O Captain! My Captain!

With apologies to Walt Whitman but you'll understand why that title came into my head in a moment.

I knew little about bikes except that they have a seat, handlebars, pedals, brakes and gears. I knew even less about tandems and I confess that the new terminology made both Mike and I giggle - the rider at the front of the bike is called the 'Captain' and the rider on the back is called the 'Stoker'. I had visions of shovelling coal into the furnace of a steam train!