Search found 125 matches

by trazor
Apr 17 2019 11:43am
Forum: E-Bike Non-hub Motor Drives
Topic: Kuberg Freerider Extended Swingarm Project
Replies: 152
Views: 19103

Re: Kuberg Freerider Extended Swingarm Project

They work now. Nice skid plate!. Which front fender are you using? How it works for you? Looks a bit short on the front so maybe some mud fliies to helmet/face at higher speeds. I'm on the research of the perfect fender.
by trazor
Apr 17 2019 3:06am
Forum: E-Bike Non-hub Motor Drives
Topic: Kuberg Freerider Extended Swingarm Project
Replies: 152
Views: 19103

Re: Kuberg Freerider Extended Swingarm Project

Every time I take this bike out I get the EV grin all over again...its the only bike I own that does it Running mint no issues at all, big bike im on tippy toes when I stop but I love it! It is just so fast and fun to launch and the power to weigh ratio Is superb. I am liking the eastgem wheels a l...
by trazor
Apr 04 2019 6:57pm
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 977
Views: 65855

Re: bluetooth BMS?

In retrospective... I'm not sure if I tested correctly the charge mosfets.
I desoldered all discharge mosfets. Two in total were short.
I desoldered all charge mosfets. All were good.

Now I've a dead BMS :roll:
by trazor
Apr 04 2019 5:18pm
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 977
Views: 65855

Re: bluetooth BMS?

You guys were right. I touched every mosfet on one side and one was much hotter and marked it. I took out five mosfets and tested them and the marked one was shorted. They are HY3410. Now I've another problem, I think I burnt the logic stage :( On the board I found (left from the previous operation)...
by trazor
Apr 04 2019 3:37am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 977
Views: 65855

Re: bluetooth BMS?

Hi Mates. I'm having a new kind of problem with a 20s bluetooth BMS ( https://es.aliexpress.com/item/20S-72V-or-84V-Lithium-Ion-battery-Smart-BMS-with-UART-communication-port-Li-ion-battery/32820588136.html?spm=a2g0s.9042311.0.0.274263c0EDoQXK ) The problem I noticed first is that when I put a 300W ...
by trazor
Apr 02 2019 5:38pm
Forum: E-Bike Non-hub Motor Drives
Topic: New build, BHT mid-drive "direct", custom frame
Replies: 134
Views: 17504

Re: New build, BHT mid-drive "direct", custom frame

Awesome! Even if you race alone, please use some protection (if you are low on cash buy the first items). I've purchased the cheapest stuff on amazon and I really like the products. Gloves: https://www.amazon.com/gp/product/B07B4SZBP1/ref=oh_aui_search_asin_title?ie=UTF8&psc=1 Boots: https://www.ama...
by trazor
Apr 02 2019 1:16am
Forum: E-Bike Non-hub Motor Drives
Topic: OpenEMoto
Replies: 62
Views: 7425

Re: OpenEMoto

It happens that I've been recording what I built in the last months and finally I'm editing the hundred hours to make something condensed that people can watch and maybe take some build techniques that don't require expensive tooling.

Here is #1 Swingarm
by trazor
Mar 30 2019 12:26am
Forum: E-Bike Non-hub Motor Drives
Topic: OpenEMoto
Replies: 62
Views: 7425

Re: OpenEMoto

IMG_20190128_174433.jpg Testing automotive paint. Silicone plugs in place. I'm fed up of rust. Powder coating is the way to go. I got great results from a home powder coat kit I got from Eastwood Company. I think you are right because after painting one of my moto with 3 layer automotive paint and ...
by trazor
Mar 24 2019 11:09pm
Forum: E-Bike Non-hub Motor Drives
Topic: OpenEMoto
Replies: 62
Views: 7425

Re: OpenEMoto

IMG_20190322_001749.jpg
I've made "quick release" headlamp mounts for my two fork models (Marzocchi 380 2016 and DNM-USD8). https://github.com/eroldan/OpenEMoto/tr ... r/Headlamp

Check the BOM for details. https://github.com/eroldan/OpenEMoto/bl ... mp/BOM.txt
by trazor
Mar 08 2019 10:15pm
Forum: E-Bike Build Threads / Photos & Video
Topic: WORLDS BEST DIY E-MINI MOTO DIRT BIKE!!!
Replies: 2
Views: 364

Re: WORLDS BEST DIY E-MINI MOTO DIRT BIKE!!!

:lol: :lol: :lol: :lol: The title says it all.
Indeed it looks silly, but it probably give you lot of fun building and riding it.
Those footpegs from electric unicycle are so out of place :lol:
Nice build taking into acount the sourced parts. :bigthumb:
by trazor
Mar 03 2019 1:39am
Forum: E-Bike Non-hub Motor Drives
Topic: New build, BHT mid-drive "direct", custom frame
Replies: 134
Views: 17504

Re: New build, BHT mid-drive "direct", custom frame

Qgx0rt-1LCw i should not have procrastinated w/ the sensor install. i would've seen that the yellow phase wire was rubbing against the rotor. eventually the insulation and copper wire wore off and started acting like brushes, hence the scorch marks quality on this BHT motor is really crap :lol: Bum...
by trazor
Feb 25 2019 1:49am
Forum: E-Bike Non-hub Motor Drives
Topic: New build, BHT mid-drive "direct", custom frame
Replies: 134
Views: 17504

Re: New build, BHT mid-drive "direct", custom frame

https://i.imgur.com/8uJow6E.jpg https://i.imgur.com/5oL4JRm.jpg will do the shunt mod ASAP and also the temp probe on the windings. if power is still inadequate and there's still some thermal headroom i'll probably get the kelly controller speaking of thermal headroom. what's the safe max temp of t...
by trazor
Feb 24 2019 12:21am
Forum: E-Bike Non-hub Motor Drives
Topic: New build, BHT mid-drive "direct", custom frame
Replies: 134
Views: 17504

Re: New build, BHT mid-drive "direct", custom frame

Are you monitoring temps inside the motor? By the time the heat soaks through to the case it could be way too late for the windings. Great job on the bike build by the way! I agree with that. I've fixed the temperature sensor (the same as the picture, with the remote display) inside the motor, on t...
by trazor
Feb 22 2019 12:58am
Forum: E-Bike Non-hub Motor Drives
Topic: New build, BHT mid-drive "direct", custom frame
Replies: 134
Views: 17504

Re: New build, BHT mid-drive "direct", custom frame

https://i.imgur.com/vyME3vg.jpg haha i was looking at the same thing! but blue https://i.imgur.com/O6fWxf6.jpg i actually don't mind bending those cheapo pedals. but they might deform the frame during a crash. so yes i'll be switching to pegs soon. will add a bolt-on mounting plate here also the 17...
by trazor
Feb 21 2019 6:32pm
Forum: E-Bike Non-hub Motor Drives
Topic: New build, BHT mid-drive "direct", custom frame
Replies: 134
Views: 17504

Re: New build, BHT mid-drive "direct", custom frame

Congatulations! after all those years, finally, a complete LEV! :thumb: Keep practicing and post a video! haha thanks! this project took way too long :lol: might take another year to get it painted :lol: sgkiock4p9M Looks good!. The only thing I don't like are the footrests that are common bike ped...
by trazor
Feb 20 2019 9:09am
Forum: Stand-up E-scooters and E-skateboards
Topic: 10kW stand-up scooter with air suspension
Replies: 142
Views: 8070

Re: 5200W stand-up scooter with air suspension

alex_2d wrote:
Feb 20 2019 8:10am
A little bit to revive the topic :)
The batteries are here!
Li-Ion, 22s, 92.4v, 40000MaH, 4C discharge
LdWK8D7gBfI.jpg
Where did you source those pouch batteries? I'm looking for a good deal and always end with hobbyking preassembled packs :roll:
by trazor
Feb 19 2019 2:16am
Forum: E-Bike Non-hub Motor Drives
Topic: New build, BHT mid-drive "direct", custom frame
Replies: 134
Views: 17504

Re: New build, BHT mid-drive "direct", custom frame

Overclocker wrote:
Feb 18 2019 10:49am
Image

first test went well
Congatulations! after all those years, finally, a complete LEV! :thumb:
Keep practicing and post a video!
by trazor
Feb 16 2019 1:19am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 977
Views: 65855

Re: bluetooth BMS?

Hi all I spent some time to clean-up and translate the interface of JBDtools , the latest (v1.A) version. As I still haven't received my BMS unit, I surely missed some fields or made translation quirks. Please let me know. https://images2.imgbox.com/f4/78/GP3t7HYV_o.jpg http://cjoint.net/?b04euy5jp...
by trazor
Feb 12 2019 3:27pm
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 977
Views: 65855

Re: bluetooth BMS?

I have one of this bluetoot BMS,it is 10S.Can i meke it 14S when sort 13 and 14 pin?Has anyone tried this? Post a picture, without the aluminum panel on the cell numbers labels side. These BMS come in ranges. 15 to 20S, 20 to 30S, etc. We don't know your model. 15s smart bms10.jpg it is absolutely ...
by trazor
Feb 12 2019 12:47pm
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 977
Views: 65855

Re: bluetooth BMS?

kocetoMR wrote:
Feb 12 2019 12:40pm
I have one of this bluetoot BMS,it is 10S.Can i meke it 14S when sort 13 and 14 pin?Has anyone tried this?

Post a picture, without the aluminum panel on the cell numbers labels side. These BMS come in ranges. 15 to 20S, 20 to 30S, etc. We don't know your model.
by trazor
Feb 11 2019 1:20am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 977
Views: 65855

Re: bluetooth BMS?

In my experience, reconfiguring a 20s to 16s BMS from James requires: 1) Rewire the cell pins (some pads are joined) probably, but how to find out the right combo? i dont want to kill something ;( Some examples. Apply to other boards 15s smart bms10.jpg 15s smart bms11.jpg 15s smart bms12.jpg 15s s...
by trazor
Feb 10 2019 5:31am
Forum: Battery Technology
Topic: bluetooth BMS?
Replies: 977
Views: 65855

Re: bluetooth BMS?

iam freakin out right now.... i have also a 20s BT BMS from JPB/James. i wanted to use it for a 16s Battery. So in the PC Software/Settings i set it up to 16s. but it does not show me the last 4 cells. if i measure at the battery balance wires everything is fine. 2 of the temp sensors (3+4) show me...
by trazor
Feb 08 2019 3:50am
Forum: E-Bike Non-hub Motor Drives
Topic: OpenEMoto
Replies: 62
Views: 7425

Re: OpenEMoto

by trazor
Feb 08 2019 3:47am
Forum: Items Wanted
Topic: Fork Fenders DNM USD-8 upside down
Replies: 3
Views: 374

Re: Fork Fenders DNM USD-8 upside down

Too expensive for those dumb plastic parts. I've made one myself using Sintra plastic, heat gun and can of black paint.

https://www.foamboardsource.com/sintra- ... board.html
IMG_20190208_042203.jpg
by trazor
Feb 06 2019 3:59am
Forum: E-Bike Non-hub Motor Drives
Topic: New build, BHT mid-drive "direct", custom frame
Replies: 134
Views: 17504

Re: New build, BHT mid-drive "direct", custom frame

Sean9002, i think it lost pressure, which kept the rebound needle from backing off the orifice, thus the super slow rebound. full diagnosis soon trazor, sure. actually i haven't filled it w/ oil yet, that's the messy part. will make a video soon. btw what's your complete frame weight without shock ...