Bobbb, I nominate you for "troll of the year" award. In 9 months, you've managed to post about 15 times about a 5 minute repair! In 1/10 of the time you've wasted posting your prattle here, you could've:

1: bought a new set of chainrings
2: bought a new cassete
3: bought a new chain, and
4: installed them

Freeing up time for you to waste on more worthwhile pursuits, like trainspotting, Morris dancing, or attending Star Trek conferences. Instead, you waste time and bandwidth, proving to all here that you are mechanically incompetent, write poorly, and have problems with prioritizing. You talk, but you don't listen. In the end, if a truck backs up and runs over your bike, it will be doing both yourself and all of us a big favor.

And this isn't the only thread he's started on a simple, easy to understand topic with his endlessly repeating the same lack of comprehension of the answers he's given. What I don't understand is why the rest of the forum members keep feeding this absurdity. For that matter, why am I still following this one?

(sticks fingers in ears, and closes eyes)

Nyah,nyah,nyah........I can't HEAR you............

Oh, sweet bejeezus-this guy can sure bury a simple little problem into tons and tons of extraneous minutiae! Wow, if there was EVER a poster or a thread that deserves a simple "tl;dr", it's this one! Holy Toledo!!!!!!

Thwack!

That's me slapping myself in the forehead.

@#$%^&* I saw a thread, clicked on the "unread posts" button and somehow didn't notice it was Bobbb.

I KNOW better than to wade into these things.

But, Alex, I do think you should be careful what you suggest. I'm sure that in a few months there are going to be Morris Dancers afflicted with endless questions about equipment problems like bells slipping down to ankles and sticks cracking and such.

So, might as well revive this one.

My Trek 7100 commuter has been giving me some annoyance lately with chain skip. 4.5 miles each way weekdays, plus some errands and weekend riding, so call it 60 miles/week on average.

New Weinmann freehub rear wheel, including SunRace 7sp cassette in late June or early July. New chain in early September, and all new cables around the same time. Seems to be skipping on cogs 2, 3 and 4 regardless of which chainring, only within the last couple of weeks. It's not consistent, either; one climb it will skip every 2-3 pedal revolutions, and another similar climb five minutes later it may not skip at all. One day it will skip ridiculously often, and the next day only once or twice in two miles of climbing.

Is it possible the chain is already shot? (It is a Bell from Wally World, since the last one developed a very tight link about a half mile uphill from WM. Unfortunately, that's the only place I can get supplies during the week, and the new "bike shop" in town hasn't been reliable on their claimed Saturday hours. Will likely order a few next time I decide to replace it.) Anything else I should check since the only parts of the drivetrain that aren't under 6mo/1500mi old are the chainrings and the derailleurs themselves?

Good move. It's not as though there are many other threads which already addressed your questions thoroughly and clearly (without four pages of trolling). I'm sure you'll get many useful answers soon.

Oh, for the love of god, WHY did you reopen THIS thread????