I rode down to the Bike Peddler on the Bontrager, with the stuck-cog ENO Eccentric hub in my handlebar pack. Truth to tell, I chose the Bontrager because I bought it from NorCal Bikesports back when it was called “Dave’s,” and I thought I might have a better chance with my weird request if they recognized a bike they’d sold. Ten years ago half the employees at both shops had owned one of these closeout Privateers.
When it was my turn at the repair counter, I produced the hub, with the cog and lockring still attached, and said, “What I have is in the nature of a challenge. Is it possible to remove this cog? And… how much would it cost?”
The mechanics laughed, and said, “you’re supposed to remove this before you cut out the spokes!” I told them I bought it, and they said, “I hope you didn’t pay too much.” I said, “It depends on how this goes.”
It went well. Two guys, four tools and a vice. As one of the attending mechanics said, “It’s easy if you have the right tools.” He looked at the setup in the vice, “Or in this case, the wrong tools, used appropriately.”
The hub goes in the vice, the pin spanner* fits into two spoke-holes, and is held in place with vice-grips or locking pliers, so it can’t jump off the hub. Chainwhip goes on the cog, with a cheater bar for more leverage. The pin tool also has a cheater bar. Two strong men lean into it, and the cog spins off.
The mechanic picks up the cog and wipes down the threads, “Who wants to call it? $10?” Well worth it. Ten minutes, and 100 years of experience, vs two hours and something broken, if I’d done it myself.
*The pin spanner! This is the key element I didn’t see anyone online recommend. A cog-removing pin-spanner with several pins and a self-gripping feature would be a dynamite tool… Problem Solvers?