Wednesday, April 5, 2017

DuraAce 9000…is that 9000 miles?

There is definitely some irony to this post! Last month I wrote about how my Cervelo had rolled 20,000 miles. For the record it’s currently at 21,043 miles.


This week the bike developed a noticeable clunk in the bottom bracket/crankset area. So much so that I could feel it through the soles of my shoes. Today I dropped it off at my local Service Course; Wins Wheels and explained the issue. No worries they would check it out and let me know. Not three hours later they called to let me know that the drivetrain was in their words “dead”.

I am a big believer in logging the details and as I use SportTracks to log my mileages on gear I was able to see that it was actually 364 days ago that the Groupset upgrade was made. I also saw that a little over 8800 miles had been accumulated since the upgrade. The last time the bike was in the shop was November for the BB change and since then I have added another 4000+ miles. It’s frightening how quickly things add up when you ride around an 1000 miles a month. It has basically gotten to the point that I am wearing things out!

Anyway, long story short, new chain rings, cassette and chain. This also means new cassettes on two other wheelsets too. Wins is great in that they have no compunction if you want to source the parts yourself. Unfortunately with the Mulholland Challenge this weekend and a busy week at work I have no time so I was more than happy to let them pull the spares off of their shelves.

Two more hours later I was back in the shop picking the bike up and looking at the new shiny bits!


For reference, a chain should last about 2000 miles, Cassettes and Chaining rings should last about twice that. Of course, that depends a lot on how and where you ride and how much you look after you kit. If you abuse it and live someplace where there is a winter and all the fun weather that goes with that it could be much shorter! Either way it is significantly less than 9000 miles!

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