Originally Posted by
zacster
I took my 3N72 dynamo wheeled bike on an extended 35 mile or so ride today. It was bright sunshine, so I didn't have the light on, but you couldn't feel a thing from the dynamo. My light has a the daylight detection so even if it were on, only the daytime running lights would be on, not the main light.
I do think it's hilarious that people expect drag. Not you personally, just the nay-sayers in general!
It powers a 3W light (max) and even with 50% efficiency ... they'd only feel an 6W drag. When I ride only flat surfaces on my SS bike ... I put out somewhere between 100 and 150W, so I'm going to notice a 3 to 5 W difference.