If it's fine to ride a cheap dynamo hubs that feel quite draggy when you pick up the wheel and spun it (which come to a complete stop after one rotation), then the drag on that rear hubs is the last thing you'd need to worry about.
@edscoble started
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If it's fine to ride a cheap dynamo hubs that feel quite draggy when you pick up the wheel and spun it (which come to a complete stop after one rotation), then the drag on that rear hubs is the last thing you'd need to worry about.