Domino Premium throttle twist grip with full handle

Original article from Domino (Italy) – made for motorcycles, but can also be used with the e-bike – for that real bike feeling. For the handle to work with the e-bike system, it must be correctly connected to the system. We will show you how this works.

• Cable without plug and approx. 100 cm long
• Microswitch max 2A/24V
• Handlebar Tightening torque 1.5 to 1.7 Nm

This throttle works with a linear potentiometer (IP67). In addition, a microswitch is installed which activates the brake cut-off and/or regenerative feedback when the throttle grip is released. A second handle for the other side is included.

Blue: 5V
White: GND
Black: Sensor (potentiometer)

Green for brake cut-off/current interruption – can be ignored. If used, one of them must be connected to 5V.

1) Connection to Bafang BBS01/02/HD or CYC motors (with BAC controller):

-> Wiring:

Between Bafang RED and Domino BLUE a 470 Ohm resistor must be installed – otherwise you will get error 04 with very little handle actuation. It is also recommended to use a 100 Ohm resistor between the BLUE/BLACK and RED/BLUE wires. This causes the throttle grip to react earlier. If you do not want this, you can simply omit the 2nd resistor. The two green wires can be ignored.

-> These values should be set in the THROTTLE tab on the Bafang BBS controller:

• Throttle Mode: Speed
• Start Voltage: 15 (=1.5V)
• End voltage: 45 (=4.5V)

If “Throttle Mode” is set to CURRENT, the throttle grip reacts like a switch – on or off. However, the engine turns slightly faster than when SPEED mode is used. With the SPEED setting, throttle operation can be regulated accordingly using the twist grip.

2) For Adaptto & Domino:

With the Cycle Analyst, the “Fault Volt” must be increased to 4.99V. With some controllers, the 5V signal input is too high, so a 470/560 Ohm resistor should be connected in between. There is a connection to the switch when the throttle is turned – this is interrupted when the throttle is released.

Further information on the Domino throttle grip (specifications) can be found in the download area or in the product images above.