Search found 481 matches

by pwd
May 05 2021 1:04pm
Forum: EBike Build Threads
Topic: New e- fatbike build
Replies: 1
Views: 32

Re: New e- fatbike build

Have a look in the mid drive section "EBike Non-hub Motor Drives", there are many posts there about open source firmware for the TSDZ2/displays
by pwd
May 01 2021 12:05pm
Forum: EBike Build Threads
Topic: PWD's Rocky Mountain Element - 2WD
Replies: 63
Views: 8974

Re: PWD's Rocky Mountain Element - 2WD

After doing some maintenance over the winter to the bike, I've been back on the road for a few weeks. I replaced the seals on my rear shock (Fox Float R), serviced my single coil fork (Marzocchi Bomber MX Lo), changed/bled the fluid on front brake (Avid Juicy Three) and modified my steel battery box...
by pwd
Apr 29 2021 1:07pm
Forum: EBike Troubleshooting
Topic: SOLVED! Controller overheating
Replies: 4
Views: 150

Re: SOLVED! Controller overheating

That is great, I'm glad you solved it and told us what the issue was. :bigthumb:
by pwd
Apr 29 2021 9:23am
Forum: EBike Troubleshooting
Topic: SOLVED! Controller overheating
Replies: 4
Views: 150

Re: Controller overheating! HELP!

Did you ensure the phase cables between the motor and controller were securely fastened/joined?
by pwd
Apr 19 2021 10:41am
Forum: EBike Troubleshooting
Topic: LO26 Samebike battery 48v 10.4ah versus BBSHD
Replies: 2
Views: 113

Re: LO26 Samebike battery 48v 10.4ah versus BBSHD

You have more than double the stress on the battery pack which will significantly reduce it's life and performance. (500W+ to 1400W +) You can reduce the stress on the battery pack by using less current on your BBSHD by programming it. As you've suspected, the BBSHD may be programmed for 52V which w...
by pwd
Apr 18 2021 10:19am
Forum: Battery Technology
Topic: ANT BMS Why lost bluetooth signal and how restart?
Replies: 2
Views: 174

Re: ANT BMS Why lost bluetooth signal and how restart?

The way I switch between BMSs in Android (7) using the VBMS app is I close the app and then start it again. When the "Auto connection..." appears I rapidly tap the top half of the screen above all the app buttons (see area circled in red) It usually then brings up the option to manually co...
by pwd
Apr 16 2021 1:05pm
Forum: EBike Non-hub Motor Drives
Topic: new cyclone 3000 w mid-drive kit?
Replies: 3506
Views: 465486

Re: new cyclone 3000 w mid-drive kit?

Good day folks, does anyone have experience with the BOOST function on the stock 40A controller? This is the controller I am referring to (YKZ7240JN -B): http://sickbikeparts.com/content/Manuals/36V%20-%2072V%20BT%20Controller%20Rev%20A.pdf I have turned BOOST on in the bluetooth app but I haven't n...
by pwd
Apr 16 2021 9:21am
Forum: EBike General Discussion
Topic: Tips or Tricks
Replies: 17
Views: 550

Re: Tips or Tricks

edit: I see you got it off but for future reference:

Ah yes, road salt. WD40 isn't bad but you may want some stronger penetrating oil like liquid wrench, pb blaster, break free etc... and let it soak for at least a couple hours. A coating of grease would be good before installation too.
by pwd
Apr 09 2021 12:54pm
Forum: EBike Non-hub Motor Drives
Topic: Chain jamming between bbshd and Lekke chainring
Replies: 5
Views: 232

Re: Chain jamming between bbshd and Lekke chainring

As COAR has pointed out, if you bike has a derailleur clutch make sure it is engaged. Some of them can be adjusted as well. I've mistakenly taken off for a ride a few times without re-enabling the clutch which caused chain issues.
by pwd
Mar 27 2021 11:36am
Forum: Battery Technology
Topic: Adjusting voltage on charger
Replies: 4
Views: 744

Re: Adjusting voltage on charger

Hello, I've also got a similar situation with a similar charger. It is marked "YZPOWER-600" on the case and "YZ300" on the PCB. I would like to decrease the charger output voltage from 87.6V to 86V. The lowest I can get it to go by adjusting the trim pot is 86.8V. Back side of th...
by pwd
Mar 25 2021 6:58pm
Forum: EBike Build Threads
Topic: 3KW / 8KW MXUS & Powervelocity 24S2P / 34S6P ?
Replies: 43
Views: 1666

Re: 3KW / 8KW MXUS & Powervelocity 24S2P / 34S6P ?

34S lithium-ion is unusually high but certainly possible. :bigthumb: My only gripe would be that higher voltage components seem to be more expensive (charger, controller, any dc-to-dc converters, displays etc...) for the same wattage. What sort of top speed are you looking to hit? FYI I just finishe...
by pwd
Mar 25 2021 8:54am
Forum: EBike Build Threads
Topic: PWD's Rocky Mountain Blizzard - mid drive
Replies: 44
Views: 5962

Re: PWD's Rocky Mountain Blizzard - mid drive

goatman wrote:
Mar 24 2021 11:17pm
have you seen what the connector resistance values in the bms app are for each p-group?
I have not but would like to. The BMS app I'm using is VBMS (ANT BMS) for Android. What app/version will show the resistance values for each group?
by pwd
Mar 25 2021 8:44am
Forum: EBike Build Threads
Topic: PWD's Rocky Mountain Blizzard - mid drive
Replies: 44
Views: 5962

Re: PWD's Rocky Mountain Blizzard - mid drive

I've learned the hard way that it is important to keep the drivetrain clean and well lubed especially in sticky/dirty/salty snow. What products are you liking? I first give the chain a wipe down with an old rag to remove loose sand etc.. and then a clean shop towel with wd40 to remove some of the o...
by pwd
Mar 24 2021 12:14pm
Forum: EBike Build Threads
Topic: PWD's Rocky Mountain Blizzard - mid drive
Replies: 44
Views: 5962

Re: PWD's Rocky Mountain Blizzard - mid drive

Battery pack build is finished and working. IMG_20210315_150655 (1).jpg IMG_20210317_143341.jpg Spot welding with 0.2mm pure Nickle sheet IMG_20210319_083651.jpg Joining the two sub packs IMG_20210319_162622.jpg Series link for the two sub packs. IMG_20210319_101140.jpg Spot welding and balance wire...
by pwd
Mar 16 2021 4:22pm
Forum: EBike Build Threads
Topic: 3KW / 8KW MXUS & Powervelocity 24S2P / 34S6P ?
Replies: 43
Views: 1666

Re: 3KW / 8KW MXUS & Powervelocity 24S2P / 34S6P ?

Have you considered the voltage sag for your two pack options? Low parallel counts will sag a lot, even with good cells. If you haven't seen this already: you can compare discharge curves of difference cells IE the VTC6 vs 40T etc..:
https://lygte-info.dk/review/batteries2 ... arator.php
by pwd
Mar 15 2021 7:13pm
Forum: EBike Build Threads
Topic: PWD's Rocky Mountain Blizzard - mid drive
Replies: 44
Views: 5962

Re: PWD's Rocky Mountain Blizzard - mid drive

I received my "4 wire" internal resistance tester today, the YR1035+ : https://ae01.alicdn.com/kf/H3747ae1677f64c8ebf77a9b0df1590a9z.jpg https://www.aliexpress.com/item/1005002004465045.html Very happy with the tester and would highly recommend it. I measured all the cells and found that t...
by pwd
Mar 12 2021 1:29pm
Forum: EBike Build Threads
Topic: 3KW / 8KW MXUS & Powervelocity 24S2P / 34S6P ?
Replies: 43
Views: 1666

Re: 3KW / 8KW MXUS & Powervelocity 24S2P / 34S6P ?

Ok so you are expecting ~35A max current from this 24S2P pack (3000W / 86.4V = ~ 35A). That seems doable for a very short burst with VTC6 or VTC5. Have you considered slightly larger 21700 cells like the 40T or P42A? They are more capable and cost less. I'm sure there are even better alternatives to...
by pwd
Mar 12 2021 11:12am
Forum: EBike Build Threads
Topic: 3KW / 8KW MXUS & Powervelocity 24S2P / 34S6P ?
Replies: 43
Views: 1666

Re: 3KW / 8KW MXUS & Powervelocity 24S2P / 34S6P ?

Is 24S2P VT6 the total pack size? What max current to you plan on drawing from the battery pack? Seems very undersized if you plan on drawing more than 30A total batt current.
by pwd
Mar 10 2021 9:33am
Forum: EBike Build Threads
Topic: Another Bomber/Enduro Clone
Replies: 31
Views: 1867

Re: Another Bomber/Enduro Clone

BlueSeas wrote:
Mar 09 2021 9:32pm
...
Outside of pouring rain, I'm banking it doesn't make much difference?
Probably not much difference really. Just thought I'd point it out incase you didn't notice. Enjoy the ride.
by pwd
Mar 09 2021 11:39am
Forum: EBike Build Threads
Topic: Another Bomber/Enduro Clone
Replies: 31
Views: 1867

Re: Another Bomber/Enduro Clone

Nice build, I bet that thing is a hoot on the road. Is your rear tire on backwards?
by pwd
Mar 08 2021 4:16pm
Forum: Battery Technology
Topic: 36v jetson hoverboard battery
Replies: 2
Views: 169

Re: 36v jetson hoverboard battery

You *may* not want to use those packs again if the cells have dipped below a safe voltage of roughly 2.5V. The first thing I would do is check each cell groups voltage. A 36V Lithium Ion pack is usually made up of 10 cells in series, so there will be 10 groups to check. I cannot tell from the photo,...
by pwd
Mar 08 2021 8:40am
Forum: EBike Build Threads
Topic: PWD's Rocky Mountain Blizzard - mid drive
Replies: 44
Views: 5962

Re: PWD's Rocky Mountain Blizzard - mid drive

Thanks, it is my go to activity during the winter now. You are correct about needing the patch due to wear from a larger chainring. However, on top of that; I was having chain suck issues where the chain wouldn't let go of the chainring as is spun around. This caused the chain to grind up against th...
by pwd
Mar 07 2021 12:15pm
Forum: EBike Build Threads
Topic: PWD's Rocky Mountain Blizzard - mid drive
Replies: 44
Views: 5962

Re: PWD's Rocky Mountain Blizzard - mid drive

This bike has now over 3200km and is being ridden almost daily. I've learned the hard way that it is important to keep the drivetrain clean and well lubed especially in sticky/dirty/salty snow. IMG_20201222_090837.jpg IMG_20201222_090953.jpg Made patch with some aluminum plate and JB weld; which nee...
by pwd
Feb 28 2021 8:29am
Forum: Battery Technology
Topic: A question for any battery builders, DIY 72v 48ah 20S16P build.
Replies: 10
Views: 411

Re: A question for any battery builders, DIY 72v 48ah 20S16P build.

Take a look at this thread for the topic of "current sharing" : https://endless-sphere.com/forums/viewtopic.php?f=14&t=84412 I'm not sure how much current you plan on drawing from the pack but 16P has potential for some pretty high current. Some of the series connections only have 3 ce...