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Step 2 - Mount the brake disc and freewheel on the motor wheel

In this step we prepare the motor wheel by mounting the brake disc and the freewheel.

Overview​

┌────────────────────────────────────────────────────┐
│  2.1  Remove axle covers and nuts                  │
│  2.2  Prepare the brake disc side                  │
│  2.3  Mount the brake disc                         │
│  2.4  Mount the freewheel                          │
└────────────────────────────────────────────────────┘

Estimated time: 15 to 20 minutes

Step 2.1 - Remove axle covers and nuts​

The motor wheel comes with protective parts on the axle. These need to be removed temporarily.

On one side, the brake disc side​

  1. Remove the axle cover (plastic cap)
  2. Unscrew the axle nut
  3. Remove the washers - note the order!
Keep the parts in order

Lay the parts out in order on a clean surface. You will put them back later in the same order.

Step 2.2 - Prepare the brake disc side​

Remove the plastic spacer​

  1. Locate the bolts on the brake disc side
  2. Remove the bolts with a hex key
  3. Take off the plastic spacer underneath
Save the parts

The plastic spacer and bolts may be needed later. Set them aside.

Step 2.3 - Mount the brake disc​

Check the rotation direction​

Important - Rotation direction

The brake disc has a marked rotation direction that MUST be followed for proper braking.

How to find the rotation direction:

  1. Look at the brake disc - there is usually an arrow or text that shows the direction
  2. The text "ROTATION ->" or similar shows which way the disc should rotate

Thread the cable through​

Before mounting the brake disc:

  1. Locate the motor cable coming out of the motor hub
  2. Thread the cable through the center hole in the brake disc
  3. Pull through enough cable to reach the controller later

Fasten the brake disc​

Positioning:

  • Lay the motor wheel flat with the brake disc side facing up
  • The brake disc rotation direction should be counterclockwise when you look at the disc from above
  1. Place the brake disc on the motor hub
  2. Insert the brake disc screws that came with it
  3. Tighten in a star pattern for even load distribution:
      ①
    ⑥   ②
    ⑤   ③
      ④
  1. Tightening torque: 6 Nm, use a torque wrench if possible
Even tightening

First tighten all screws lightly, then go around again and tighten them to final torque. This prevents warping.

Step 2.4 - Mount the freewheel​

Turn the wheel over​

  1. Turn the motor wheel over so the drive side, opposite the brake disc, is facing up
  2. Remove the axle cover, nut, and washers on this side as well

Screw on the freewheel​

The freewheel has threads that make it tighten automatically when you pedal.

  1. Identify the threads on the motor hub
  2. Screw on the freewheel clockwise, standard right-hand thread
  3. Tighten it by hand - no more than that
Why only hand-tight?

The chain will automatically tighten the freewheel the first time you pedal. Tightening it too hard now makes it harder to remove later during service.

Checklist​

After this step you should have:

  • Brake disc mounted with the correct rotation direction
  • Brake disc secured with 6 Nm torque
  • Motor cable threaded through the brake disc center
  • Freewheel mounted and hand-tightened

Common problems​

The brake disc does not fit​

  • Check that the plastic spacer was removed
  • Make sure the cable is not in the way under the disc

The freewheel catches​

  • Check that the threads are clean
  • Screw it on straight, cross-threading will damage the threads

Unsure about rotation direction​

  • If there is no marking: mount it so any ventilation slots would scoop air in the direction of travel
  • Contact support if you are unsure

➡️ Next step: Step 3 - Mount the tire and tube