This guide explains how to assemble legacy hub interfaces on a rear wheel, and then how to assemble the rear wheel onto the bike frame.

Compatibility

This guide is compatible with legacy enviolo Automatic and Automatic+, and NuVinci Harmony and Harmony H|Sync hub interfaces.

Video instructions

Hub interface

Rear wheel

Spline nut options

The legacy enviolo Automatic or Harmony only has a 44 Teeth spline nut option (it’s different from the AUTOMATiQ, which supports 40T and 44T). Only 44T hubs are compatible with Automatic or Harmony:

• City, Trekking (and legacy enviolo CO, SP, CA, and NuVinci N360, N380, N380SE hubs)

You can find the identification of the hub interface variant at the bottom of the hub interface on the serial # sticker.

Step-by-Step instructions

1 - Assemble the hub interface

Before you start

Ensure you have the correct hub Interface for your enviolo or NuVinci hub. Legacy Automatic or Harmony hub interfaces are only compatible with hubs with 44 Teeth splines. Make sure you have the right hub, otherwise forcing entry might damage the spline nut.

Tools

• Scratch pen or marker
• Torque wrench with 17mm socket

Assembly instructions

1. Use the uninstalled hub interface to determine the desired orientation.
   • Orientation should be forward, parallel to the chainstay with the Automatic main connector facing forward.
2. Move the Automatic hub interface along the dropout to ensure clearance at different axle positions.
3. Use a scratch pen or marker to mark the hub interface in the middle of the dropout.
4. Remove the anti-shift retainer, if installed.
5. Suspend the Automatic hub interface over the right-hand axle and align the axle flats with the marked position.
   • A no-turn washer can be installed over the Automatic hub interface to align the assembly angle.
6. When the assembly angle is aligned seat the Automatic hub interface fully onto the axle.
7. Thread the right-hand nut, serrations facing outward, onto the axle.
   • Tighten it to 8-10 Nm.

2 - Assemble the rear wheel

Exercise caution when assembling

Improper installation may result in damage to the dropout and the hub. Over-tightening may damage parts. Under-tightening can result in the axle sliding in the dropouts.

Tools

• 15mm wrench

Assembly instructions

1. Place the rear wheel into the rear frame.

2. Orient the chain around the hub interface and onto the sprocket.

3. Rotate the hub interface until the cable connector aligns with the chainstay.

   • Make sure your chain or belt is correctly set on the front chainring so you can set the proper tension.

4. Once you properly set the tension, tighten both acorn nuts with a 15mm wrench to 30-40Nm.

5. Finally, assemble the power cable carefully by inserting it into the hub interface.

Proceed to the next guide

If you successfully follow the steps above, then the wheel is on the bicycle with an Automatic or Harmony hub interface.

Proceed to configure the hub interface using the desktop software: How to configure the Automatic or Harmony with the Desktop Software