i just got a new EAI cog and im trying to install it on my hubs, it starts off fine then it basicky sticks when i try and thread it on by hand. how smooth is it suppose to go on the hub? i removed teh cog, all the threads look fine and not x-threaded. What do i do? should i use the chain wip to tighten it on?

what hub? its not italian thread or something is it?

Pry bars.

The more the better.

its a bontrager race x lite wheel set. the dura ace lock ring screws on fine. first time screwing a fixed cog on it, has a freewheel on the other side.

Make sure you lube the threads of the hub first, if it still shows resistence DO NOT FORCE IT!

What kind of hub is it?

Make sure your cog thread match the hub threads...

this is what Bontrager says their hubs are:
ISOTrack cogs are threaded 1.375" x 24 tpi, Just like a bottom bracket. ISOTrack lockrings are threaded 1.29" x 24 tpi LH, a left handed thread.Freewheel threading is the same as the ISO track cog just without thelockring portion.


so it should go on smooth, since EAI is standard.