Tag Archives: hub-motors

question about 4 x 26 inch single shaft hub motors

Q: Could you please assist in my build?
I am planning on a 4 wheel off road (wheelchair/bike?) machine for disabled users. I am thinking 4 x 1750-2000 watt 26 inch single shaft hub motor in wide beach/snow/mud wheels.Have to be water resistant hub motors. Can all 4 hub motors be controlled by one throttle control? Speed 50km/hr?
Do you supply batteries? Range 50km?+
Can hub motors also run in reverse for parking etc? Can you email me some information on the kit including battery solution please?
Any pictures would be fantastic. And cost of kit too please.
4 x 52v 30 Ah batteries. Speed set at 50 km/hr All 4 hub motors controlled by one controller?
So will I need to purchase all 4 controllers? As I will only need 1? Or will I need to install all 4 controllers?
Can you tell me if I need 4 x controllers or just 1 to run 4 motors?
With the double drive option what battery is best? 2 x 52 Volt battery?  Can you send link please?

A: We can make.
Use one throttle,one LCD, one brake lever..  to drive 4 x 2000w hub motors in wide beach wheels & 4 controllers together.
Also, can make max 50kmh
Also, we have batteries. But recommend 4 sets of batteries.
Also, comes with a switch to control forwards and reverse.
The price is closed to below two Items.
If you make 4 sets.

We will make wire connecting for 4 sets. Just plug each connectors, then can use one throttle to drive 4 x controller and 4 x motors.

https://www.leafbike.com/products/single-side-shaft-hub-motor/26-inch-48v-52v-2000w-beach-snow-fat-tire-single-side-shaft-motor-kit-1527.html 
https://www.leafbike.com/products/lithium-battery/52v-20ah-30ah-lithium-battery-1224.html 

About shipping cost, click “United Kingdom” ,choose your country. Will get the total price.
If 4 sets,you can choose 2 sets ” Double dive”.

Double drive also can work forwards and reverse.

If order 4 x Left drive(or right drive) or order 2 x double drive.  We should make wire connecting for 4 x motors & controller.
They are the same. Difference is that double drive is cheaper. 

Newest leaf hub motor

BRAND NEWEST LEAF BIKE Version Black Lightning Brushless, Gearless hub motor !
New ULTRA powerful and efficient Gearless motor custom made with higher grade laminations, wider magnet stack, high speed NSK bearings, Honey well hall sensors, more copper fill, and all out higher performance. We went through all the stops to make this motor the absolute best hub motor on the market.

This bike motor has the more acceleration at low end, better mid range, and more top end. These hub motors can handle up to 50A loads at 48V, and can take higher voltage with the right controller. This motor will go nearly 80 MPH on 72V!
Also offer this wheel professionally laced into our double wall aluminum rims with 12g spokes. Message us for details. 14″, 16″, 18″, 20″, 24″, 26″, 700c and 28″ sizes are available.

Detail:
Size: 14″, 16″, 18″, 20″, 24″, 26″, 700c and 28″ hub motor wheel
Rim: 14″, 16″, 18″, 20″, 24″, 26″, 700c and 28″ double wall alloy
Spoke: 12 gauge × 36 pcs
Motor Type: brushless gearless dc motor with hall sensor
Voltage: 48V
Power: 1000W
Efficiency: 90.5%
Max speed: 731RPM
Mechanical brake: Disk or V
Cable location: shaft end , right
Cable length:100cm(front) — 150cm(rear)
Install: spacing of 100mm front — 135mm rear fork
Noise: < 60 db Surface: Black painted Net weight: 6.5Kg / 14.4 lbs Compare below performance data.You will find leaf newest motor saving 10% of electricity, improve the efficiency of 8% With The Newest Materials Steel Rotor. How to count speed as RPM? For example: 20 inch hub motor,max speed:731RPM * ONE cycle= 3.14 × 20inch × 2.54( 1 inch = 2.54 cm) = 159.5cm ÷ 100 = 1.6 m( 100 cm=1 m ) * 1.6 m × 730RPM = 1168 m ( ONE minute ) * 1168 × 60 = 70080 m =70 km ( 1000m = 70 km) * 70 ÷ 1.667 = 42 mph

Strange noise from hub motor

Q: The hub motor makes a noise once every turn and it gets stuck (or at least much more friction) at the same angle. It feels like it could be some magnetic effect but more likely it´s some mechanical contact that´s disturbing the rotation.

A: The noise comes from some metal impurity on the magnet.

Solve: Disconnect hub and remove it

Other answer 1.
Take rotor out of the magnet hub isn’t easy.Be careful your hands.Need two guys to do this.One guy press the hub,the other draws the rotor.

Other answer 2.
No other way to solve it,except disconnect hub motor.
Do it as the instruction.Be careful.

Other answer 3.
Magnet is easy to magnetize metal matter.Assembly hub motors should have a clean work environment.

Other answer 4.
There is no any room between rotor and magnet.See picture.Metal scrap may be inside the winding.Test motor before shipment,I think can’t find this problem.But after long distance to ship,it will be magnetized by magnet.

Other answer 5.
Small problem,it’s easy to repair.I disconnected two hub motors,one is old motor,the other is new one,and exchanged the rotor to different hub.That changed motor’s performance. Interesting job.I think you will like to repair it.

How to disconnect hub motor?
Disconnect it as below: