Search found 50 matches

by barbarossa
Mar 15 2020 8:39am
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1744
Views: 244223

Re: My Bafang Ultra Mountain Bike! Frey AM1000

i think it is vice versa for extrem cold environments. I was talking about **charging**, if too cold will destroy the cells, instant scrap. Especially at too high a rate. Cannot rely on harmful internally generated heat, need to warm the cells from the outside. Bringing inside to charge is also an ...
by barbarossa
Mar 15 2020 7:48am
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1744
Views: 244223

Re: My Bafang Ultra Mountain Bike! Frey AM1000

i think it is vice versa for extrem cold environments. modern cells can withstand cold environments very good - especially the LG MJ1. each cell gets warmer based on the chemical discharging process after a while. if cell is very cold it is even more stressed because the motor pulls its amps and the...
by barbarossa
Mar 14 2020 6:37am
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1744
Views: 244223

Re: My Bafang Ultra Mountain Bike! Frey AM1000

It's unfortunate Frey is not yet offering the Innotrace GmbH controller as an option. Word is they have a version of the controller but is low priority. Some very interesting comments regarding improvements in power delivery and efficiency in the following article. I never understood why Bafang or ...
by barbarossa
Mar 06 2020 2:05am
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1744
Views: 244223

Re: My Bafang Ultra Mountain Bike! Frey AM1000

i made the battery teardown of my original 48 volts 13s6p battery (LG MJ1 cells). i am disappointed about the original built. several strips had a little rust: rust.JPG this means this strip is not pure nickel but nickel plated steel. nickel plated steel is a horrible conductor and for that reason ...
by barbarossa
Feb 26 2020 4:00pm
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1744
Views: 244223

Re: My Bafang Ultra Mountain Bike! Frey AM1000

Just curious. How many miles or kilometers did you get out of the battery? hard to say because i changed my display. but i would say around 2500-3000km and timespan was 2.5-3 years. this sounds not much but i am the uphill/downhill guy - i like the short punch and power. i never used my AM1000 for ...
by barbarossa
Feb 26 2020 9:15am
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1744
Views: 244223

Re: My Bafang Ultra Mountain Bike! Frey AM1000

I am really astonished about your post... If you found such bad quality it sounds like really dangerous for our safe.. I just ordered two FREY fat 1000 with four batteries 48v 21ah. If I had before those information probably I did not buy the second batteries.... I think that FREY must guarantee th...
by barbarossa
Feb 26 2020 6:39am
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1744
Views: 244223

Re: My Bafang Ultra Mountain Bike! Frey AM1000

original 48volts / 13s6p battery teardown ...a while ago I posted that the battery built is ok. now i made the battery teardown of my original 48 volts 13s6p battery (LG MJ1 cells). i needed the case and to be honest i never used the battery with my higher ampere modded controller and my own built 1...
by barbarossa
Jan 31 2020 2:51am
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1744
Views: 244223

Re: My Bafang Ultra Mountain Bike! Frey AM1000

@cscscs: you simply took your Dorado Plus FLX battery and it matched with the Frey frame original mounts !? I swapped everything over to a bare AM1000 frame, but I suspect the end caps are the same regardless. aahhh… i remember you bought a naked Frey frame. and now i understand : you reused the or...
by barbarossa
Jan 31 2020 1:20am
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1744
Views: 244223

Re: My Bafang Ultra Mountain Bike! Frey AM1000

Maybe the 52v case has been redesigned to be taller instead of wider??? But if you look closely in the unboxing video just a few posts ago you can see the extra width of the battery extending outboard of the frame on the left side. If my understanding is correct, I think Grace is saying all the bat...
by barbarossa
Jan 30 2020 3:16pm
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1744
Views: 244223

Re: My Bafang Ultra Mountain Bike! Frey AM1000

and I don't think I'd have much use for some of the Eggrider features one feature of eggrider v2 i really appreciate is to change/adapt the Bafang controller settings during my rides - ALL Bafang Ultra settings can be changed incl. torque settings (dont forget to power off/on after setting was chan...
by barbarossa
Jan 29 2020 12:42pm
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1744
Views: 244223

Re: My Bafang Ultra Mountain Bike! Frey AM1000

Personally I prefer the 17.5AH battery as the bike is already heavy and the range on the 17.5 is already plenty - also the 21 will protrude - I even removed the handle from mine as it was irritating my knee as it also protrudes). I read this whole thread, and remember someone else also commenting t...
by barbarossa
Jan 20 2020 7:06am
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1744
Views: 244223

Re: My Bafang Ultra Mountain Bike! Frey AM1000

i have an additional cable for my GPS tracker directly connected to the battery cable and a self made connection from the controller cable (5V+/ground/motor off) to the rear brake pressure sensor and my gearsensor incl. Higo plug. the gps tracker itself is mounted at the inner plastic motor cover. ...
by barbarossa
Jan 10 2020 9:03am
Forum: Battery Technology
Topic: Speedict neptune lite
Replies: 102
Views: 14633

Re: Speedict neptune lite

...11-12 degrees and sunshine… there are no real winters anymore in central europe... time to test the modded original Bafang Ultra controller and Neptune 15 BMS (not yet the 1 mOhm version)...nice ride along the countryside... started with 62.2volts : Begin_volts.jpg warm up with 60A : Bafang_Ultra...
by barbarossa
Jan 10 2020 6:05am
Forum: Battery Technology
Topic: Speedict neptune lite
Replies: 102
Views: 14633

Re: Speedict neptune lite

hey Danny !!! my christmas present arrived : Neptune 15 BMS with 4x R001 (1mOhm) :bigthumb: thank you !!!!! especially for the additional cables !!! as if you knew that i need some for connecting the speed sensor :D wrapped perfectly as usual: wrapping.jpg content: neptune.jpg my first LG HG2 15s5p ...
by barbarossa
Dec 14 2019 12:04pm
Forum: Battery Technology
Topic: Speedict neptune lite
Replies: 102
Views: 14633

Re: Speedict neptune lite

100A restriction, both APK and Firmware (for 8 x 1mOhm resistors) ========================================================= https://drive.google.com/open?id=1FLWt8k-iBluBcwtLjdzp6hszLfCLsZpr Danny hey Danny, perfect. values are normal again and limitation is gone. weather is very bad outside so i c...
by barbarossa
Dec 14 2019 9:10am
Forum: Battery Technology
Topic: Speedict neptune lite
Replies: 102
Views: 14633

Re: Speedict neptune lite

100A restriction, both APK and Firmware (for 8 x 1mOhm resistors) ========================================================= https://drive.google.com/open?id=1FLWt8k-iBluBcwtLjdzp6hszLfCLsZpr Danny hey Danny, perfect. values are normal again and limitation is gone. weather is very bad outside so i c...
by barbarossa
Dec 14 2019 5:47am
Forum: Battery Technology
Topic: Speedict neptune lite
Replies: 102
Views: 14633

Re: Speedict neptune lite

shit, I did not take any photos and my Neptune 15 is carefully wrapped into a few Kapton tape layers and well positioned in my battery. but i can say : I have the board version with 8x Nexperia PSMN3R3-80BS mosfets. max current of 100A would be perfect. i dont know how long such a firmware change t...
by barbarossa
Dec 14 2019 5:14am
Forum: Battery Technology
Topic: Speedict neptune lite
Replies: 102
Views: 14633

Re: Speedict neptune lite

Hi Danny, cool idea. using 1 mOhm resistors will result in 4x 0.625 Watts at 4x25 Amps, my solution in 8x 0.625 Watts at 8x 12.5 Amps. your solution is really better - resulting in less heat. all displayed values would be a quarter of the actual values. yep, heat is the real enemy :? anyways handli...
by barbarossa
Dec 14 2019 4:46am
Forum: Battery Technology
Topic: Speedict neptune lite
Replies: 102
Views: 14633

Re: Speedict neptune lite

Hi Danny, cool idea. using 1 mOhm resistors will result in 4x 0.625 Watts at 4x25 Amps, my solution in 8x 0.625 Watts at 8x 12.5 Amps. your solution is really better - resulting in less heat. all displayed values would be a quarter of the actual values. yep, heat is the real enemy :? anyways handli...
by barbarossa
Dec 14 2019 4:12am
Forum: Battery Technology
Topic: Speedict neptune lite
Replies: 102
Views: 14633

Re: Speedict neptune lite

But you can add 4x R004 SMD 2512 shunt resistors ( one for each mosfet, I simply soldered it over the 4 existing ones and 2 additional - black 14AWG wires for the higher current and 1 additional + red wire outside Neptune. Additionally I added more solder to all 8 drain mosfet pins). This results i...
by barbarossa
Dec 13 2019 3:23pm
Forum: Battery Technology
Topic: Speedict neptune lite
Replies: 102
Views: 14633

Re: Speedict neptune lite

Hi there, I just got hands on the neptune 15 and I was wondering if there a way to bypass the max discharge current? 50A is not enough for my setup. Cheers if bypass it, all protections such as over current, cell under voltage will be stopped, and charging won't start. But you can add 4x R004 SMD 2...
by barbarossa
Oct 27 2019 12:52pm
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1744
Views: 244223

Re: My Bafang Ultra Mountain Bike! Frey AM1000

How are your batteries doing? Is Frey using quality cells and chargers? always very nice videos !!!! really nice :D it could be that newer DPC18 displays include a setting for a 52V battery. but normally the DPC18 calculates discharge capacity based on voltage of a 48V battery. fuel gauge and perce...
by barbarossa
Oct 27 2019 3:59am
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1744
Views: 244223

Re: My Bafang Ultra Mountain Bike! Frey AM1000

Yesterday I did 44 miles with my local cycling club on road. At the end of the ride I had 43% battery remaining and a range of 39 miles left. I was only using Eco assist levels for most of the ride, although the last two miles to home I was on Sport Level 5 and hit 45mph on slight downhill run. I k...
by barbarossa
Aug 24 2019 7:27am
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1744
Views: 244223

Re: My Bafang Ultra Mountain Bike! Frey AM1000

Already looked at the SRAM XG1150, but as you said, it's a whole new wheel and 148/12 boost isn't vast in choice and pricey. Also everyone is advising against a 10t cog with an ultra's torque, I'll go with the 48t with 11-40t shimano cassette for now. Also if you use a chain calculator, the 50t jus...
by barbarossa
Aug 24 2019 1:32am
Forum: E-Bike Non-hub Motor Drives
Topic: My Bafang Ultra Mountain Bike! Frey AM1000
Replies: 1744
Views: 244223

Re: My Bafang Ultra Mountain Bike! Frey AM1000

That'll be a no by a hairs breath. The Wolftooth 50t lightly brushes the frame, only a couple of wide teeth that have muck on them, but the margin is too small, the gap is basically zero, unmeasurable. 48T is going to be max on the Frey HT1000. Already ordered but pricey in the UK. I also took off ...