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Can you guys help me out with a general bike question? I just bought a used road bike, making my transition from casual biking to something a little more athletic, and beyond the average wear and tear on the drive train and cassette, whenever im going down hill, my pedals will just sort of spin no matter how fast I pedal or what gear i'm in, and I wont gain any speed or physically move the wheels, they just sort of free spin with no movement of the tires. Is there a reason for this, and how can I fix it?
