Joined: Jan 2009
Posts: 44,222
Likes: 6,480
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
Drag will increase when you turn on the light, but not much, and you won't feel it in your legs. For that reason, I leave my lights on day and night. I have two of those hubs. I don't feel anything while on the bike until I hit about 20 mph. Then it vibrates through the handlebar.