PITA commute home last night!

Rear tire was low... pumped it up before leaving the station. Then a hundred yards later my cog popped off my three speed hub (doh!). Had to take the wheel off to get it back on. A mile or two later, my tire was flat (yes, flat; not just low). I pumped up and rode away but didn't get far. Tube was not holding air at all now. Went for the tool kit... and no tool kit. wtf! I guess I moved it to another bike and not having had any maintenance issues on this bike since December, I forgot all about it. I had to call my wife to come pick me up, which was a first in fifteen years of bike commuting.

When I got to fixing the flat, I found the cause was right at the edge of a patch I'd done in December, so I'd call it a failed patch... but it took a good long time for the patch to fail.

I also found a broken spoke, which I fixed.

And this morning, the cog popped off the driver again. That's really not supposed to happen, and it's surprising that it's happening now, after I've had this hub in use for several years. I removed a spacer so the circlip fits the driver better, so now the cog is a little loose on the driver, but the circlip is seated where it's supposed to be.