Joined: Jan 2009
Posts: 44,160
Likes: 6,381
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
Many of us think this ought to be easy, but so far, it's proven to be hard to accomplish. Maybe it will be solved at an acceptable price level. It does seem ideal to be able to run off a dynamo when possible and off a battery when the dynamo isn't putting out current.