David Balkin knows bikes. He has sold them, studied them, but mostly he has ridden them – for decades – and for thousands of miles. The “Great Balkini” offers his unique Cyclology here for the first time. This series of exclusive articles is designed to make you one with the world’s most perfect machine. It doesn’t pollute. It rarely breaks down. It makes no sound to speak of and asks little in return. Yet it makes you healthy and takes you places, especially to the flat, charming, scenic Seacoast.