Winter and Stainless Cogs
It's winter, and here in Minnesota that means that we are deep into the season of rust. Unlike other states Minnesota roads get covered in not only gravel but salt during the winter months. Salt leads to rust, and rust leads to problems.
Slight sidetrack, but walk with me. The freaking problem with this state is that even when the weather is super nice out, you can't really enjoy it. Right now outside it's 40 degrees, which is crazy warm for this time of year. It's been raining a little and the snowbanks all look deflated and defeated. Awesome right? Well not exactly, yeah it's warm out now and the snow is melting but tomorrow it'll be back below freezing and what's going to happen to all that melt water that's covering the roads? Ice. It's going to get crazy nasty if we get a cold snap, which is what looks to be going to happen. It's going to turn the city into a total shit sandwich.
Back to cogs: it's winter and in winter I like to run two cog's on my fixed gear setup. An everyday running gear which is 43X17 and a backup 18t cog on the other side in case it gets really hairy.
Two weeks ago I mounted a cog that I had sitting around the workshop for this purpose.
It now looks like this:
This is a brand new cog that has never seen a chain and after only two weeks it looks like this due to the salt. The stainless lockring below it however is clean as a whistle except for the rust that has dropped onto it from the cog above. No rust, no fuss, winter can suck it. Of course I forgot to take a picture of my stainless 17t cog that is actually being utilized on the other side of the hub to illustrate the point I'm getting at, but I'm sure you get the idea and will forgive my unpreparedness.
If you live in a place where you have winter, the extra money for a stainless cog means that your cog will still look new come spring.