Sometimes things just go wrong with bikes. It is a mechanical device with moving parts after all so maintenance is needed regularly and in this video clip series some of the most common failings of mountain bikes is addressed. This includes the chain, the shifter and the derailleur. All of these things and more are addressed by, Mickey Denoncourt, our expert who has been working on bikes for years. Here he will walk you step by step through each adjustment and repair so you aren't just a rider, you're a mechanic too!