Search found 146 matches

by nuxland
Sep 11 2019 3:35am
Forum: Large EV General Discussion
Topic: Electric kart
Replies: 140
Views: 30379

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: 7
Views: 783

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: 140
Views: 30379

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: 5356

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: 7
Views: 783

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: 4499

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: 7
Views: 783

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 E-scooters and E-skateboards
Topic: 10kW stand-up scooter with air suspension
Replies: 209
Views: 26915

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: 7
Views: 783

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: 5356

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: 4499

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 TVS -...
by nuxland
Nov 29 2018 6:30am
Forum: Battery Technology
Topic: iCharger 4010 Duo review
Replies: 46
Views: 4499

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: 30480

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: 8722

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: 4499

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 :...
by nuxland
Nov 23 2018 2:44pm
Forum: Battery Technology
Topic: iCharger 4010 Duo review
Replies: 46
Views: 4499

Re: iCharger 4010 Duo review

I measured the diod and installed similar one and it worked. I even installed not SMD diod using wires. After have fully charged my 7s lipo using 48V power supply I connected 50,7V (4x12V pb in serial) to input and something blow inside. I think I had my lipo also connected to balance port just forg...
by nuxland
Nov 22 2018 1:58pm
Forum: Battery Technology
Topic: iCharger 4010 Duo review
Replies: 46
Views: 4499

Re: iCharger 4010 Duo review

Just a a fet or more components were blown out? fuses and one diod :) I was lucky i think considering what I was doing with it :shock: In that post i have pictures also about blown components. But this charger has two identical sets, so if you blow one side you can get blown parts numbers from anot...
by nuxland
Nov 22 2018 12:32pm
Forum: Battery Technology
Topic: iCharger 4010 Duo review
Replies: 46
Views: 4499

Re: iCharger 4010 Duo review

I alao blowed one channel but repaired it and still working great.
I think i made a thread in this forum also for my problem i guess.
by nuxland
Nov 22 2018 12:37am
Forum: Battery Technology
Topic: single cell or prebuilt pack
Replies: 12
Views: 683

Re: single cell or prebuilt pack

Green is amps, you can see green y axis in left.
Yellow is discharged mAh
Blue is temp
Red is pack voltage
Others are cell voltages.

Each has its own y axis in left or right
And x axis is elapsed time
by nuxland
Nov 21 2018 8:39am
Forum: Battery Technology
Topic: single cell or prebuilt pack
Replies: 12
Views: 683

Re: single cell or prebuilt pack

Did the test with Zippy but first impression is that I need "Turnigy Heavy Duty" instead.
Will try to do more Amp test if I can get my iCharger DUO to get it to draw more amps.
by nuxland
Nov 15 2018 6:52am
Forum: Battery Technology
Topic: single cell or prebuilt pack
Replies: 12
Views: 683

Re: single cell or prebuilt pack

Considering same thing. I bought one zippy compact 5Ah and 7s with 25c/35c raiting. Will test it with my icharger duo in sync mode with 70A and see how it handles. second choice was Turnigy Heavy Duty 5000mAh 7S 60C Lipo Pack w/XT90 but with these my pack would be 5kg heavier and also 12055cm3 rathe...
by nuxland
Sep 04 2018 2:49am
Forum: Large EV General Discussion
Topic: Electric kart
Replies: 140
Views: 30379

Re: Electric kart

Took some time and parcipated an amateur karting event. They let me race with soviet era karts. There were two classes "Retro N" that is all soviet (frame, motor even the tires are old, made last century). And ยด"Retro A" where you could use new frame and tires and even modifye motor a little bit, bu...
by nuxland
Sep 04 2018 2:40am
Forum: Large EV General Discussion
Topic: Electric kart
Replies: 140
Views: 30379

Re: Electric kart

Do you have more information on the telemetry you've designed? This is super interesting. I'm using Sevcon and considering the same BMS. Is there a project for it somewhere? For olimex there is project in https://bitbucket.org/elektrikardid/ but it is not public. But you can't use that for telemetr...
by nuxland
Jun 11 2018 2:37am
Forum: Large EV General Discussion
Topic: Electric kart
Replies: 140
Views: 30379

Re: Electric kart

Hey

Tested VBOX sport in weekend, better than my cycle data logger gps :)
https://www.youtube.com/watch?v=nZ65BTSk4lI
by nuxland
May 20 2018 5:41am
Forum: Battery Technology
Topic: Solderless A123 pack
Replies: 40
Views: 6134

Re: Solderless A123 pack

Yes, one layer of copper.