Originally Posted by
JohnDThompson
Single freewheels for road type and flip/flop hubs are limited to 15T or larger to provide room for the ratchet mechanism.
Single freewheels with 14T or fewer only mount on specific BMX-type hubs.
Thank you. I read piper's question and was wondering what that 14 tooth FW was. A wild rarity like the 41 tooth Campy chainring (yes I know they exist; I even know someone with two but I have never actually seen one) or the 11 tooth track cog? And the question in my mind; how did they get the bearings and ratchet in there. 14 tooth cogs aren't much larger than standard FW or FG hub threads.
So now I know. BMX hubs use smaller diameter threading. Good to know. I'll probably never use one, but who knows? I've done stranger things. (Are they 120 mm dropout spacing?)
Ben