Drag from hub dynamos

[Pete]

Do modern hub dynamos impart any significant drag?

Pete

 

[flecc]

I can only speak of Shimano's current ones which have undetectable drag when not lighting and scarcely any with lights on. I doubt if many riders, if any, can detect it even then while riding.
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[Pete]

Thank you. I only have experience of one, many years ago, in the 1950s, and seemed to remember you knew you had one, maybe memory deceives me!