockets sizes for 120km/h.
by nuxland
Nov 29 2018 7:52am
Forum: Battery Technology
Topic: iCharger 4010 Duo review
Replies: 46
Views: 7068

Re: iCharger 4010 Duo review

Forget to asked, partnumber/type of your diode? Was searching the net today and stumbled accross this youtube video comments: https://www.youtube.com/watch?v=YT_eKgLiIgo "Junsi Electronic Co.,Ltd just got back to me. It is a not a Schottky-Diode (to honor the guy, please spell it right) but a ...
by nuxland
Nov 29 2018 6:30am
Forum: Battery Technology
Topic: iCharger 4010 Duo review
Replies: 46
Views: 7068

Re: iCharger 4010 Duo review

Replaced this Voltage regulator and charger started to work with 12V laboratory power supply output. IMG_4880.jpg Had to replace that 6,3V CAP also because it was a little puff to the eye. And it was only after I tried with 15V meanwhile. Then I turned charger off and upped voltage to 35V and when t...
by nuxland
Nov 27 2018 1:57pm
Forum: Resources & EV Related Parts and Services
Topic: Common high current connectors - and my opinion on them
Replies: 57
Views: 39954

Re: Common high current connectors - and my opinion on them

Can you weight one pair with plastics?
Want to know how heavy it will be if I will use 3 pairs.
by nuxland
Nov 27 2018 12:08pm
Forum: Large EV General Discussion
Topic: Industrial Motor gokart build
Replies: 55
Views: 13040

Re: Industrial Motor gokart build

do you have link for these "Using 300amp 1/0GA welding connectors"
I will build 6p usin 8awg wires, so was thinking of crimping one pack positive and another negative together.
because anderson 350 is too bulky, but this looks promising and can keep up my average 200A and peak 650A :)
by nuxland
Nov 27 2018 8:26am
Forum: Battery Technology
Topic: iCharger 4010 Duo review
Replies: 46
Views: 7068

Re: iCharger 4010 Duo review

Forget to asked, partnumber/type of your diode? You mean the diod I replaced. I can't remember and right now it's behind heatsink I do not need to remove this time. I desoldered that diod from scrap electronics but it's parameters were similar to the working one, that was intact from my last bang :...