Samebike MY-SM26 intermittent throttle

getsimon

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Feb 19, 2023
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Hi everyone.

I have a Samebike MY-SM26 ebike, and I recently had my battery+controller stolen.

The original sm26 (custom-made) controller is currently out of stock, so I purchased this one (please see photo attached):

https://www.aliexpress.com/item/32967236787.html Version: 48V Kit A.

I also purchased this battery: https://www.ebay.co.uk/itm/164793096562.

Upon connecting everything, I’m getting error E10, which means that my S830 LCD display does not properly communicate with the controller. I’m aware of that, and the listing on Aliexpress makes that clear. I have tried using a compatible KT display with its compatible 1to4 Julet cable, and the E10 disappears.

However, all issues outlined below, occur with both setups (original and KT compatible):

PAS works fine, and I can ride the bike with PAS with no issues.

Walk mode also works fine.

Unfortunately, (full) throttle works intermittently. I can (full) throttle the bike for 2-3 secs and then the motor stops. Every time I press the throttle switch (on full), the motor spins for 2-3 secs and then stops.

If I press the throttle switch gently the motor spins with no issues, if I press more to increase the speed, the motor stops. So, I can only throttle the bike on low speed.

I’m really struggling to figure out what is wrong, and what needs to be replaced or fixed.

Any help would be greatly appreciated.

Some characteristics of the equipment can be found below

Thank you.

ORIGINAL SM26 CONTROLLER (stolen):

MY-SM26

Controller name: DC brushless controller

Controller model: 36/48V 350W six-tube controller

Controller code: AA005DHL (FSX)

Size: (mm) length*width*height 340*65*20

Net weight: (KG) about 0.4

Rated voltage (V): 48

Undervoltage value (V): 40±1

Maximum current (A): 12±1

Rated working current (A): 6

Waterproof rating: IP54

ORIGINAL MY-SM26 MOTOR (installed on ebike)

Motor Name: Permanent Magnet DC Brushless Hub Motor

Motor model: 26 inch magnesium alloy 10 knife motor

Weight (KG): 3.8

Rated voltage: DC48V

Rated power: 350W

Maximum power: 560W

No-load current: ≤1A

No-load speed: 260±10 r/min

Maximum current: 12.5A

Efficiency: >80%

Maximum torque: (N.M) >30

Waterproof rating: IP54


CURRENT EBAY BATTERY

Peak discharge current: 30A

Continuous discharge current : 20A

Peak power output: about 1500W

Continuous power output: about 1000W

Voltage: 48v

Capacity: 13Ah

Product name: 48V 13AH Hailong battery
 
Links to eBay may include affiliate code. If you click on an eBay link and make a purchase, this forum may earn a small commission.
Your description of your throttle sounds a bit unusual, throttles are cheap, yours may not be compatible with your new controller.
 
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