Search found 453 matches

by Overclocker
Jan 13, 2018 10:58 am
Forum: E-Bike Technical
Topic: Best Cushiony Rear Shock for Ebike
Replies: 16
Views: 601

Re: Best Cushiony Rear Shock for Ebike

cheap coil shocks can be simple w/ no damping

but some cheap ones w/ some rebound damping have primitive designs that have "spiking" issues i.e. very harsh on high-speed hits
by Overclocker
Jan 10, 2018 10:20 pm
Forum: Battery Technology
Topic: MeanWell HLG vs ELG as charger
Replies: 16
Views: 440

MeanWell HLG vs ELG as charger

https://ae01.alicdn.com/kf/HTB1nvswOpXXXXaXXpXXq6xXFXXXP/227166762/HTB1nvswOpXXXXaXXpXXq6xXFXXXP.jpg?size=453259&height=1689&width=1000&hash=50e7e38e6b64b35189cfda02c0b57cd6 https://ae01.alicdn.com/kf/HTB1.jjnLXXXXXbQXXXXq6xXFXXXz/227166762/HTB1.jjnLXXXXXbQXXXXq6xXFXXXz.jpg?size=500176&height=1718&...
by Overclocker
Aug 08, 2017 10:10 am
Forum: Items for Sale - New
Topic: QS MOTOR,0.5-14kW Electric Hub Motor Manufacture China
Replies: 1091
Views: 140038

Re: QS MOTOR,0.5-14kW Electric Hub Motor Manufacture China

https://upload.wikimedia.org/wikipedia/commons/thumb/0/0a/Hyundai_Eos_GL_2014_%2811954748753%29.jpg/280px-Hyundai_Eos_GL_2014_%2811954748753%29.jpg hi qsmotor. i'm thinking of putting two of your e-car hubmotors to the rear of this small Hyundai Eon, while keeping the engine to drive the front whee...
by Overclocker
Aug 07, 2017 1:15 am
Forum: Battery Technology
Topic: 18650 pack to jump start a small car...
Replies: 30
Views: 1590

Re: 18650 pack to jump start a small car...

haha actually my question is how many amps is needed to start this small 1.5L engine. that's all i need to know, i can deal w/ cell selection myself

think honda jazz engine, or hyundai accent

the objective is to use as few cells as possible
by Overclocker
Aug 06, 2017 9:32 am
Forum: Battery Technology
Topic: 18650 pack to jump start a small car...
Replies: 30
Views: 1590

18650 pack to jump start a small car...

Image

ford ecosport 1.5 liter gasoline

how many amps do i need to start this?

i'm thinking Sony VTC5A or the cheaper LG HB6
by Overclocker
Aug 05, 2017 12:42 pm
Forum: General Discussion
Topic: Sony 18650VTC5 cells FAKE or REAL?
Replies: 6
Views: 461

Re: Sony 18650VTC5 cells FAKE or REAL?

this is the only sure way. visual methods not reliable

https://endless-sphere.com/forums/viewtopic.php?t=87798
by Overclocker
Aug 04, 2017 9:37 am
Forum: Battery Technology
Topic: 6-channel independent charger / pseudo-balancer
Replies: 11
Views: 704

Re: 6-channel independent charger / pseudo-balancer



just watched this vid. apparently the TP5000 performs better... gotta look for TP5000 then
by Overclocker
Aug 04, 2017 2:55 am
Forum: Battery Technology
Topic: 6-channel independent charger / pseudo-balancer
Replies: 11
Views: 704

Re: 6-channel independent charger / pseudo-balancer

as mentioned earlier these are FAKE tp4056 chips. accuracy is a lot worse than i expected, they range from 4.11 to 4.25. totally unacceptable :roll: so i'll be ordering these TP5100 modules. the 2A charging current should be a big plus. switchmode so cooler running. google doesn't turn up anything f...
by Overclocker
Jul 30, 2017 9:06 am
Forum: E-Bike Technical
Topic: High cells count vs low cell count.
Replies: 10
Views: 584

Re: High cells count vs low cell count.

a high number of interconnects isn't inherently less safe. actually this is something that is easy to get right :roll: however a lot of things can and do go wrong w/ poorly designed 18650 packs. the metal can itself is one huge negative terminal covered by super thin PVC. have just a little chafing ...
by Overclocker
Jul 28, 2017 11:37 am
Forum: Battery Technology
Topic: 6-channel independent charger / pseudo-balancer
Replies: 11
Views: 704

Re: 6-channel independent charger / pseudo-balancer

Image

good thing i checked the datasheet before pulling the trigger on the B0505. the output current is too low

so i went ahead w/ Plan A. so far so good. this thing is definitely gonna work
by Overclocker
Jul 24, 2017 3:55 am
Forum: Battery Technology
Topic: 6-channel independent charger / pseudo-balancer
Replies: 11
Views: 704

Re: 6-channel independent charger / pseudo-balancer

Dear OC, this video might be of interest to you [youtube]https://youtu.be/rpRYNMrVCk0[/youtube] http://i.imgur.com/w6Drul8.jpg wow thanks for the tip. i was totally unaware of that thing. i even searched this forum for "B0505" and nothing turned up that would allow me to use just one big 5V supply....
by Overclocker
Jul 23, 2017 1:00 pm
Forum: Battery Technology
Topic: 6-channel independent charger / pseudo-balancer
Replies: 11
Views: 704

6-channel independent charger / pseudo-balancer

http://i.imgur.com/B7gI0SG.jpg since these cells are a bit older i'm expecting to do a bit more balancing on them. the objective is to be able to simply plug in this gadget into the group that needs balancing. since each channel is independent it'll simply charge its channel up to 4.20v and stop. t...
by Overclocker
Jul 21, 2017 11:55 am
Forum: Battery Technology
Topic: Old salvaged Panasonic NCR18650 still performing like new!
Replies: 5
Views: 460

Re: Old salvaged Panasonic NCR18650 still performing like ne

iCharger 106B+ internal resistance tests (fully charged). i know i know, not the best method but consistent enough when using my cell holder (w/ the soldered leads) NCR gray Cell1: 79 NCR gray Cell2: 83 NCR gray Cell3: 76 NCR gray Cell4: 76 NCR-GA (used): 64 VTC5 (quite old): 46 LG F1L (new): 69 Sam...
by Overclocker
Jul 19, 2017 1:58 am
Forum: Battery Technology
Topic: Old salvaged Panasonic NCR18650 still performing like new!
Replies: 5
Views: 460

Re: Old salvaged Panasonic NCR18650 still performing like ne

i know right! these cells are really ageing well. btw panasonic NCR is NCA chemistry, while CGR is NMC

NCA has been touted to have superior calendar life. these cells definitely prove it

i've got NMC Samsung 26F that have deteriorated quite a bit by just sitting there idle
by Overclocker
Jul 18, 2017 11:15 am
Forum: Battery Technology
Topic: Charging a 48v eBike battery with 13 1s chargers?
Replies: 7
Views: 524

Re: Charging a 48v eBike battery with 13 1s chargers?

Image

any updates on this project. i went ahead an got six of these 5v 2a wall warts, and twelve tp4056 boards
by Overclocker
Jul 18, 2017 10:59 am
Forum: Battery Technology
Topic: Old salvaged Panasonic NCR18650 still performing like new!
Replies: 5
Views: 460

Old salvaged Panasonic NCR18650 still performing like new!

http://i.imgur.com/8KJiwrV.jpg i just got 4 samples from a local battery "recycler". these are Panasonic NCR18650. the OG NCR 2900mah w/ old-style gray wrapper (dotted) iCharger 2.9A discharge (1C) down to 2.5v one did 2933mah! :shock: the others aren't far behind what's going on? they're supposed ...
by Overclocker
Jul 07, 2017 3:31 am
Forum: E-Bike Non-hub Motor Drives
Topic: DD Hub as a mid drive motor pros and cons?
Replies: 120
Views: 6270

Re: DD Hub as a mid drive motor pros and cons?

https://endless-sphere.com/forums/download/file.php?id=217565 i still haven't decided if i'll mount on frame, as shown, or to do some minor mods to mount the motor on the swingarm the way i understand it, if motor is on frame the chain pull introduces a bit of squat due to chainline in relation to ...
by Overclocker
Jul 06, 2017 1:23 pm
Forum: E-Bike Non-hub Motor Drives
Topic: Lost BBSHD Crank arm bolt-Alternatives
Replies: 8
Views: 759

Re: Lost BBSHD Crank arm bolt-Alternatives

When you first install square-taper cranks make sure that the mating surfaces are clean and free of grease - wash them with detergent or metho if you like and rub them dry. Then carry a suitable ring spanner with you and tighten them every few km as they settle in. Especially the LHS one which - fo...
by Overclocker
Jul 02, 2017 11:20 am
Forum: Battery Technology
Topic: New Samsung cell 33G
Replies: 32
Views: 4058

Re: New Samsung cell 33G

33g.png
33g.png (13.26 KiB) Viewed 591 times
$2. pretty good price!
by Overclocker
Jul 02, 2017 1:18 am
Forum: Battery Technology
Topic: Resistance Soldering Bus Strips to 18650 Cells
Replies: 116
Views: 6200

Re: Resistance soldering bus-strips onto cells



good job! i think this will become more relevant once we see more high-power/bigger metal can cells where we need higher amps per connection
by Overclocker
Jul 02, 2017 1:09 am
Forum: General Discussion
Topic: Dummy Load Heats Like a Mofo...
Replies: 15
Views: 492

Re: Dummy Load Heats Like a Mofo...

Image

that's 2000w. i blow a fan to keep the coils from going limp. nichrome wire btw
by Overclocker
Jun 28, 2017 7:40 am
Forum: Battery Technology
Topic: 18650 Cell Source
Replies: 44
Views: 2884

Re: 18650 Cell Source

i order cells from either KeepPower or Evva

i always check for authenticity by curve matching https://endless-sphere.com/forums/viewt ... &p=1281744

both are trustworthy
by Overclocker
Jun 28, 2017 7:30 am
Forum: E-Bike Non-hub Motor Drives
Topic: DD Hub as a mid drive motor pros and cons?
Replies: 120
Views: 6270

Re: DD Hub as a mid drive motor pros and cons?

Nice discussion. Maybe it will lead to getting electric motors out of the frame and where they belong, which ideally is centered in the pivot point but anchored to the swingarm. Why tolerate the negative effects of having a motor act directly on the suspension, which is the inevitable result of anc...
by Overclocker
Jun 25, 2017 11:27 am
Forum: E-Bike Technical
Topic: Long-term reliability of BBS02vB.
Replies: 13
Views: 541

Re: Long-term reliability of BBS02vB.

https://endless-sphere.com/forums/download/file.php?id=217074 3000 flawless kilometers on my bbs02. but w/ controller tuned down to 22A and using 40t rear cog, 36t front chainring. agree w/ neptronix about the weak bicycle drivetrain. just a PITA to maintain. accelerated chain and sprocket wear. fr...
by Overclocker
Jun 24, 2017 12:37 am
Forum: E-Bike Non-hub Motor Drives
Topic: Getting the best chainline with the bbshd
Replies: 69
Views: 7487

Re: Getting the best chainline with the bbshd

I'd just grind in some serrations or use a threadlocker. https://endless-sphere.com/forums/download/file.php?id=217315 tried doing that but the splines on the freehub body don't go all the way to the edge. the whole cassette stack has to extend past the edge in order to be cinched by the lockring