Joined: Jan 2009
Posts: 44,138
Likes: 6,363
From: New York, NY, and High Falls, NY, USA
Bikes: 1962 Rudge Sports, 1971 Raleigh Super Course, 1971 Raleigh Pro Track, 1974 Raleigh International, 1975 Viscount Fixie, 1982 McLean, 1996 Lemond (Ti), 2002 Burley Zydeco tandem
A bottle dynamo doesn't go in a bottle cage. It is so named because it is bottle shaped. Have you seen them in the flesh? They bolt onto the frame or fork on the side. I run them without a special tire. They're not perfect, but they're not bad, either, and you can get the old ones cheap.