Search found 86 matches

by chronosgarage
Mar 01 2021 6:03am
Forum: EBike Technical
Topic: 17 inch motorcycle rim with bicycle hub
Replies: 1
Views: 89

17 inch motorcycle rim with bicycle hub

I’m building a reverse trike. I want to lace the 36 hole bicycle hub with a motorcycle rim. The plan is to use bicycle spokes for the rim. I know from searching this forum that i need to have some spacer to get the nipples to seat properly in the motorcycle rim. But I can’t find info on the length o...
by chronosgarage
Feb 23 2021 7:42pm
Forum: E-Vehicles General Discussion
Topic: Votol EM-100 & EM-150 controllers
Replies: 1370
Views: 147293

Re: Votol EM-100 & EM-150 controllers

I want to make the correct settings. what do these parameters mean in each window? how do they work? 2.jpg I do not know what F, U, and D are, but i have figured out the others through testing. IO sets up the assigned function/wire for Output only, like the hall or RPM line. The SW sets the assigne...
by chronosgarage
Feb 22 2021 6:38am
Forum: E-Vehicles General Discussion
Topic: Votol EM-100 & EM-150 controllers
Replies: 1370
Views: 147293

Re: Votol EM-100 & EM-150 controllers

Hello group, I have a dead votol em150sp controller Can not respond to the pc program please someone if anyone has the bin file of the Votol em150sp Can from Siaecosys send it to me by miguelangel891123@gmail.com thanks. I already sent the firmware. But I can’t guarantee that it will work. I got it...
by chronosgarage
Feb 22 2021 2:11am
Forum: E-Vehicles General Discussion
Topic: Votol EM-100 & EM-150 controllers
Replies: 1370
Views: 147293

Re: Votol EM-100 & EM-150 controllers

PrashanBhatta wrote:
Feb 22 2021 12:51am
Paulflieg wrote:
Feb 19 2021 12:44pm
In calibration mode, on page 3
Could you provide me this software? because in the version I m using, there is no such setting for temperature.
I send the firmware to your email.
by chronosgarage
Feb 21 2021 10:42pm
Forum: EBike Troubleshooting
Topic: Help with stray voltage
Replies: 17
Views: 264

Re: Help with stray voltage

Thank you for your reply. I’ve tested the resistance between the frame and the battery, the resistance is 0.5 to 0.6 mega ohm. I have not connect the controller or the hub motor. Is there anything that should be fixed? Not really. That sounds pretty normal. You could try hooking up the controller a...
by chronosgarage
Feb 21 2021 10:41pm
Forum: EBike Troubleshooting
Topic: Help with stray voltage
Replies: 17
Views: 264

Re: Help with stray voltage

Maybe it's a stupid test, but if you take the batteries out of the frame and put them on something next to the bike, is the voltage still there? Thank you for your reply. My battery is placed within the frame and also have 3 different place that is connected at every parallel cell group, so it beco...
by chronosgarage
Feb 21 2021 10:37pm
Forum: E-Vehicles General Discussion
Topic: Votol EM-100 & EM-150 controllers
Replies: 1370
Views: 147293

Re: Votol EM-100 & EM-150 controllers

This morning something marvelous but mysterious happened. When I import new parameters file to the controller, all pf the sudden the bike is normal again. Even though all the parameters match the previous setting. It’s weird, but i’m glad that it all worked out. Has anyone here ever experienced some...
by chronosgarage
Feb 21 2021 10:36pm
Forum: EBike Troubleshooting
Topic: Throttle problem
Replies: 2
Views: 86

Re: Throttle problem

Screen shots of your controller's setpoints. Type of throttle, hall or potentiometer? Throttle output voltage readings. Battery particulars. New build or running for some time? The more information, the better... Regards, T.C. Thank you for your reply. The bike last controller was burned because of...
by chronosgarage
Feb 21 2021 10:57am
Forum: E-Vehicles General Discussion
Topic: Votol EM-100 & EM-150 controllers
Replies: 1370
Views: 147293

Re: Votol EM-100 & EM-150 controllers

I have a problem with my Votol EM100 controller. When I give it a full throttle, the throttle open up just a little bit, or sometimes it starts normal for a few second and than the speed goes down to a very low speed. My setup is qs205 2000w 72v with votol em100 I have check the throttle voltage, ha...
by chronosgarage
Feb 21 2021 10:52am
Forum: EBike Troubleshooting
Topic: Throttle problem
Replies: 2
Views: 86

Throttle problem

My setup is QS205 2000w 72v hub motor with Votol EM100 controller. The problem is when i give it a full throttle, it’s only open the throttle a little bit, or sometimes is start well for a few seconds and then the throttle seem to wind down to a very low speed even when i give it a full throttle. I ...
by chronosgarage
Feb 21 2021 4:17am
Forum: EBike Troubleshooting
Topic: Help with stray voltage
Replies: 17
Views: 264

Re: Help with stray voltage

Try measuring resistance between the frame and battery negative. If you see a low reading, like ohms, you have a short. If the meter shows high, more than megohms, then it's good. Your meter is very sensitive and you can get stray readings like that just from moisture or stray resistance in the con...
by chronosgarage
Feb 20 2021 4:39am
Forum: EBike Troubleshooting
Topic: Help with stray voltage
Replies: 17
Views: 264

Re: Help with stray voltage

Try measuring resistance between the frame and battery negative. If you see a low reading, like ohms, you have a short. If the meter shows high, more than megohms, then it's good. Your meter is very sensitive and you can get stray readings like that just from moisture or stray resistance in the con...
by chronosgarage
Feb 19 2021 10:33pm
Forum: EBike Troubleshooting
Topic: Help with stray voltage
Replies: 17
Views: 264

Re: Help with stray voltage

The bms is not mounted on the frame and it is well insulated. The contactor is mounted to the frame, but when I dismount the contactor, the voltage remained the same.

I don’t use ground on the frame.

Sorry for the double post.

Thank you for your reply.
by chronosgarage
Feb 19 2021 10:31pm
Forum: EBike Troubleshooting
Topic: Help with stray voltage
Replies: 17
Views: 264

Re: Help with stray voltage

Thank you for your reply
by chronosgarage
Feb 19 2021 8:38pm
Forum: EBike Troubleshooting
Topic: Help with stray voltage
Replies: 17
Views: 264

Re: Help with stray voltage

Thank you so much for your reply. I will check the amp current flow...
by chronosgarage
Feb 19 2021 8:03pm
Forum: EBike Troubleshooting
Topic: Help with stray voltage
Replies: 17
Views: 264

Help with stray voltage

My setup is 2000w hub motor with 20S12P and 20S9P battery connected parallel in each of the battery parallel connection to a single bms, the bms is connected to a contactor. I have not connect the controller and the hub motor. The last time my controller blew because of a pinch from the main positiv...
by chronosgarage
Feb 19 2021 9:53am
Forum: EBike Troubleshooting
Topic: Help with stray voltage
Replies: 17
Views: 264

Help with stray voltage

My build is 2000w hub motor with 20S12P and 20S9P battery connected in parallel in each cell parallel group. The two battery is connected to one bms that connected to the contactor. I have not connect the controller and the hub motor at all. The problem is I have a voltage reading when I connect my ...
by chronosgarage
Dec 04 2020 7:44pm
Forum: Battery Technology
Topic: Parallel battery charging with different bms
Replies: 9
Views: 346

Re: Parallel battery charging with different bms

Are you planning on creating a relatively permanent pack from the two sub-packs, keeping them in parallel during use most times? Yes, that’s the idea. Then connect the 1S cell-level groups between packs, and just have one BMS manage it as one integrated pack for monitoring and balancing if you use ...
by chronosgarage
Dec 04 2020 7:43pm
Forum: Battery Technology
Topic: Parallel battery charging with different bms
Replies: 9
Views: 346

Re: Parallel battery charging with different bms

id adjust my charger voltage to 4.15v/cell. 20s would be 83v instead of 84v or 4.1v/82v and charge both packs while theyre paralleled together. that way the bms wont become an issue while charging you can always balance charge the packs separately once a month or whenever, are you still using the r...
by chronosgarage
Dec 04 2020 1:15am
Forum: Battery Technology
Topic: Parallel battery charging with different bms
Replies: 9
Views: 346

Re: Parallel battery charging with different bms

id adjust my charger voltage to 4.15v/cell. 20s would be 83v instead of 84v or 4.1v/82v and charge both packs while theyre paralleled together. that way the bms wont become an issue while charging you can always balance charge the packs separately once a month or whenever, are you still using the r...
by chronosgarage
Dec 04 2020 12:45am
Forum: Battery Technology
Topic: Parallel battery charging with different bms
Replies: 9
Views: 346

Re: Parallel battery charging with different bms

Chalo wrote:
Dec 04 2020 12:22am
Charge them together (in parallel) and discharge them together. That will keep them operating as a single pack.
Yes. My question is how to wired the charger on the 2 battery.
by chronosgarage
Dec 04 2020 12:44am
Forum: Battery Technology
Topic: Parallel battery charging with different bms
Replies: 9
Views: 346

Re: Parallel battery charging with different bms

john61ct wrote:
Dec 04 2020 12:40am
Are you planning on creating a relatively permanent pack from the two sub-packs, keeping them in parallel during use most times?
Yes, that’s the idea.
by chronosgarage
Dec 04 2020 12:05am
Forum: Battery Technology
Topic: Parallel battery charging with different bms
Replies: 9
Views: 346

Parallel battery charging with different bms

I’m sorry if this is a newbie question. I have 2 li ion battery, 20S9P and 20S12P. They have a different type of bms. The 20S9P battery have a common - for charging and the 20S12P have a different - for charging. If i parallel the 2 batteries, how do I connect the charger? Because if I parallel the ...
by chronosgarage
Dec 01 2020 3:22am
Forum: Battery Technology
Topic: Charge controller for li ion 20S
Replies: 7
Views: 368

Re: Charge controller for li ion 20S

I use a "Hawkeye 808" to monitor the input current and stop the charge at undercurrent ( of the line) or overcurrent ( of the line). Trips a relay disconnection at a certain mA adjustable. Does it work for DC ? The datasheet doesn't say. Seems to imply AC (since it is line powered by indu...
by chronosgarage
Nov 30 2020 8:12pm
Forum: Battery Technology
Topic: Daisy chain active balancer
Replies: 11
Views: 491

Re: Daisy chain active balancer

I believe the problem with these switched inductor and capacitor balancers is that the balancing current is proportional to the voltage difference. So my understanding is that the balance current tapers off and it gets quite slow as the cell voltages get closer. I think so too, just like a charger.