Ever heard that an old elephant dies when it’s last set of teeth get worn down and it just can’t chew no more? Well, my trusty old track bike wheel is kind of like the geriatric elephant. The cog had been just chomping away at the chain, mile after mile, day after day, for a very long time and all 19 of its teeth got worn down. By the time I thought to replace it, the cog had so lost its appetite for chain that I couldn’t get the chainwhip to grab on enough to take it off the hub.
And they just don’t make dentures for a track cog.
i bet i can get that cog off of there.