A couple of Tech Talks ago, we covered super cleaning a double crankset by removing the chainrings. It’s an excellent bike maintenance project because it doesn’t require special tools and it results in a like-new looking crank. It’s also something even beginning mechanics can tackle to hone their basic skills. This week’s topic, do-it-yourself rear derailleur adjustment, is another skill that even newbs can master. And once you’ve got it down, you’ll be able to keep your bikes shifting perfectly, plus fix your riding pals’ machines, too – making you a hero out on the road!