Search found 22 matches

by EXPERIMENTAL EV
Jan 20 2017 2:52am
Forum: E-Bike Technical
Topic: Removing lvc on 48v controller.
Replies: 18
Views: 2126

Re: Removing lvc on 48v controller.

Only drops 2V under a 3A load. roflmao. How much do you think it will drop under a 30A load. Those old sla batteries are shot. Under a normal takeoff, with maybe 15a draw my 10ah battery pack doesn't sag even 1V. Forget the LVC being too high. That's not your problem. The sla battery pack is. Under...
by EXPERIMENTAL EV
Jan 19 2017 3:05pm
Forum: E-Bike Technical
Topic: Removing lvc on 48v controller.
Replies: 18
Views: 2126

Re: Removing lvc on 48v controller.

:D Sorry I can't help either. If you're still open to advice, I'd stop focusing on changing the LVC and check the current the motor is pulling at no load. And what the voltage sags to. I have actually already had a look at those. The battery doesnt drop more than 2v and the motor only draws 3 amps....
by EXPERIMENTAL EV
Jan 19 2017 3:43am
Forum: E-Bike Technical
Topic: Removing lvc on 48v controller.
Replies: 18
Views: 2126

Re: Removing lvc on 48v controller.

999zip999 wrote:Battery what battery how about a pic in a link battery?
It is a homebuilt 9ah 48v sla panasonic pack. I dont mean to be rude but can someone please just tell me how to remove the lvc on the controller :roll:
by EXPERIMENTAL EV
Jan 18 2017 3:26pm
Forum: E-Bike Technical
Topic: Removing lvc on 48v controller.
Replies: 18
Views: 2126

Re: Removing lvc on 48v controller.

OK, if you have to turn the battery off and back on to get it to turn the motor again, it's not the controller LVC cutting it off, it's the battery bms. The controller will reset itself when it sags below lvc. Just letting up on the throttle and turning it again should start the motor turning again...
by EXPERIMENTAL EV
Jan 18 2017 2:18pm
Forum: E-Bike Technical
Topic: Removing lvc on 48v controller.
Replies: 18
Views: 2126

Re: Removing lvc on 48v controller.

If I understand that correctly, I'd be looking at part of the battery either sagging down below cell level LVC (ie a bad cell) or going into over current protection. If the battery charges to 53V (same as the charger) then surely it's not controller LVC? More details like the battery, what LVC you ...
by EXPERIMENTAL EV
Jan 18 2017 4:38am
Forum: E-Bike Technical
Topic: Removing lvc on 48v controller.
Replies: 18
Views: 2126

Re: Removing lvc on 48v controller.

Hi there, I just found out the problem with my controller, the lvc is too high even though im using a 48v battery with a 48v controller. I was wondering if anyone could assist me in this daunting task to my noobish eyes. This is my controller: https://www.aliexpress.com/item/1500W-1600W-Brushless-D...
by EXPERIMENTAL EV
Jan 17 2017 9:53pm
Forum: E-Bike Technical
Topic: Removing lvc on 48v controller.
Replies: 18
Views: 2126

Re: Removing lvc on 48v controller.

I am very confident opening it and soldering. I have already disasembled it twice while I was searching for the problem. I am very confident at soldering so that wont be a problem. Here are some pics.
by EXPERIMENTAL EV
Jan 17 2017 7:12pm
Forum: E-Bike Technical
Topic: Removing lvc on 48v controller.
Replies: 18
Views: 2126

Removing lvc on 48v controller.

Hi there, I just found out the problem with my controller, the lvc is too high even though im using a 48v battery with a 48v controller. I was wondering if anyone could assist me in this daunting task to my noobish eyes. This is my controller: https://www.aliexpress.com/item/1500W-1600W-Brushless-DC...
by EXPERIMENTAL EV
Jan 16 2017 7:11pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Motor runs for a second then stops
Replies: 9
Views: 1144

Re: Motor runs for a second then stops

Gregory wrote:What are you using to power it?

Im using a 48v 9ah battery pack, I have tested it and it only drops 1v so lvc is not a problem
by EXPERIMENTAL EV
Jan 16 2017 7:06pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Motor runs for a second then stops
Replies: 9
Views: 1144

Re: Motor runs for a second then stops

Well from the way its spinning up I'd say there is nothing wrong with the motor connections. here is a question: how come you are using a potentiometer instead of the throttle you have there? I'm guessing you either got the potentiometer hooked up wrong or it's broken. I would try the hall effect t...
by EXPERIMENTAL EV
Jan 16 2017 1:26am
Forum: E-Scooter and Motorcycle General Discussion
Topic: Motor runs for a second then stops
Replies: 9
Views: 1144

Re: Motor runs for a second then stops

Is there a way to convert my controller to sensorless?

Thanks
by EXPERIMENTAL EV
Jan 15 2017 9:50pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Motor runs for a second then stops
Replies: 9
Views: 1144

Re: Motor runs for a second then stops

If it is the halls, How would i go about correcting them?
by EXPERIMENTAL EV
Jan 15 2017 8:37pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Motor runs for a second then stops
Replies: 9
Views: 1144

Motor runs for a second then stops

Hi there, I recently recieved a brushless motor from aliexpress and it runs for a second and then cuts out everytime and sometimes it just doesnt even run at all. the motor and controller I ordered are: https://www.aliexpress.com/item/1500W-48V-Brushless-Electric-DC-Motor-1500W-Electric-Scooter-BLDC...
by EXPERIMENTAL EV
Jan 11 2017 2:46am
Forum: E-Scooter and Motorcycle General Discussion
Topic: 1500w 60kmh Optimistic?
Replies: 4
Views: 889

Re: 1500w 60kmh Optimistic?

It's going to depend on the no load speed of the respective motors. If the electric motor turns at exactly the same no load speed as the 50cc gasser, then you might be a touch over geared assuming the 1.8Kw is an honest figure, and you're only actually making 1.5kw from the inrunner. The actual ele...
by EXPERIMENTAL EV
Jan 08 2017 4:28am
Forum: E-Scooter and Motorcycle General Discussion
Topic: 1500w 60kmh Optimistic?
Replies: 4
Views: 889

1500w 60kmh Optimistic?

Hello there. I am currently waiting for a 1500w inrunner scooter motor and controller. I will be putting this in a miniature dirt bike frame, which used to have a 49cc pos in it producing 1.8kw. With my current gear ratio I have a No load top speed of 60 kmh, Is this gearing too tall? Should I incre...
by EXPERIMENTAL EV
Dec 20 2016 9:42pm
Forum: Battery Technology
Topic: What Kind of Battery is this.
Replies: 1
Views: 301

Re: What Kind of Battery is this.

Never mind. I found it online. It is a Sanyo 103450 3.7V, 1800mAh Li-ion Battery
by EXPERIMENTAL EV
Dec 20 2016 7:35pm
Forum: Battery Technology
Topic: What Kind of Battery is this.
Replies: 1
Views: 301

What Kind of Battery is this.

Hi there, I was recently disassembling a laptop battery Upon opening it I noticed there was two different kinds of battery in it. There were four 18650's and four Unknown, I took a closer look at the unknows and thought they looked like prismatic cells of some sort. Then I measured with a multimeter...
by EXPERIMENTAL EV
Apr 26 2016 4:19pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Will My Electric Skate Board setup work?
Replies: 3
Views: 411

Re: Will My Electric Skate Board setup work?

I am going with 6s because i am trying to go on the cheap and hv esc's are quite expensive.
i am using a gear ratio of 4:1
by EXPERIMENTAL EV
Apr 26 2016 4:03pm
Forum: Stand-up E-scooters and E-skateboards
Topic: Will My Electric Skate Board setup work?
Replies: 3
Views: 411

Will My Electric Skate Board setup work?

Hi I was wonder if the motor and gear ratio that i have will work well http://www.hobbyking.com/hobbyking/store/__39374__Turnigy_HeliDrive_SK3_Competition_Series_4962_500kv_700_90_size_heli_AU_Warehouse_.html I will only be using this at 6s. i have a gear ratio of 4:1 with a wheel circumference of 2...