Originally Posted by
CafeVelo
I've got one for my commuter that I never bothered to install. Tons of drag, and weighs more than my crank. Wouldn't dream of installing it on a race bike. For some people though, a front hub that powered a di2 system would be ideal.
Dynamo hubs feel like they make a lot of drag when you feel the axle with your fingers, but in practice, the drag is completely imperceptible.