Originally Posted by riverdrifter

I'm not sure I'm using the correct terminology here, but I'm just wondering why some rear hubs are loud and others are quiet?

Five bikes in my family currently and they all have varying noise levels.

My Jamis road bike has a Formula hub with SRAM 12-26 8-speed cassette. It is completely silent, pedaling and coasting.

My vintage Raleigh with Shimano 3 speed is loud while coasting. So is my wife's Raleigh Alysa hybrid, it has a Sunrace 7 speed cassette.

My son has a full chromoly Framed single speed BMX that is extremely loud when coasting.

My my daughter has a GT mtb that has a Sunrace 8 speed cassette, and it's the second quietest of the bunch. Still much louder than my Jamis though.

Just one one of the many random thoughts I have when we are all riding together.

Thanks!