Originally Posted by
Small cog
I was wondering what has been people's experience with SA hub dynamos, I have always avoided them thinking the moment you stop the light goes from very dim to out and want something better, I now have a modern Son hub on a newer bike and with a modern headlight it works well, has anyone upgraded an old light or found a vintage style new one which works well with the SA hub?
Modern LED headlights designed for dynamos have the "standlight" feature, keeping the light on (at a reduced intensity) after the power source cuts out. It's a function of the light, not the dynamo.
Old Sturmey Archer dynohubs are rated at lower power output than modern hubs, but it may be enough, depending on various things.