Q: Cengalo is a Startup for a 4 wheeled lightweight car with 2 bike Hub motors on the rear wheels.
We plan a speed of approx 75 Km/h, downhill, with 20 inch wheels.
Can you offer the 48V 52V 1500W front spoke hub motor – electric bike motor with appox 800 rpm?
Motor type: brushless bike motor
Voltage: 48V / 52V
Power: 1500W
Max efficiency: 90.5%
RPM: 600
Mechanical brake: V
Cable location: shaft end, Left
Cable length:150cm / 60″
Install: spacing of 100mm fork
Noise: < 60 db
Surface: Black painted
Net weight: 6.9kg / 15.2 lbs
Gross weight: 7.8 kg ( after packing )
A: 48V 52V 1500W front spoke hub motor - electric bike motor with appox 600 rpm.
It's very fast. (Default the fastest)
But also, we can make faster bike motor (over 700rpm)
Q: The higher speed hub motor can be interesting for the vehicle. Than we can use 48V battery.
We have yet to decide if the vehicle is 48 or 72 volts batteries.
With the higher voltage (72V) battery, the same hub motor would have a 1.5 times higher speed.
Do you have experience what is better for the car?
A: This 1500w bike motor max use about 2.5mm phase wires. Can work with 72v battery. But uphill,if cable too hot,should stop at once.
Q: Can you give a wholesale quote for the 1500W front spoke hub motor
100 psc / 500 pcs / 1000 pcs per order?
We calculate the Cangalo Smartcar with this offer.
Unfortunately we can't place an order until 28.2.
We have to develop the vehicle, Cengalo Smartcar, first.
You always answered quickly and hopefully will continue to do good prices in the future, so we can well imagine ourselves with Leafbike as a long-term supplier work.
Monthly Archives: February 2023
Inquiry Hub bike motor
motor controller cut off voltage
Each motor controller has min cut off voltage and max working voltage.
For example:
48v Controller’s cut off at 40v. Less than 40v, not work.
36v Controller’s cut off at 30v. Less than 30v, not work.
For 48v electric bike motor kit system.We recommend reach set cut off voltage to over 42v by LCD. Less than 42v,should charge battery. It’s good for battery.
These days,all kinds of lithium batteries was made by 13 series connection or 14 series connection cells to be 48v, 52v.
Each cell – min about 2.8v , max about 4.2v
13 series – 4.2v x 13 = 54.6v
14 series – 4.2v x 14 = 58.8v
Overdischarge and overcharge both Not good for battery.
For example: if set it to 40v (controller’s cut off voltage is 40v)
2.8 x 14 = 39.2v (about 40v)
If 14 series connection cells ‘s min voltage to be 2.8v at the same time. That’s good.
But ride half a year, cut off voltage still 40v.
If No. one cell ‘s min voltage is 2.7v, second is 2.9v, third cell is 2.9v….
Total voltage is 40.4v ( 2.9 x 13 + 2.7v)
If first cell’s voltage to be 2.7v, it’s overdischarge, battery can’t to be charged. Battery is broken.
So we recommend charge battery when it reach about 42v or over.
If min 42v
No. one cell ‘s min voltage is 2.9v, second is 3.0v, third cell is 3.0v….
Total voltage is 41.9 v ( 3.0 x 13 + 2.9v)
New battery doesn’t have this issue. If ride 1-2 month, we recommend charge battery @ 42v or over.
For example: cell phone, only leave 20%,need to charge. If use out all that will break cells, also very hard to charge.
So we recommend set cut off voltage by LCD that over controller’s cut off voltage.
Why choose leaf motor controller
Three years ago, leaf motor started to design controllers,manufacture controllers,test controllers,modify and re-test. Day by day. three years past,compare with other controllers,leaf three mode controllers are the best.
In market,there are square wave, sine wave, two kinds of brushless controllers that drive brushless with hall sensor motor.Every one knows,hall sensor is electronic component.It works in the rotating rotor.It’s easy to be broken.
If one hall sensor is broken, the electric bike can’t work. Need to replace hall, but it’s very hard to replace hall.Not easy. Replace the whole of winding rotor, it’s too expensive.
In past,leaf sell KT controller,met hall sensor issue, should replace the whole of winding rotor to customer.
The price for one hall sensor is less than $1USD
But, the whole of winding rotor over $100USD includes shipping cost.
Replace winding rotor waste too much.
Sine 2019,leaf motor started to manufacture theirselves controllers.
Leaf Brand New electric motor controller with Sine wave, Square wave, No hall, three modes compatible.
What are three modes?
* First mode: Sine Wave Status – Motor without noise,Very quiet !
If one of motor hall sensor is broken, controller still can work in Sine Wave Status.
* Second mode: Square wave Status – Motor with a little noise, < 60db, speed is about 8% faster than Sine Wave Status. If two of motor hall sensors are broken, controller can work in Square Wave Status. * Third mode: No hall Status - Motor with a little noise, < 60db, speed is about 8% faster than Sine Wave Status. If all of three hall sensors are broken, controller can work in No hall Status. If your motor's hall sensors are broken, don't need to replace hall sensors. Just use this controller that can recover your motor to work. If you don't know how to match motor wires to controller. Just plug two blues together, controller into learning status and looking for correct working way. After 1-2 seconds, it can find correct working way,then disconnect these two blue wires' plugs. From now on,it always works with this kind of correct way.