AAAAAAARRRRGGGGHHHH!!!!!

I was so close! All I needed was the cog and spacers, which were on track to arrive today.

I get home, I get out of the car, I run to the porch... YES!!!! THE BOX HAS ARRIVED!!!

Pull the bike out of the shed, pull off the rear tire; line up the cog and slap on the spacers! Oh yeah, Baby! Nothin' left to do now but -

No. Oh, HELL No!

I FORGOT TO GET A LOCKRING!!!!!

So much for tomorrow's shakedown ride. I hope the shop has a lockring lying around.

Dammit.