Search found 288 matches

by pwd
Oct 18 2019 1:41pm
Forum: Battery Technology
Topic: Charging and Balancing Questions for LG HG2 pack (14S/20P)
Replies: 3
Views: 77

Re: Charging and Balancing Questions for LG HG2 pack (14S/20P)

Hi Gary, The standard rated charge current is 1500mA per cell, so 15-20 amps for 20P seems safe. I would leave it at that. The minimum cell voltage of 2.9V isn't conservative enough for my taste. I would say around 3.0V - 3.1V per cell for the BMS and 3.2V - 3.3V per cell or 44.8V total pack voltage...
by pwd
Oct 15 2019 12:32pm
Forum: E-Bike Build Threads / Photos & Video
Topic: PWD's Rocky Mountain Blizzard - mid drive
Replies: 19
Views: 744

Re: PWD's Rocky Mountain Blizzard - mid drive

Thanks E-HP for the info. I ended up ordering the blue LED volt meter; hopefully it is usable in the daylight. I've had good luck with blue LED meters on my commuter build (green wasn't bright enough). Also, the voltage on the Cyclone controller app is off by at least 2 whole volts. Here is a shot f...
by pwd
Oct 13 2019 12:21pm
Forum: E-Bike Build Threads / Photos & Video
Topic: PWD's Rocky Mountain Blizzard - mid drive
Replies: 19
Views: 744

Re: PWD's Rocky Mountain Blizzard - mid drive

I've added an inexpensive cycle computer to track distance/speed/time. Some notes for future reference (captain's log): The last two rides were both approximately 16km each and I hit the controller LVC (approximately 49V) of both times. Ambient temp has been around 8 to 9 Celsius. Avg Speed was 28 k...
by pwd
Oct 07 2019 8:51am
Forum: Battery Technology
Topic: Samsung 40T and other cells like it?
Replies: 76
Views: 1734

Re: Samsung 40T and other cells like it?

Pajda wrote:
Oct 06 2019 2:27am
... I hope I will test soon LG H40
Excellent, I'm looking forward to that. It seems that Queen Battery is the only place to stock that cell.
by pwd
Oct 05 2019 4:07pm
Forum: E-Bike Non-hub Motor Drives
Topic: new cyclone 3000 w mid-drive kit?
Replies: 3240
Views: 363662

Re: new cyclone 3000 w mid-drive kit?

Sorry had another quick question. What is the name or model of the tool needed to tighten the cyclone lockrings? Cyclone said they dont have it available. I mainly see just BB tools for the shell itself not the lockrings Thx Look for a lock ring tool, something like this: https://www.aliexpress.com...
by pwd
Sep 27 2019 6:26am
Forum: E-Bike Build Threads / Photos & Video
Topic: PWD's Rocky Mountain Blizzard - mid drive
Replies: 19
Views: 744

Re: PWD's Rocky Mountain Blizzard - mid drive

Thanks for the suggestions. I went the cheaper route and purchased separate meters. One of those inexpensive bike speedometers and one of the voltage display's that E-HP linked. Fetcher, the meters you've shown would be great for a street machine. I had the bike out for it's first short but proper o...
by pwd
Sep 25 2019 6:30am
Forum: E-Bike Build Threads / Photos & Video
Topic: PWD's Rocky Mountain Blizzard - mid drive
Replies: 19
Views: 744

Re: PWD's Rocky Mountain Blizzard - mid drive

I'm glad shifting gears is fun! So the motor doesn't force your pedals to spin? Look forward to seeing how the drivetrain holds up. That's correct, the motor doesn't force the pedals to spin. There is a freewheel on the motor sprocket and a freewheel on the chainring/crank. Suddenly I have the urge...
by pwd
Sep 23 2019 2:52pm
Forum: E-Bike Build Threads / Photos & Video
Topic: PWD's Rocky Mountain Blizzard - mid drive
Replies: 19
Views: 744

Re: PWD's Rocky Mountain Blizzard - mid drive

I had the bike out for it's first shakedown. The first thing I noticed was how much torque this thing has. Due to the poor throttle modulation ( I blame the controller), the first couple of gears were almost impossible to use without wanting to flip over :shock: For what its worth, I am using the fo...
by pwd
Sep 20 2019 8:04am
Forum: E-Bike Build Threads / Photos & Video
Topic: PWD's Rocky Mountain Blizzard - mid drive
Replies: 19
Views: 744

Re: PWD's Rocky Mountain Blizzard - mid drive

That is a sweet bike fechter! Good to know about the tires. :thumb:
by pwd
Sep 19 2019 12:22pm
Forum: E-Bike Build Threads / Photos & Video
Topic: PWD's Rocky Mountain Blizzard - mid drive
Replies: 19
Views: 744

Re: PWD's Rocky Mountain Blizzard - mid drive

I had the bike out for a ride (in its plain form) and it was awesome. The trail I was one was a fireroad with some sandy offshoots and the fat bike handled it well, it felt like I was riding a two wheeled atv (I don't have any dirt bike experience). IMG_20190915_131655_rotate.jpg The motor kit final...
by pwd
Sep 12 2019 2:54pm
Forum: E-Bike Build Threads / Photos & Video
Topic: Non-overclocked Vector Light Build
Replies: 29
Views: 1860

Re: Non-overclocked Vector Light Build

That is a beautiful looking battery pack. What is the max current you plan on drawing from it?
by pwd
Sep 11 2019 12:17pm
Forum: Motor Technology
Topic: Leaf / leafmotor / leafbike high efficiency 1500w motor
Replies: 1504
Views: 191713

Re: Leaf / leafmotor / leafbike high efficiency 1500w motor

Leafbike tends to be all over with their temp sensors. My first one was KTY 84-130. For my second order, I requested a 10K NTC but they installed a 100K NTC. I had to swap it out for a 10K NTC so it worked with my eBay temp display. The Cycle Analys works with linear sensors as well: https://endless...
by pwd
Sep 09 2019 9:38am
Forum: E-Bike Build Threads / Photos & Video
Topic: PWD's Rocky Mountain Element - refresh
Replies: 32
Views: 2462

Re: PWD's Rocky Mountain Element - refresh

I am currently having a very annoying intermittent throttle issue. The rear motor throttle signal appears to be cutting out. This is taking the fun out of riding it. Unfortunately with all the lighting circuits and dual hall throttle; it isn't easy to track down where the issue is. :x I did attach ...
by pwd
Sep 09 2019 8:56am
Forum: E-Bike Build Threads / Photos & Video
Topic: PWD's Rocky Mountain Blizzard - mid drive
Replies: 19
Views: 744

Re: PWD's Rocky Mountain Blizzard - mid drive

Thanks for the comments folks. The tires are laced into a 26 inch fat wheel but it has approximate 29 inch diameter. I haven't been riding the fat bike as much as I'd hoped but I did take it for a short ride this weekend. The tires are exceptional at rolling over obstacles and soaking up rough terra...
by pwd
Sep 03 2019 9:43am
Forum: E-Bike Build Threads / Photos & Video
Topic: PWD's Rocky Mountain Blizzard - mid drive
Replies: 19
Views: 744

PWD's Rocky Mountain Blizzard - mid drive

I'm finally doing it. I've been running hub motors since my first e-grin but I have never done a mid-drive. I like the idea of the occasional ride in the snow so I've also been looking into fat bikes. Here is what I recently acquired: IMG_20190901_190626_small.jpg IMG_20190901_190615_small.jpg IMG_2...
by pwd
Aug 27 2019 10:53am
Forum: Battery Technology
Topic: Common pack design mistakes, how to avoid?
Replies: 254
Views: 39426

Re: Common pack design mistakes, how to avoid?

Pwd, that layout has many problems Complexity, very poor current sharing, insufficient area for series connects. Then add as many series connects as possible, one for each cell is ideal.. In you previous version several groups had only 3 series connections ~47amps each! Yikes! Thats going to seriou...
by pwd
Aug 22 2019 10:07am
Forum: E-Bike Non-hub Motor Drives
Topic: new cyclone 3000 w mid-drive kit?
Replies: 3240
Views: 363662

Re: new cyclone 3000 w mid-drive kit?

Hi everyone, I'm looking into purchasing this bike (2015 KHS 4 Season 3000): http://1d8piv1xedxt3k9gin22z4pqb30-wpengine.netdna-ssl.com/wp-content/uploads/2014/09/2015-KHS-4Season_3000.pdf but I'm not sure if the bottom bracket style is compatible with the cyclone 3000W kit. It lists "outboard cartr...
by pwd
Aug 16 2019 1:32pm
Forum: Battery Technology
Topic: Common pack design mistakes, how to avoid?
Replies: 254
Views: 39426

Re: Common pack design mistakes, how to avoid?

Hello pack experts. I'm attempting to design an odd shaped pack of 21700's in a 14S7P configuration and I could use some feedback. I need to build it to handle peaks of 140A. Here is what I have come up with so far Black = parallel group Red = series connection on side A Blue = series connection on ...
by pwd
Aug 12 2019 9:01am
Forum: E-Bike Build Threads / Photos & Video
Topic: Non-overclocked Vector Light Build
Replies: 29
Views: 1860

Re: Non-overclocked Vector Light Build

Nice looking build so far. The wheel diameter difference doesn't look bad at all.
by pwd
Aug 12 2019 8:57am
Forum: E-Bike Build Threads / Photos & Video
Topic: PWD's Rocky Mountain Element - refresh
Replies: 32
Views: 2462

Re: PWD's Rocky Mountain Element - refresh

Beefy! I just just looking at 20" tires for my newest experiment, and the Big Ben Plus was one of them... I have a lot of crushed limestone gravel trails around me, and there are sometimes deep sandy sections that throw me off balance. Thanks thundercamel. I would certainly prefer running an even s...
by pwd
Aug 12 2019 8:43am
Forum: E-Bike Build Threads / Photos & Video
Topic: Scott CR1 | X1 Pro | 14s 45a
Replies: 8
Views: 655

Re: Scott CR1 | X1 Pro | 14s 45a

Nice build! That looks like a lot of fun. Hell yeah my dude. It sure beats a ton of zip ties that you can't get tight enough, or reuse again. I wish I could find an even smaller version, so I don't have such enormous and super sharp ratchets by my legs, lol. Scooting them down actually clears everyt...
by pwd
Aug 09 2019 10:58am
Forum: E-Bike Build Threads / Photos & Video
Topic: PWD's Rocky Mountain Element - refresh
Replies: 32
Views: 2462

Re: PWD's Rocky Mountain Element - refresh

After completing a build for someone else; I was able to get my new motor/wheel installed. IMG_20190728_135002.jpg I went with 8AWG phase cable about 6cm away from the axle. My last one had 10AWG. I estimate the motor should be seeing phase peaks of 185A-190A. IMG_20190731_191937.jpg Leafbike used t...
by pwd
Aug 08 2019 9:21am
Forum: E-Bike General Discussion
Topic: Help me develop the perfect throttle
Replies: 73
Views: 2245

Re: Help me develop the perfect throttle

adjustable min and max positions
by pwd
Jul 31 2019 8:30am
Forum: Battery Technology
Topic: Opened up a 52V 20AH JOYISI battery.
Replies: 2
Views: 282

Re: Opened up a 52V 20AH JOYISI battery.

Good job on opening up the pack. That JOYISI battery seems to be a popular choice for beginners. I'm actually surprised that 14S8P can fit in that case; they've at-least maximized it well. The spot welding and strips look pretty average. It would be nice if it had more series connections though. I s...
by pwd
Jul 29 2019 10:26am
Forum: E-Bike Technical
Topic: Sourcing a new controller for a Super73 Z1
Replies: 3
Views: 684

Re: Sourcing a new controller for a Super73 Z1

WCEC no longer offers the Infineon style controllers. They have moved to the Grin Phaserunner. The Phaserunner is more expensive but is in a totally different league. I tried one out for the first time recently. Grin also makes the Baserunner. I still recommend the controllers from EM3EV for a basic...