Search found 39 matches

by jameswalker
Oct 15 2019 6:10am
Forum: E-Bike Technical
Topic: Nucular Electronics owner's thread (setup infos, FW updates, links etc.)
Replies: 451
Views: 44256

Re: Nucular Electronics owner's thread (setup infos, FW updates, links etc.)

Could anyone upload their config file for me to base from? Want to compare and contrast.

Specifically field weakening and ebrake config I am interested in.

Thanks
by jameswalker
Sep 09 2019 12:12pm
Forum: Battery Technology
Topic: DIY High Cell Count Balance Charger for Cheap
Replies: 27
Views: 3162

Re: DIY High Cell Count Balance Charger for Cheap

I agree, building the packs for common charge methods is a good idea. Thats why I was thinking of using multiple small balance chargers at once, where you said this: Connect the two in series for 20S usage. Thasts why I thought, why not use the incredibly cheap and seemingly decent quality 6s charge...
by jameswalker
Sep 09 2019 10:26am
Forum: Battery Technology
Topic: DIY High Cell Count Balance Charger for Cheap
Replies: 27
Views: 3162

Re: DIY High Cell Count Balance Charger for Cheap

Are all of the typical RC / hobby based balance chargers capable to be connected in series, is that a common design trait to them? i.e. essentially a floating supply? If so, that is indeed a neat solution. I have 2 chargers of that type actually, how can I test that they are an isolated output? Just...
by jameswalker
Sep 05 2019 3:31am
Forum: E-Bike Technical
Topic: Nucular Electronics owner's thread (setup infos, FW updates, links etc.)
Replies: 451
Views: 44256

Re: Nucular Electronics owner's thread (setup infos, FW updates, links etc.)

A nice review Souvlucky. I had a similarly enjoyable experience with the commute this morning. I fixed the hall sensor ground and now auto tune works perfectly and FOC control was enabled. The most apparent difference after just 1 ride is how smooth this controller is. Buttery smooth! I will dig dee...
by jameswalker
Sep 03 2019 4:05pm
Forum: E-Bike Technical
Topic: Nucular Electronics owner's thread (setup infos, FW updates, links etc.)
Replies: 451
Views: 44256

Re: Nucular Electronics owner's thread (setup infos, FW updates, links etc.)

I found the problem; where I had moved the wheel over, the ground wire had chaffed where it left the axle. I will repair that tomorrow and fingers crossed the auto tune will work. As a side note, I was provided these instructions on how to debug the halls. Very useful info! Go to controller - debug ...
by jameswalker
Sep 03 2019 3:38am
Forum: E-Bike Technical
Topic: Nucular Electronics owner's thread (setup infos, FW updates, links etc.)
Replies: 451
Views: 44256

Re: Nucular Electronics owner's thread (setup infos, FW updates, links etc.)

My MXUS is not quite ready for use yet, so I used my existing geared motor wheel build (BMC torque). I wasn't successful getting the auto tune to work with this motor (I set the poles to 16 first, as instructed) but at the end of the auto tune, the wheel spins, I got "hall fail" error. I m...
by jameswalker
Sep 03 2019 3:33am
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 1541
Views: 165538

Re: Nucular electronics - complete kit for ev! [beta]

Just posting up to say that the 12F powered me to work this morning :)

The configuration is vast, certainly need to play around with the settings a LOT more!
by jameswalker
Sep 02 2019 3:28am
Forum: E-Bike Technical
Topic: Nucular Electronics owner's thread (setup infos, FW updates, links etc.)
Replies: 451
Views: 44256

Re: Nucular Electronics owner's thread (setup infos, FW updates, links etc.)

Its a 12F using a 4T MXUS.

I don't mind a bit of weight shifting to get the front lifted initially. I can happily wheelie without a motor :)

I am more interested in decent control of the throttle during the wheelie.

Should I start saving for the 24F?!
by jameswalker
Aug 31 2019 2:43am
Forum: E-Bike Technical
Topic: Nucular Electronics owner's thread (setup infos, FW updates, links etc.)
Replies: 451
Views: 44256

Re: Nucular Electronics owner's thread (setup infos, FW updates, links etc.)

What are the best control modes plus throttle config for wheelie control, would anyone know?

I am almost at the point where I can test this thing out for real! Hopefully tomorrow.
by jameswalker
Aug 27 2019 4:17am
Forum: Items for Sale - New
Topic: Nucular electronics - complete kit for ev! [beta]
Replies: 1541
Views: 165538

Re: Nucular electronics - complete kit for ev! [beta]

I received 2 * 12F controllers, but wont be until the weekend I can try it out.
by jameswalker
Aug 16 2019 3:10am
Forum: E-Bike Technical
Topic: Nucular Electronics owner's thread (setup infos, FW updates, links etc.)
Replies: 451
Views: 44256

Re: Nucular Electronics and MXUS hub motor wiring

Hi all, I purchased a MXUS 3kW hub motor and a Nucular 12F controller. It will be used for a recumbent bike and a 20s14p battery. Sorry for the dumb questions! From the hub motor there are several cables of different colors. There are yellow, green and blue thick phase wires which must be connected...
by jameswalker
Aug 13 2019 3:58am
Forum: E-Bike General Discussion
Topic: Where to buy MXUS in EU?
Replies: 13
Views: 1168

Re: Where to buy MXUS in EU?

Interesting. I hadn't heard that regarding the logo.

I placed my order as per the first reply in this thread, still waiting for it.

By how much does the logo stick out? Nothing a file cannot fix?

Thanks
by jameswalker
Jul 30 2019 4:16am
Forum: E-Bike General Discussion
Topic: Where to buy MXUS in EU?
Replies: 13
Views: 1168

Re: Where to buy MXUS in EU?

Done. Perfect, thanks!
by jameswalker
Jul 29 2019 8:39am
Forum: E-Bike General Discussion
Topic: Where to buy MXUS in EU?
Replies: 13
Views: 1168

Where to buy MXUS in EU?

Afternoon, I am after the MXUS V3 in 5T winding, I cannot seem to find anywhere in EU that sells this. They are all 3T. Does anyone know where I might find one? If not EU, where is the best source for the 5T globally? I am guessing their popularity has died because this time last year when I was con...
by jameswalker
Oct 14 2014 12:38pm
Forum: Items for Sale - New
Topic: Welding battery packs in Europe
Replies: 240
Views: 44286

Re: Welding battery packs in Europe

I have done around 2,000 miles on the bike now. It is used daily for my commute. Almost everything else has had problems over that time but the battery remains strong. Mainly I had issues with breaking connectors, hall sensors, chargers. Just waiting for some replacement parts for the charger right ...
by jameswalker
Oct 13 2014 5:47am
Forum: Items for Sale - New
Topic: Welding battery packs in Europe
Replies: 240
Views: 44286

Re: Welding battery packs in Europe

Update: After almost 1.5 years with a Schwibsi battery pack, I can honestly say that it has been the most reliable part of the whole bike. The pack performs flawlessly and Schwibsi was a pleasure to deal with. We had over 80 emails between us while in communication so a lot of his time! Thanks again...
by jameswalker
Sep 25 2013 11:16am
Forum: Battery Technology
Topic: BMS-Battery 900 watt charger failure
Replies: 6
Views: 656

Re: BMS-Battery 900 watt charger failure

Yes I am sure, it was the smaller transformer that died. Not the IGBT's. It used to have a yellow plastic protective casing around it, it is now black and charred. It failed previously by the inductor having a bad solder connection, causing a few sparks so I simply resoldered that. 30 charges later,...
by jameswalker
Sep 25 2013 6:58am
Forum: Battery Technology
Topic: High Quality Charger
Replies: 11
Views: 739

Re: High Quality Charger

I have narrowed it down to 2 choices: beefier chinese charger "lottery" running at ~50%, or start playing with mean well supplies. Still haven't chosen my path yet!
by jameswalker
Sep 24 2013 7:46am
Forum: Battery Technology
Topic: High Quality Charger
Replies: 11
Views: 739

Re: High Quality Charger

rc groups threads people argue about pros and cons of balancing. lots of people have fine results without balancing, so i took the risk as it is one complication less. i may be buying a lipo pack in the future... and for that i will of course balance charge it. but for a123, i am risking not. anyway...
by jameswalker
Sep 24 2013 7:32am
Forum: Battery Technology
Topic: High Quality Charger
Replies: 11
Views: 739

Re: High Quality Charger

Too cheap? if you read OP, i said max $500. How is that too cheap? And there is no need to use a BMS on A123 cells. read.
by jameswalker
Sep 24 2013 6:27am
Forum: Battery Technology
Topic: High Quality Charger
Replies: 11
Views: 739

Re: High Quality Charger

I thought the only way to adjust current was to alter the voltage? Do the 400W chargers have both adjustable voltage AND current? I tuned the voltage to my needs... hadn't realised the current was configurable too. I have no problem running it at say 75%. In fact, I would rather do that than run it ...
by jameswalker
Sep 24 2013 4:19am
Forum: Battery Technology
Topic: High Quality Charger
Replies: 11
Views: 739

High Quality Charger

Hi All, My BMS battery charger has just gone pop. I was using it at 66.4V to charge an a123 pack at around 5A charge current, so fairly slow and safe. No BMS required. I would like to replace it with a more robust charger of similar (or perhaps better) spec but from searching these forums, there onl...
by jameswalker
Sep 24 2013 3:26am
Forum: Battery Technology
Topic: BMS-Battery 900 watt charger failure
Replies: 6
Views: 656

Re: BMS-Battery 900 watt charger failure

Mine just died now too... though the transformer went up in smoke...
There is no way to determine the part number, so it is terminal. Time to get a new charger...