Mounting the ONwheel Kit
Please note that the video does not yet include the latest ONwheel improvements.
Easy to assemble
The ONwheel is particularly easy to mount on a bike. Depending on the design of the bicycle, the time required for this takes on average 20 minutes.
Not sure if the ONwheel Kit can be attached onto your bike? Our FAQ will give you some answers. If, despite the FAQ and assembly instructions, questions remain about attaching the retrofit kit, please send us an inquiry using our contact form. For optimal advice on the subject “does the ONwheel fit my bike” we recommend that you send one or two pictures of the area bottom bracket – rear wheel (necessarily photographed from below) by e-mail to go-e.
Fixing mounting plate: Cross tube (variant b)
For bicycles without a stand plate, but with a cross tube behind the bottom bracket (see picture), you will need additional mounting materials for assembly. These are included in the optional mounting kit, which is part of the scope of delivery, provided that mounting on the cross tube is selected when ordering the ONwheel.
Please note: The free space between the bottom bracket and the cross tube must be at least 25 mm. If there are cables in the area: 25 mm up to the point where the cable can no longer be pushed away.
In the area between the cross tube and bottom bracket, there should be no overhanging holders (e.g. for floor pulls) to ensure that there is enough free space for the carrier plate.
Perhaps, the derailleur for the circuit must be slightly offset during assembly.
In most countries the pedelec regulation applies. It stipulates that electric assistance is only permitted as long as the cyclist himself is pedalling. To measure this, the Pedal-Assist-Sensor (PAS) is required. This sensor receives via the magnetic disc (or magnetic ring), supplied with the bike, information whether the pedals are moving.
The PAS sensor itself is usually simply glued onto the bottom bracket and fixed with a cable tie if necessary.
This is the simplest PAS-Sensor mounting method: It is only possible if there is enough space on the left pedal side (not chainring side). At least 5 mm room is required between bottom bracket and crank arm. The magnetic disc can then be easily attached to the pedal axle.
On bicycles with a higher price range, the distance between the bottom bracket and the pedal crank is often too small. In this case a magnetic ring can be attached to the chainring side (right wheel side). This is included in the scope of delivery if the appropriate mounting method is selected when purchasing the ONwheel.
On wheels with a three-bladed derailleur, the magnetic ring can be usually fitted to the smallest chainring. This type of installation is guaranteed for 64-BCD* and 74-BCD* chainrings. Other chainrings may require the attachment of individual magnets (included in the set for right mounting) on the chainring.
*Standard indicates the bolt circle of the sprocket bolt connection.
On bikes with chainguards, the chain guard brackets are often in the way. Please contact our support with the corresponding pictures to make sure that the mounting is possible.
With chain cases, PAS mounting is not possible on the right side. If mounting on the left pedal side is also not possible, the PAS sensor probably cannot be mounted.
Speed Sensor installation
The Speed Sensor measures the speed at the rear wheel. This enables the ONwheel to determine whether the wheel has reached its minimum speed of 6 km/h and has not exceeded the maximum speed (standard 25 km/h).
The speed sensor (encoder) is simply glued onto the rear wheel brace and secured with two cable ties. Screw the magnet to a spoke. It is important that the magnet passes the sensor in the outer third when turning the rear wheel (not in the middle). If the distance between the magnet and the sensor is too far, a second magnet (additional magnet) can be applied. Alternatively, the magnet can be attached to a spoke that rotates closer to the sensor.
Attaching the battery
The battery is delivered in its holder, which can be attached to the screw holes for the water bottle holder of the bike. The contacts between battery and battery holder close automatically when the battery is inserted.
If there are no suitable threads for a water bottle holder on the bicycle frame, we offer an adapter in our online shop (if available).
Please note: The battery only fits on the down tube of a ladies bike in a few cases. To check this, you can download a template for cutting out here. If the battery does not fit the down tube, you have to mount it on the top tube of the frame.
Note: The cable length for down tube mounting is 30 cm, which is usually sufficient for all bikes. For top tube installation we offer a cable length of 60 cm.
Fastening the Power Buttons
The Power Buttons can be used to select the power levels 1-4, providing more electrical support in each stage. The control unit is easy to attach onto the handlebars, as the diameter of the mounting bracket complies with the standard for bicycle grips.
The cable length for the Power Buttons is 1,100 mm, which is usually sufficient for bicycles. If you are unsure whether this is long enough for your bike to reach the handlebars from the bottom bracket, simply check with a tape measure. Add a few centimetres so that the handlebars can still be turned sufficiently.