Bike shifts into spokes or won't shift to lowest gear

Symptoms

• Chain makes noise trying to shift past the largest cog into the spokes
• Shifting stops one or two gears short of the easiest gear
• Grinding sound when shifting to the lowest gear
• Problem appeared after a derailleur adjustment or cable change

Likely causes

• CommonLow limit screw set too far outThis screw is meant to stop the derailleur from moving the chain past the largest cog into the spokes.
• CommonLow limit screw set too far inThe opposite issue prevents the chain from reaching the largest, easiest gear at all.
• PossibleCable tension too high or too lowBeyond the limit screws, overall cable tension affects exactly which gear the derailleur lands in for each shift.

What to do

1. Locate the two small limit screws on the rear derailleur, usually marked H (high, smallest cog) and L (low, largest cog).
2. If the chain is trying to shift into the spokes, turn the L screw clockwise in small increments (typically a quarter turn at a time) and test shifting after each adjustment.
3. If the chain won't reach the largest, easiest gear, turn the L screw counterclockwise slightly and retest.
4. Once the low limit is set so the derailleur just reaches the largest cog without going further, check the high limit (H screw) the same way at the smallest cog.
5. Adjust cable tension with the barrel adjuster if shifts between gears feel hesitant or delayed, separate from the limit screws.
6. Test shift through the entire range multiple times to confirm smooth, accurate operation.
7. If limit screw adjustment doesn't fully resolve it, a bent derailleur hanger may be affecting alignment and a bike shop can check this.

Tools and parts

• Small screwdriver

When to call a pro

A bike shop can fine-tune limit screws and cable tension together for precise shifting across the full gear range.

Safety