Search found 12 matches

by PScott
May 02 2019 5:28pm
Forum: E-Bike General Discussion
Topic: First E-Bike - Doing DIY BBSHD - Critique my plan
Replies: 163
Views: 9756

Re: First E-Bike - Doing DIY BBSHD - Critique my plan

Steve.Morris, I read your post and skipped over all the other nonsense... over weight, bought a BBSHD from em3ev...been there done that.....you have 1/2 the commute i have...just ride a normal bike ...thats it...an ebike with all its challenges and costs will not get you fit. It actually will make y...
by PScott
May 02 2019 4:14pm
Forum: Battery Technology
Topic: Smart BMS max current.
Replies: 8
Views: 547

Re: Smart BMS max current.

john61ct, Ok i understand what you're saying..limiting the current is the job of the controller..but why are BMS advertised by current rating? Im looking at this BMS and they have 14S in 30A, 40A, and 60A models....just different mosfets? Im going to send them a message and find out.


Paul
by PScott
May 01 2019 5:09pm
Forum: Battery Technology
Topic: Smart BMS max current.
Replies: 8
Views: 547

Re: Smart BMS max current.

Yes, do not expect a normal BMS to actually do current throttling. Like sizing a fuse, you buy a BMS that can handle a current higher than the bank will see. It is your job as system designer to predict and control what that rate will be. Personally I would use fuses rated lower than the BMS spec t...
by PScott
May 01 2019 3:25pm
Forum: Battery Technology
Topic: Smart BMS max current.
Replies: 8
Views: 547

Smart BMS max current.

Is it possible to have max current customized on a BMS? I'm building a 14S6P pack with LG HG2 cells and considering this "smart bms" from lithiumbatterypcb.com. They only have 40A and 60A models but I want about 50A max. https://www.lithiumbatterypcb.com/product/13s-48v-li-ion-battery-pcb-board-54-6...
by PScott
Sep 18 2017 8:23pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: 14k liquid cooled QS Motor
Replies: 4
Views: 1451

Re: 14k liquid cooled QS Motor

I would not want to have >40kg of unsprung rear wheel mass in such powerful Motorcycle Is there no alternative with mid-drive? Ok. I prefer a mid drive too.. sprung and center weight but in what frame and what motor with 14k+ power? Everything seems to be going towards mid drives but does someone s...
by PScott
Sep 14 2017 10:09am
Forum: E-Scooter and Motorcycle General Discussion
Topic: 14k liquid cooled QS Motor
Replies: 4
Views: 1451

14k liquid cooled QS Motor

What do you guys think about buying one of they bikes with the new 14K liquid cooled QS motors? I know its not a Zero but its cheaper. $4100 without battery The 14K also comes as a kit for $2000.. Anyone ordered one? bike: https://wholesaler.alibaba.com/product-detail/2017-KTM-new-super-power-14kw_6...
by PScott
Jul 18 2017 7:24pm
Forum: Items for Sale - Used
Topic: Kepler Friction drive
Replies: 2
Views: 587

Re: Kepler Friction drive

Sold.
by PScott
Jul 16 2017 6:57pm
Forum: E-Bike Non-hub Motor Drives
Topic: BBSHD thottle response.
Replies: 15
Views: 4360

BBSHD thottle response.

I finished my BBSHD build today! Works great under assist mode but the throttle is very abrupt. With assist set to 0 it's hard to modulate the thottle smoothly. It's like on or off. Is there a way to change how gradual the thottle ramps?

PScott
by PScott
Jul 16 2017 3:45pm
Forum: Items for Sale - Used
Topic: Kepler Friction drive
Replies: 2
Views: 587

Kepler Friction drive

Friction drive .. Made by John Wessel's (Kepler). Mounts on down tube. Comes with everything you need except battery. Includes motor, 80A ESC and handlebar display .

$100
by PScott
Jul 04 2017 10:43am
Forum: Battery Technology
Topic: Test load for 14s 7p
Replies: 3
Views: 401

Re: Test load for 14s 7p

I would like to test for 20A
by PScott
Jul 04 2017 7:19am
Forum: Battery Technology
Topic: Test load for 14s 7p
Replies: 3
Views: 401

Test load for 14s 7p

Ive built a 14s 7p 18650 pack and I'd like to test it out before mounting on my bike. How do I create a test load for it?
by PScott
May 19 2017 8:44pm
Forum: Battery Technology
Topic: If you are building packs today, which cells to choose?
Replies: 82
Views: 15357

Re: If you are building packs today, which cells to choose?

Nkon.nl 2.50 euros a cell however you have to buy 540 cells to get that rate. Bought 540, Sold leftover cells pretty quick at a higher price to vapers. Good deal for US folks: 1,25$ 2250mah cells https://www.youtube.com/watch?v=6uqpd6VYu_8 How good of a deal is this? It seems really good? Thats an ...