Monthly Archives: December 2021 - Page 8

29 inch electric hub motor kit have problems with the cassette

Posted by on December 28, 2021 Comments Off on 29 inch electric hub motor kit have problems with the cassette

I ordered the 48v 1500W electric bike kit, with cassette.
I have problems with the cassette, the cassette is wider than where the dropouts sit around the axle.
So the hub motor wheel with the cassette on is wider than 135mm.
My bike frame is 135mm, and the website said it would fit on a 135mm frame.
When the cassette is on the hub motor wheel and i put the electric bike motor wheel on the bike, the frame grinds against the cassette when I tighten the electric bike motor wheel.
I have made it work using spacers so it spins freely, but the wheel is offset to one side now and i think my frame is spread wider. It is an aluminium frame.
Also the website said max 7 speed gear, but the cassette is for a 9 speed gear, which is also mounted now, is it suppose to be able to take a 9 speed gear, or is that an accident?
Any advice on what to do?
Also, any advice on mounting the torque arms? My frame is aluminium.

Steel is okay.But Aluminium is not good to make it larger. We worry if make aluminium frame to larger will break frame.
We recommend use 7 speed or 6 speed or single speed..

You will receive below goods:
1x pcs of 29 inch 48v 1500w rear hub motor wheel (black spokes, cassette)
1x pcs of 48V bldc motor controller (New version LCD controller)
1x pcs of LCD (New version LCD-003)
1x set of twist throttle
1x set of brake levers
1x pcs of three button switches ( use to control cruise,reverse..)
1x set of pedal assit ( It’s fit for European,if you don’t use,ONLY use throttle is okay )
Some spare spokes with plugs

——————————————-
How to set max speed?
If you feel motor is too fast,please set it to be low speed.
* Press “sw/middle button” from LCD more than 2 seconds,then LCD will display.
* Press “up & down button” together more than 2 sconds until 72 is flashing ( 72 is kmh, if you hope works 20mph / 32kmh, press “down” to be 32)
* Press “sw/middle” button one time to save,then 29 is flashing.. (29 is wheel size. Don’t set)
* Press “sw/middle” button one time to save,then kmh or mph is flashing..
* Press “sw/middle” button one time to save,then press “sw/middle” button more than 2 seconds until be back.

I would like to order a rear 48v 1500w hub motor wheel

Posted by on December 28, 2021 Comments Off on I would like to order a rear 48v 1500w hub motor wheel

I really like (love) your hub motors (they perform really well and last a long time) and now I have the time to get the one I always needed.
And here is a very similar bike which also has a 1000W option rear hub motor this one has multiple speeds, most probably 7.
I have asked the rear dropout widths. Will get back to you as soon as I know. And I have a steel frame with a 145mm dropout now which I can widen. I do not 100% understand the trade offs that you are referring to when you say that the rim doesn’t matter, it is the 3 inch tire that is the issue for this hub motor as the same electric bike motor would also go into a wider dropout fat bike which also has an even wider tire – 4 inches. I need more details to understand it more clearly.
And there are other options at the front end of the chain where we can move the chain out a bit:

1. the little chain guide can help – this is mounted to the seat tube to push out the chain from the frame and tire
2. move bottom bracket out to the right
3. or get a bottom bracket with a longer spindle
4. or add spacers between the crank and chaining

What hub motor do you use for your 2000w and higher power fat bike applications? What would I need to change to make any motor work?

I see that the 2000w electric bike motor is 74mm wide which is only 4 mm wider than the 1500w hub motor. I have attached some new pics of my bike from different angles so that you can see how much clearance I have and if I just go with a single speed setup, I will have enough clearance for the chain but in case I need to get additional clearance, I do have some options mentioned previously. So my question now is would a wider or higher power motor work better? I see that the 1500w motor works with dropouts of between 135 and 155mm. And then the 2000w one begins at 170mm. I can widen my dropout and since I won’t be needing the space of a 7 speed cassette, I should be able to have the chain clearance I need.

sensorless brushless hub motor power grid conditions

Posted by on December 28, 2021 Comments Off on sensorless brushless hub motor power grid conditions

sensorless brushless hub motor power grid conditions

Empty factory electronic control system of a power station from the higher blood pressure, voltage 6kV, step-down station outlet side of the maximum and minimum short-circuit capacity: Smax = 230MVA, Smin = 130MVA; Buck branch voltage power distribution station to empty rooms distance 400m, 185mm2 copper power cables from the two parallel transmission, converted to an empty factory 6kV cable into the line at the maximum and minimum short-circuit capacity:

Sbsmax = Sj / (Sj / Smax + XL) = 212.31 MVA
Sbsmin = Sj / (Sj / Smin + XL) = 123.46 MVA

Where Sj-base capacity, take 100MVA
XL-cable reactance per unit, XL = 0.041 Ω

Therefore, the empty factory 6kVA bus minimum and maximum capacity: Sbsmax = 212.31MVA, Sbsmin = 123.46 MVA; empty factory 6kVA single bus segment bus is running, 3700kW motor connected to the higher level bus segment Ⅰ, Ⅰ pre-bus segment connected load reactive power: Qx = 2.10MVA.

sensorless brushless bike motor of the main technical data

The ASU uses Shenyang Blower Factory production turbine air compressor, the drive motor for the Shanghai Motor Factory production T3700-4/1430 large high-voltage synchronous motor.

Motor parameters: Rated power: 3700kW; Rated voltage: 6kV; Rated current: 408A; Rated capacity: 4235kVA; starting current multiple of: 6 times; power factor: cosΦ = 0.9; Frequency: 50Hz; speed: 1500r/min; motor starting torque moments of relative value: 1.8; static resistance torque relative value units: 0.3; synchronous motor pull-in torque relative value: 1.18; flywheel torque: 385kg.m2; maximum allowable motor starting time: 40s; motor allows the number of consecutive starts: 2 times.

electric bike motor kit – error 01

Posted by on December 28, 2021 Comments Off on electric bike motor kit – error 01

Before less than one year, I bought electric bike motor kit from you.
Everything is perfect. But today, when I am went to ride, so LCD started writing error. Exactly error 1 , what is fault of twist throttle.
The throttle is always in full position what means that bike still accelerate. I attached photos. I already have behind me exactly thousand kilometers and i started ride from June.

I tried find out where is mistake and I have suspicion that hall sensor inside of throttle is dead. Supply voltage (black+red) is 4,32V what is ok, but output voltage (blue) is in basic position of throttle is 2,0V and full position of throttle is 2,7V. (I don’t know right values)
Can you help me with this problem, please?

Please press “up” to make it be “1 or 2 or 3 or 4 or 5”
Can’t be 0
There is a “ 5 or 4 or 3 or 2 or 1 or 0” on the Left side of LCD.
* Be “0” – throttle & pedal assist NOT work.
* Be “1” – throttle works (If install pedal assist, pedal about 3 circels,then can drive motor to work)
* Be “2” – throttle works (If install pedal assist, pedal about 2.5 circels,then can drive motor to work)
* Be “3” – throttle works (If install pedal assist, pedal about 2 circels,then can drive motor to work)
* Be “4” – throttle works (If install pedal assist, pedal about 1.5 circels,then can drive motor to work)
* Be “5” – throttle works (If install pedal assist, pedal about 1 circels,then can drive motor to work)

If NOT install that pedal assist, ONLY use throttle to drive electric bike motor. But Should be 1 or 2 or 3 or 4 or 5.(Be 0,turn off throttle)

Disconnect throttle plug..

Always press “down”, if motor works with walk speed.. everything is good that means replace a throttle can solve it.

I tried find a mistake, and I have suspicious on bad magnet inside a throttle, hall sensor is fine, I had him out and he worked good, but if I put him back to throttle, so his behavior is unpredictable.

I think that cable and hall sensor is ok, but last thing is magnet, maybe he lost magnetic..

bike conversion kit torque performance in speed

Posted by on December 28, 2021 Comments Off on bike conversion kit torque performance in speed

A major scientific and technological achievements of my 18 years I found the bike conversion kit torque performance in speed and excellent performance is due to change by the coil – in order to prove the authenticity of my first published the theory – by reversing the DC coil motors, commutation is by phase AC motor. By changing the coil to the premise of achieving the rotating magnetic field in the rotating among each of the stator magnetic pole corresponding to the current conductor always flow in one direction. Can achieve zero speed to rated speed constant torque swing speed, and there is no torque ripple, inverter can be completely eliminated, the chopper will swing popular governor world. Installed on the synchronous motor synchronous brushless DC motor commutator can not be called, is distorting the facts and the scientific community, because it is the by-phase commutation – is the AC motor, it can never find the DC motor torque performance and speed performance .

Rotating magnetic field DC motor, asynchronous motor with a rotating armature of durability and torque performance,sensorless brushless hub motor in speed performance, the performance of the perfect electric bicycle conversion kit, speed DC transformer power does not produce harmonic pollution, Speed ​​costs are very low. It can be raw materials for manufacturing into a more limited market value of commodities, will become the next golden goose, the whole industry will lead to a motor revolution. Engaged in electrical research staff to look at my town scientific and technological achievements, we know that all this is true. Is good to explore the talents of entrepreneurs to create a powerful opportunity.

accelerator problem error code: 01

Posted by on December 28, 2021 Comments Off on accelerator problem error code: 01

I have electric bike assistance that I myself mount, the hub motor wheel has a power of 1000 W and a lithium battery of 13 Ah.For almost 7 months that I use everything was going great and for a moment..I have a default code 01 that appears … and it feels like a strong push in power and a total stop with this error code 01, but it happens very occasionally, we will say that its the 3rd third time already.Looking at the leaflet this code indicates accelerator fault.I reconnected the various connections.Cs pedal sensor, hall, engine power, display etc everything seems normal. Anyone can help me solve this problem, thank you in advance Learn more at..

01_error abnormal Adjustment of speed signal
01_error phase lack of motor
03_error abnormal Hall signal of motor
04_error abnormal torque sensor signal
06_error the motor or controller fault