This bicycle is perhaps 25 years old, I have stored it in my attic. My wife and I recently got in down from the attic for an upcoming visit by our granddaughter. The problem is that the rear wheel does not turn when the pedal turns. The chain is on the spokes of the rear hub and the chain turns when you 'push' the pedal but the rear wheel does not turn. Can anyone tell me what the problem is?
Thanks so much,