If your hub seems to not have the full ratio range or not reach its top speed, see below what you can do.

Problem

Upon inspection, you detect one of the following:

• The hub does not reach the full or correct gearing (ratio range):
  • Urban - 256%
  • City - 310%
  • Trekking - 380%
  • Heavy Duty - 380%
  • Extreme - 380%
  • Utility - 400%
• Top speed doesn’t seem to be reachable at a reasonable cadence.
• The manual hub interface may be incorrectly installed, hence not allowing the full range.

Solution

You will need to perform different checks depending on the transmission system you have:

Enviolo Automatic

1. Update the Enviolo Automatic to latest firmware;
   • Detailed instructions
2. Calibrate using the Enviolo Automatic;
   • Detailed instructions
3. On City and Trekking hubs, ensure the spline nut is well-tightened;
   • Detailed instructions
4. On speed pedelecs, make sure the correct primary ratio is selected.

Manual

1. Reset to full overdrive using the MHI;
   • Detailed instructions
2. Ensure the cable slack is correct;
   • Detailed instructions
3. Ensure the cable length is correct;
   • Detailed instructions with the cable-cutting tool
   • Detailed instructions without the cable-cutting tool
4. On City and Trekking hubs, ensure the spline nut is well-tightened;
   • Detailed instructions
5. On speed pedelecs, make sure the correct primary ratio is selected.

The ratio range should now be restored.