Loud freehub for a road bike?

Yeah that’s great advice about the adaptor, thanks!

I heard hope has a nice sound, but that’s mtb only right?

I ride an old cannondale through amsterdam for fun, sometimes it’s really busy and a freewheel could be less obnoxious than shouting and safer than a bell because you can keep hands at the controls,… Plus I’m due a new rear wheel. Indicating to training buds that I’m sitting up and freewheeling when behind them is a bonus lol