I thought I'd be really clever and get a spare wheel for use on the trainer. A "trainer wheel," as it were. Now I've got one for inside and one for outside, and don't have to worry about wearing out an expensive tire. Since today looked like the first day of winter, I figured I'd actually put the trainer wheel on the bike and do a stint on the trainer.
But it clicks. Sounds terrible.
I've got a 7-cog freehub cassette on my "normal, outdoor" wheel (hope I'm getting the terminology right as per Sheldon Brown's website), and a 7-cog threaded cassette on my trainer wheel. Are the cogs exactly the same? According to the guys at my LBS, whom I don't completely trust*, the cogs are all the same save for the biggest one, but no biggie, I'd hardly use that one on the trainer anyway.
Could this be a problem with the chain?
*A couple of weeks ago I went in to get a cheap extra wheel for the trainer. Cheap, cheap, cheap, I said. So I walked out of the shop with a $100 wheel all set up, tried it on my road bike, and found it was too wide. I'd have to loosen the brake cable every time I wanted to use it. Should I have realized it was too wide at the shop? Well, I'm still a novice. They should have mentioned something about that, I think. So I brought it back in, expressed my complaint, and they fixed it by getting a thinner rim off the rack and switching the spokes off the first wheel onto that rim. They said they'd give me a deal on the labor. It cost me another $100. This is now a $200 wheel for my trainer in which every component is low end. Is this reasonable? It kinda bugs me. In the past year I've taken my two bikes there a total of about seven times, and every single time that I've rode out of there there was a problem within 10 minutes necessitating an immediate return. I'm frustrated, but they're the only game in town. It's not a big town, either. How do I voice my frustration without coming off like a complete a-s-s-h-o-l-e?