Bafang: installation

With a Bafang drive, the Rohloff E-14 2.0 works in its DS (Direct Shifting) version: shifting is started by the E-14 Trigger on the handlebar, and a DC/DC-DS Converter supplies power and communication from the drive battery — no separate battery needed. This page shows how the system is built and the Bafang-specific fitting steps; the general information is in the linked articles. Fitting the converter means taking the motor out — we suggest leaving it to us: book an appointment.

System overview

Pos.	Part	Art. no.
1	E-14 Trigger	8801-04H
2	E-14 2.0 DC/DC-DS Converter	8802-06
3	E-14 2.0 shift unit	8803-04
4	E-14 connecting cable	8804–8810
5	drive motor	—
6	battery	—
7	the drive’s own cable (the motor wiring harness or Y-cable), which the converter connects to	—

The purple parts belong to the drive system’s maker. The facing T-marks show the plug connections between cables.

• Trigger — two levers: “+” shifts towards gear 14, “−” towards gear 1. Fits 22–22.3 mm handlebars, on the right-hand side only. Connects to the converter with a blue, 4-pin Higo connector.
• DC/DC-DS Converter — the electronic link between the drive system and the E-14: it powers the components and passes on communication. It usually goes in the down tube or seat tube (in the seat tube, mind the seatpost’s adjustment range). On a Bafang drive, it connects to the motor wiring harness or the drive’s Y-cable. Fitting: fitting the DC/DC-DS Converter.
• Shift unit — the electromechanical unit that shifts the SPEEDHUB’s gears. Connects via the connecting cable to the converter with a purple, 6-pin Higo connector.
• Connecting cable — runs between the converter in the middle of the frame and the shift unit at the rear wheel. Choose the length to suit the frame and cable route:

Art. no.	8804	8805	8806	8807	8808	8809	8810
Length	400 mm	500 mm	600 mm	700 mm	800 mm	900 mm	1000 mm

Fitting the Trigger

The Trigger fits only on the right-hand side of the handlebar, between grip and brake lever — not on the left.

1. Unscrew the clamp’s two screws (TX10) and take the clamp off.
2. Place the Trigger between brake lever and grip with its cable pointing towards the middle of the bar. Position it so it does not obstruct the brake lever and you can reach both levers comfortably with thumb and forefinger.
3. Refit the clamp the right way round: wide side forward, in line with the Trigger’s guide. It must slide onto the bar without resistance — do not force it.
4. Gently screw in the front screw until there is no gap, and tighten it to 0.8 Nm; then the rear one, also to 0.8 Nm. The Trigger should now sit firmly.
5. Pull the brake lever and check it touches neither the Trigger nor anything else.
6. Connect the Trigger’s blue, 4-pin plug to the converter’s blue, 4-pin socket.

TX10 only

Use only a Torx® TX10 tool, ideally with a T-handle or screwdriver handle. Similar profiles (Torx PLUS® and the like) or an undersized TX10 ruin the screw head.

Route and fix the cable on the handlebar and frame so it cannot kink, twist or get trapped when steering or using the brake lever. Where it passes through the frame, make sure it cannot chafe. The cable must never hinder steering or any other part on the handlebar.

Do not clean the Trigger with a pressure washer; a soft cloth lightly dampened with water is enough. No cleaning agents, oil or silicone spray.

Cables and connectors

Connection	Connector
Converter – Bafang drive	Higo, blue, 4-pin
Trigger – converter	Higo, blue, 4-pin
Shift unit – converter	Higo, purple, 6-pin

The cables and connectors of the Trigger, converter and shift unit cannot be replaced separately — if damaged, the whole component has to be replaced.

Bafang: battery out first

On a Bafang drive, take the battery out first before separating or connecting any connector. Under power, the components can behave unpredictably and be damaged beyond repair.

• Switch the system off before separating anything. Reconnect a separated connector no sooner than 10 minutes after switching the drive off.
• Fix the shift unit’s connector at the rear wheel securely to the frame, so it cannot get into the spokes or the brake disc.
• Do not use contact spray in the connectors.

For separating and joining the connectors correctly, and handling the cables, see cables and connectors.

Removing and fitting the wheel

1. Switch the Bafang system off and take the battery out.

2. Separate the shift unit’s connector at the rear wheel.

   

3. Remove the wheel together with the shift unit: Removing the rear wheel.

Fitting is the reverse (Fitting the rear wheel): reconnect the connector, put the battery back and switch the system on. More on the E-14 specifics: removing and fitting the wheel with an E-14.

Shift unit and brake disc

Some jobs — changing the brake disc or the shift unit, or relacing the wheel — need the shift unit taken off the SPEEDHUB: removing and fitting the shift unit. For fitting a brake disc with an E-14, see brake disc with an E-14.