Remove saddle, clean rails, refit. Do the same wit the seatpost. Buy new bike. Job done.
Seriously, does the noise happen when you stand up? If you're sure it's the cranks. undo and refit with smear of grease to contacting parts.
@hippy started
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Remove saddle, clean rails, refit.
Do the same wit the seatpost.
Buy new bike.
Job done.
Seriously, does the noise happen when you stand up? If you're sure it's the cranks. undo and refit with smear of grease to contacting parts.