Search found 328 matches

by shinyballs
Oct 04 2018 9:44am
Forum: Items for Sale - New
Topic: QS MOTOR,0.5-14kW Electric Hub Motor Manufacture China
Replies: 1160
Views: 175652

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

I got a QS 10"X3.0" 3000W 205 50H V3 for my Velocifero scooter http://www.cnqsmotor.com/en/article_read/QS%20high%20speed%2010inch%203000W%20205%2050H%20V3%20Brushless%20DC%20Electric%20Scooter%20Hub%20Motor/183.html Looking for a good quality tubeless tire which is not more than 16" in total diamet...
by shinyballs
Oct 02 2018 6:25am
Forum: Items for Sale - New
Topic: DC-DC Multi-Purpose Voltage Converter
Replies: 12
Views: 413

Re: DC-DC Multi-Purpose Voltage Converter

Lyen wrote:
Oct 01 2018 3:07pm
Hi Fechter, it is good to hear from you. The chip is covered with epoxy type material so I am not able to see it.
You should sample 1 by removing the potting to know if your converter uses the fake chip or send it to someone to do this...
by shinyballs
Sep 24 2018 7:50am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 2578
Views: 136015

Re: Sur-Ron - New Mid drive Bike

I second and it's street legal! Would be nice if the pack is a bit bigger(>20%) for more range... thinking if it's practical to add more batteries under the seat and use the same bms - i.e. by using thick parallel wires to connect the extra cells.
by shinyballs
Jul 06 2018 5:37am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 807
Views: 41302

Re: bluetooth BMS?

Thanx guys! I usually start balancing when a cell hits 4V. So, it can balance up to 24s, I don't see any pc connectivity option; I guess it's not supported.
by shinyballs
Jul 04 2018 12:21pm
Forum: E-Bike Build Threads / Photos & Video
Topic: A2B Metro restoration / modification - Fechter's first Ebike
Replies: 111
Views: 19949

Re: A2B Metro restoration / modification - Fechter's first Ebike

Update on the dimmer I posted a few months ago, it works at 12V and 20V. Dimming is tricky to adjust, takes about 2-4 seconds to dim/brighten and I was able to use only 2 brightness settings. When connected to 3 led headlights at 20V, power output is: Dim - 9W Full - 28W Since the amp draw is low at...
by shinyballs
Jul 04 2018 9:58am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 807
Views: 41302

Re: bluetooth BMS?

Reading the posts from a few months back, looks like it's usable except the lousy english app. Concerning reliability, so far how many miles have you guys road tested this bms? What's the max # of cells it can display on the lcd screen? I only see 18 on the seller page. Does the "Automatic balance" ...
by shinyballs
Mar 19 2018 7:38am
Forum: E-Bike Build Threads / Photos & Video
Topic: A2B Metro restoration / modification - Fechter's first Ebike
Replies: 111
Views: 19949

Re: A2B Metro restoration / modification - Fechter's first Ebike

Got a similar LED headlight to yours - https://www.amazon.com/gp/product/B00XVAEP8E/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1 Light is rated 12V-80V. Tried to wire 2 in series to my 24s(98V) pack. The 1st light is bright but got hot to touch in <5 minutes, the 2nd light is barely warm and just dim...
by shinyballs
Mar 03 2018 6:15am
Forum: E-Bike General Discussion
Topic: The ebike parts designing thread with CAD/CAM
Replies: 128
Views: 8697

Re: The ebike parts designing thread with CAD/CAM

Thanks guys. Using Autodesk Inventor Pro and still learning the ropes... Looking if there is some kind of "Auto Trace" function in the program after inserting the scanned image in the sketch work area. If none, will just have to manually "trace" using lines, arcs, fillets, etc. It's showing file typ...
by shinyballs
Mar 01 2018 8:01am
Forum: E-Bike General Discussion
Topic: The ebike parts designing thread with CAD/CAM
Replies: 128
Views: 8697

Re: The ebike parts designing thread with CAD/CAM

Looking for an inexpensive way to convert this fork into cad data. Surface is all flat ; height would be increased from 14" to 15.5" and cut using water-jet.

Velocifero-MAD-500-a135902d47f62128-large 2jj.jpg
Velocifero-MAD-500-a135902d47f62128-large 2jj.jpg (32.41 KiB) Viewed 1340 times
by shinyballs
Jan 21 2018 8:53pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Velocifero Mad scooter upgrade
Replies: 3
Views: 1472

Re: Velocifero Mad scooter upgrade

Existing sprocket on the rear has 70T. Does anyone know where I can find a >99T 8mm/T8F sprocket?
by shinyballs
Nov 14 2017 6:58am
Forum: E-Bike General Discussion
Topic: Active pre-charge/inrush control
Replies: 725
Views: 68671

Re: Active pre-charge/inrush control

I may just go all fets because of the smaller density compared to contactor + dc-dc + precharge circuit combination. The Toshiba TK72E12N1,S1X fet you mentioned earlier looks like a better choice and has come down in price. It's $1.86 if you buy 10pcs in Mouser. https://www.mouser.com/ProductDetail/...
by shinyballs
Nov 03 2017 8:53am
Forum: E-Bike General Discussion
Topic: Active pre-charge/inrush control
Replies: 725
Views: 68671

Re: Active pre-charge/inrush control

Thanks to Jeremy and Richard, my pre-charge circuit lasted for years until I lost it. Now for my present build, I need a precharge circuit for 100V, 180A. I can still use IRFB4115s but will need to change the board layout - more fets, heatsink. What if to just use a DPDT switch wired to a contactor ...
by shinyballs
Oct 22 2017 8:04am
Forum: Items for Sale - New
Topic: QS MOTOR,0.5-14kW Electric Hub Motor Manufacture China
Replies: 1160
Views: 175652

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

Can the QSMOTOR 10inch 205 V3 50H scooter hub fit on a 130/60-10 tire?
by shinyballs
Oct 12 2017 4:59pm
Forum: Battery Technology
Topic: Boston-Power Swing 5300 Li-ion cell test
Replies: 29
Views: 5227

Re: Boston-Power Swing 5300 Li-ion cell test

What's the recommended way to connect the cells? Can you just spot weld the ends using .15mm nickel?
Thanks for sharing your test results.
by shinyballs
Oct 04 2017 6:45am
Forum: Stand-up E-scooters and E-skateboards
Topic: Velocifero Mad scooter upgrade
Replies: 3
Views: 1472

Velocifero Mad scooter upgrade

Delivered on a thick cardboard box weighing 120lbs, so scooter weighs approx 110lbs. 52 inches long. The frame, fork, swing arm and seat post are made of steel. The battery frame housing has enough room for 200 18650 cells plus other things. I'll use either Samsung INR18650-35E or Panasonic NCR18650...
by shinyballs
Oct 02 2017 7:08pm
Forum: Items for Sale - New
Topic: QS MOTOR,0.5-14kW Electric Hub Motor Manufacture China
Replies: 1160
Views: 175652

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

QSMOTOR,
Do you have a high kV hub motor that can fit a Velocifero mad scooter? motor should have a freewheel-sprocket mount and disk brake mount.

Dropout width: 200mm
tire size: 145/70-6
by shinyballs
Oct 02 2017 4:03am
Forum: Stand-up E-scooters and E-skateboards
Topic: Razor E300s upgrade
Replies: 12
Views: 2046

Re: Razor E300s upgrade

Everything about this scooter is crap except the frame. Cleaned, painted and vented the motor ; just warm when ran continuously for 1Kw. The fork broke twice. So, I inserted a pipe inside the tube and welded the bottom edge and drilled 2 self-tapping screws on the front and back. Have been riding it...
by shinyballs
Nov 14 2016 4:32am
Forum: E-Bike Technical
Topic: 4 wire throttle
Replies: 5
Views: 490

Re: 4 wire throttle

Got the wires sorted. Didn't bother opening it(not easy without cracking the plastic clips). I'm not connecting the crappy meter.

Red = 5v
Blue = Gnd
Green = throttle signal output
Yellow = battery pack voltage
by shinyballs
Nov 10 2016 9:15pm
Forum: E-Bike Technical
Topic: 4 wire throttle
Replies: 5
Views: 490

4 wire throttle

Figuring out the wiring of this throttle. Wire colors are blue,green,yellow and red. Red is most likely 5v or battery(+).
by shinyballs
Aug 31 2016 12:54am
Forum: E-Bike Non-hub Motor Drives
Topic: eZip-iZip-Currie parts-n-such
Replies: 15
Views: 6005

Re: eZip-iZip-Currie parts-n-such

I have the same controller at 36V. Which wire is used to switch "On"? Connected to a 41.6V psu/charger; charging port, [blue - red] shows the same voltage. Do you just jumper the [black - red]? IMG_0257 - Copy.JPG YIYUN YK31C 24-36V compatible controller 28A Requires connectors adapted! http://endle...
by shinyballs
Aug 28 2016 7:00pm
Forum: Items for Sale - New
Topic: 12F Sine/Silent 36-100v/45A Controller iOS/Android,GPS-$139
Replies: 137
Views: 15459

Re: 12x Sino/Silent 36-100v/45A Controller Program/GPS/etc -

For how long from the date of purchase?

Powervelocity.com wrote:I warranty it against defects upon arrival and if used at rated load.

shinyballs wrote:Do you offer warranty?
by shinyballs
Aug 27 2016 8:49pm
Forum: Items for Sale - New
Topic: 12F Sine/Silent 36-100v/45A Controller iOS/Android,GPS-$139
Replies: 137
Views: 15459

Re: 12x Sino/Silent 36-100v/45A Controller Program/GPS/etc -

Can you elaborate on the little mod?
Powervelocity.com wrote:Yes, it does with a little mod.
shinyballs wrote:I'm looking for a low price sine wave controller. Does this work for a 10s lithium nmc pack (~36V), lvc set to 30V?