Search found 350 matches

by pwd
May 25 2020 12:19pm
Forum: E-Bike Build Threads / Photos & Video
Topic: PWD's Rocky Mountain Element - refresh
Replies: 50
Views: 6056

Re: PWD's Rocky Mountain Element - refresh

goatman wrote:
May 25 2020 11:28am
100amp from 7p is 14a/cell, whats the volt sag?

im planning 60amp from 4p or 15a/cell max burst
I'm pulling 110A peak which is actually ~15.7A per cell. My pack resistance is about 46 milli-ohms so it sags about 5.17V at peak.
by pwd
May 25 2020 9:44am
Forum: E-Bike Build Threads / Photos & Video
Topic: PWD's Rocky Mountain Element - refresh
Replies: 50
Views: 6056

Re: PWD's Rocky Mountain Element - refresh

The battery is complete and I have been riding the bike for a few days now. Here are some photos of the build and the bike: test fitting the pack inside the battery box. I had to be very cautious since the case is conductive and I haven't fully insulated the pack yet. IMG_20200513_195746.jpg How I t...
by pwd
May 22 2020 2:44pm
Forum: E-Bike General Discussion
Topic: Finalizing my build, a couple questions.
Replies: 9
Views: 278

Re: Finalizing my build, a couple questions.

Looks like a good bike. You spoke issue seems a bit odd. Normally a well tensioned spoke can take most abuse from a hub motor setup, even if it is 14 guage etc... I can't confirm but I'm actually surprise to read that the 1500W is "Motor Wheel Weight 15.3lbs" and the 1200W is "Motor Wheel Weight 12....
by pwd
May 21 2020 10:17am
Forum: Battery Technology
Topic: Common pack design mistakes, how to avoid?
Replies: 318
Views: 54549

Re: Common pack design mistakes, how to avoid?

Please correct me if im wrong, but in the case of a building a high capacity high discharge battery pack. Would this be the best way to build the pack to be able to handle the high current, deliver the high current, and keep the battery pack 'cool'. 25mm.jpg I just completed an odd shaped pack usin...
by pwd
May 14 2020 8:20am
Forum: E-Bike Technical
Topic: Help with the Details
Replies: 10
Views: 900

Re: Help with the Details

I have an 12 fet 3077 controller from em3ev that I've programmed to at least 60A batt and 120 phase (might have had it up to around 140-160). From what I remember (using a different controller now) it worked flawlessly on a 5T 205mm 35mm leafmotor (26" rim) hub with minimal heat. Programming it beyo...
by pwd
May 13 2020 1:54pm
Forum: Battery Technology
Topic: 40T, neodymium magnets, plasti dip cycle test
Replies: 77
Views: 1322

Re: 40T, neodymium magnets, plasti dip cycle test

Awesome, looking forward to the results.
by pwd
May 13 2020 9:35am
Forum: E-Bike Technical
Topic: Help with pinouts needed
Replies: 2
Views: 74

Re: Help with pinouts needed

Here are some connectors. Any of the 9 pin might work for your application. https://www.ebikes.ca/learn/connectors.html Fortunately, your bare wires looks like a typical motor setup. Large Green, Yellow, Blue are the phase cables. Small Green, Yellow, Blue, Red, Black are usually the hall sensors. H...
by pwd
May 13 2020 8:48am
Forum: E-Bike Build Threads / Photos & Video
Topic: PWD's Rocky Mountain Element - refresh
Replies: 50
Views: 6056

Re: PWD's Rocky Mountain Element - refresh

The pack build continues. Clamping the cells together after applying Gorilla glue IMG_20200508_203846.jpg Cutting and fitting nickle strip. I made cardboard pieces first to try and reduce wasted/trimmed nickle sheet. I am using 0.2mm x 30mm sheet and 0.2mm x 100mm for the more complicated pieces. IM...
by pwd
May 12 2020 7:51am
Forum: Battery Technology
Topic: First DIY pack 24s7p
Replies: 7
Views: 204

Re: First DIY pack 24s7p

I'm also in the process of building a 40T pack. bww129 has said it. Check out this thread. I picked up some good tips (scroll down past my post):
viewtopic.php?f=14&t=84412&start=225#p1489521
by pwd
May 11 2020 9:48am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1444
Views: 175433

Re: bluetooth BMS?

Hello all, I have the 7S-16S 320A version of this: https://www.aliexpress.com/item/33014476298.html?spm=a2g0s.12269583.0.0.651f3a5cxEIxvi Does anyone know how to wire in an On/off button to shutdown the BMS? IMG_20200417_085139 (2).jpg I have activated the BMS by momentarily applying 4V to the two ...
by pwd
May 09 2020 10:22am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 1444
Views: 175433

Re: bluetooth BMS?

Hello all, I have the 7S-16S 320A version of this: https://www.aliexpress.com/item/33014476298.html?spm=a2g0s.12269583.0.0.651f3a5cxEIxvi Does anyone know how to wire in an On/off button to shutdown the BMS? IMG_20200417_085139 (2).jpg I have activated the BMS by momentarily applying 4V to the two w...
by pwd
May 09 2020 10:02am
Forum: Battery Technology
Topic: 21700 cell holders
Replies: 2
Views: 216

Re: 21700 cell holders

I'm using these on Samsung 40Ts and the fit just fine. (See my build thread)

https://www.aliexpress.com/item/3306299 ... 5ccbiyOAkd
by pwd
May 05 2020 1:20pm
Forum: E-Bike Build Threads / Photos & Video
Topic: PWD's Rocky Mountain Element - refresh
Replies: 50
Views: 6056

Re: PWD's Rocky Mountain Element - refresh

I'm a fan of Rocky Mountain bikes, this was my first one and I'm using a Blizzard 20 for my other build. The box is fairly tight to the shock linkage, good point. ^^ I have done some crude tests by "jumping" onto the bike to compress the suspension. It does make contact but only in extreme cases. I ...
by pwd
May 05 2020 8:25am
Forum: E-Bike Non-hub Motor Drives
Topic: new cyclone 3000 w mid-drive kit?
Replies: 3316
Views: 422641

Re: new cyclone 3000 w mid-drive kit?

I went out and checked my setup and here is what it looks like: IMG_20200505_091538.jpg IMG_20200505_091549.jpg Your bend on the thin bracket isn't quite the same. Your's doesn't appear to have much of a sharp bend near the crank. The motor should be parallel with your bottom bracket so that it has ...
by pwd
May 01 2020 4:09pm
Forum: E-Bike Build Threads / Photos & Video
Topic: PWD's Rocky Mountain Element - refresh
Replies: 50
Views: 6056

Re: PWD's Rocky Mountain Element - refresh

Thanks! Yep, you got it. It is more current/less sag that I'm looking for. The 40T should be the right balance between current output and capacity that I can fit in this space. I'm looking draw peaks of around 110A total. The extra 50mm of cell height is something I had room to accommodate for.
by pwd
May 01 2020 7:28am
Forum: E-Bike Build Threads / Photos & Video
Topic: PWD's Rocky Mountain Element - refresh
Replies: 50
Views: 6056

Re: PWD's Rocky Mountain Element - refresh

The cells have arrived! I'm testing each cell which is going to take a long time (20 hours per cell). IMG_20200427_161055.jpg I have hastily ordered a couple more chargers (Zanfare C4) to try and speed up the process. They should be arriving today (thanks to Amazon Prime). I was also able to begin t...
by pwd
Apr 23 2020 4:08pm
Forum: E-Bike Non-hub Motor Drives
Topic: new cyclone 3000 w mid-drive kit?
Replies: 3316
Views: 422641

Re: new cyclone 3000 w mid-drive kit?

I do believe the thin bracket on the non-drive side is supposed to have a slight bend in it. That is what I did with mine.
by pwd
Apr 22 2020 10:16am
Forum: E-Bike Non-hub Motor Drives
Topic: new cyclone 3000 w mid-drive kit?
Replies: 3316
Views: 422641

Re: new cyclone 3000 w mid-drive kit?

...Does anyone have any pics of the cyclone mounted on a 100mm bottom bracket? Specifically what spacers/brackets were used. Check out my build: https://endless-sphere.com/forums/viewtopic.php?f=6&t=102195 I don't recall using any extra spacers. I think I just threaded the cup into the bike so it w...
by pwd
Apr 19 2020 1:31pm
Forum: General Discussion
Topic: Need help using ATORCH DC 300V 100A Accurate Energy Meter
Replies: 1
Views: 233

Need help using ATORCH DC 300V 100A Accurate Energy Meter

I've had one of these for a while now but I can't figure out how to get the voltage to show up :? . Current seems to display OK. Has anyone used one of these before?: https://www.aliexpress.com/item/32827325908.html?spm=2114.12057483.0.0.505a2230UMffz0#feedback HTB1QD9pSFzqK1RjSZFvq6AB7VXam.jpg Here...
by pwd
Apr 19 2020 7:39am
Forum: E-Bike Build Threads / Photos & Video
Topic: PWD's Rocky Mountain Element - refresh
Replies: 50
Views: 6056

Re: PWD's Rocky Mountain Element - refresh

Some more items for my battery build arrived. Received some 0.2mm X 30mm pure nickle strip and XLR connectors. This finally allowed me to assemble a quick 7S pack made of old 18650 cells so that I could test out the BMS and dial in my spot welder. This is my first pack ever. Everything has gone fair...
by pwd
Apr 09 2020 12:34pm
Forum: E-Bike Build Threads / Photos & Video
Topic: StefEbike for my wonderful disabled wife
Replies: 103
Views: 13348

Re: StefEbike for my wonderful disabled wife

Thanks. Good luck with the hall sensors.
by pwd
Apr 08 2020 9:23am
Forum: E-Bike Build Threads / Photos & Video
Topic: StefEbike for my wonderful disabled wife
Replies: 103
Views: 13348

Re: StefEbike for my wonderful disabled wife

thundercamel wrote:
May 28 2019 2:55pm
... Designing an arrangement with the hexagon pattern was fun!
Quick question. When you were assembling your battery pack, did you use any sort of adhesive etc.. between the cells and the black cell holders?
by pwd
Apr 01 2020 9:51am
Forum: Items for Sale - New
Topic: Sine Wave Controllers 6FET/12FET/18FET
Replies: 26
Views: 8139

Re: Sine Wave Controllers 6FET/12FET/18FET

Does anyone know where I can find the 6FET version of these EB/KH6XX controllers? I had purchased an 18FET EB/KH618 from West Coast Electric Cycles and am very happy with it but they are no longer for sale.
by pwd
Mar 30 2020 7:04am
Forum: Items for Sale - Used
Topic: SOLD LeafBike / LeafMotor 1500W on 26 inch rim - Canada
Replies: 8
Views: 1334

Re: LeafBike / LeafMotor 1500W on 26 inch rim - Canada

fourbanger wrote:
Mar 27 2020 4:14pm
Not worried about the paint, it's the whole stopping the bike thing I'm thinking aboot.

Thanks for getting back to me. Looking forward to your reply.
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