Big vs Small Chainring - Same Power (ERG Mode Gearing)

Training
2

Yes, gearing in ERG matters and affects the feel.

Higher gearing = Higher Flywheel Inertia
That generally means “easier” and the flywheel works to keep the drivetrain movement easier.

This is covered in several threads. Usually you want to consider applying the gearing in a way to mimic your event needs.

The rule of thumb is to try to match the flywheel inertia to the majority of your events.

  • Flat and Fast Road Riding = Use Higher Gearing and Faster Flywheel Speed

  • Hilly and Off-Road Riding = Use Lower Gearing and Slower Flywheel Speed

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