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chainring question(7 posts)

chainring questionSanjuro!
Feb 3, 2002 3:18 PM
How frequently should one replace chainrings? The teeth on my rings are looking rather ragged and I'm wondering how frequently (if ever) you guys replace this stuff. I keep the drivetrain clean and prepped with white lightning. I am not heavy (145) and the rings have about 6500 miles on them. I have a full ultegra groupo.

Not to worryKerry Irons
Feb 3, 2002 5:09 PM
It is HIGHLY unlikely that your chain rings are worn out after only 6500 miles. You should compare your rings with new ones, and you will see that the tooth shape has changed little. I have no personal experience with Ultegra wear, but I would think that 25K miles would be reasonable, and perhaps longer with someone as light as you. This of course assumes that you don't let your chains elongate rediculously, which will wear rings faster. Absent shifting problems or severe visual distortion, save your cash.
What am i doing wrong?LC
Feb 4, 2002 10:16 AM
I only get 3,000 miles on 9 speed Ultegra rings, for my hill climbing bike.
Let me get this straight.Kerry Irons
Feb 4, 2002 5:48 PM
You're saying you have to replace your rings every time you replace your chain and cassette cogs? I've not heard of this problem with Ultegra. How do you determine wear and the need for replacement? At the risk of sounding snide, perhaps you need to consider whether you've gone to false economy with your equipment choice - my Campy Record rings have nearly 36K miles on them. The cost of 12 sets of chain rings probably would have justified the better group. I'm not really serious though, because you've got something special going on to wear out rings that fast.
Feb 4, 2002 6:18 PM
It's a question of lubrication. Some people still think that White Lightning qualifies as lube rather than the wax, snake oil and marketing hype that it really is. If you want mechanical stuff to last then you have to use good lubrication. Put it this way you wouldn't run White Lightning (or no oil) in the engine of your car would you? If was good don't you think Detroit would be all over it? So why then your bike? The obsession with keeping everything spotless and clean and skipping regular lubrication leads to early demise of mechanical components. Not cleaning things and allowing grit to get everywhere is also very bad, but most people with nice bikes don't do this. One of the fastest ways to wear out mechanical things is to NOT lubricate them. A steel chain will literally eat up alloy teeth and make them look like a table saw blade in time.

I have thousands and thousands of miles on my Ultegra chain rings and cog sets. I frequently clean and lube the drive train and replace the chain when it's done after something like 3,000 to 4,000 miles. Nothing special, just routine preventative maintenance.
What am i doing wrong?LC
Feb 5, 2002 4:28 PM
I think you may have something there about the white lightning, I think that much of the wear was done when I was using that stuff. I have switched to oil, which I do every year as soon as it becomes cold and wet. This year I was already planning on sticking to oil year round. I took a look at the rings of my riding buddy's rain bike and his are worse than mine in even fewer miles. Only thing is he only uses oil, although I don't think he lubes his chain very often. We usually ride these long steep 15 to 18% grade hills at max effort to see who gets to the top first. On the flats we usually spin at high rpm to try to recover for the next hill. Is the hard effort on the hills causing excessive wear or the spinning
re: chainring questionJimP
Feb 4, 2002 7:11 AM
I recently replaced a set of DA rings that had over 10k miles on them. The tooth profile was still good but the sides of the teeth had worn away enough so the ends of the teeth were sharp like knives.