Originally Posted by
cormacf
Thank you!
One more even noobier question--are cog sizes standard, or should I have my LBS check out the hubs (Phil Wood track hubs of some vintage) to see what will fit? I need to put a 15t on the back (it currently has an 18t/16t combo), since Cat5/4s all run 48/15 on my track.
In my experience threaded cogs are all interchangeable. However I've found lock rings use at least two different threads.
My recommendation is to use a small amount of grease on your cogs and lock rings threads.