Bicycle shifting and drivetrain repair.
Diagnosis and adjustment for skipping gears, dropped chains, drivetrain noise and worn components.
Good shifting depends on more than one adjustment.
A bicycle that will not shift correctly may have cable friction, a bent hanger, drivetrain wear, incompatible parts or a setup problem. Repeatedly turning the barrel adjuster cannot correct every cause.
Drivetrain services available
- Front and rear derailleur adjustment
- Derailleur-hanger alignment
- Shift-cable and housing replacement
- Chain wear measurement and replacement
- Cassette, freewheel and chainring replacement
- Crankset and bottom-bracket service
- Electronic shifting setup and adjustment
- Drivetrain cleaning and noise diagnosis
A repair plan based on wear
Chains, cassettes and chainrings wear together. John measures and inspects the system, explains which components can remain in service and provides an estimate when replacement is needed.
Customer-provided drivetrain components can usually be installed when they are compatible and appropriate for the bicycle. John will confirm fit before installation.
Drivetrain repair near Augusta
Drivetrain service is available to road, mountain, gravel, hybrid and e-bike riders from Augusta, Manchester, Hallowell, Gardiner, Chelsea and neighboring towns. See the local service area.
Can a bent derailleur hanger be adjusted?
Often, depending on its material and condition. It is inspected before alignment or replacement is recommended.
Do you work on electronic shifting?
Yes, electronic-shifting setup and normal drivetrain diagnosis are available.