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Help with gearing for Ventoux

curiumcurium Posts: 815
edited July 2012 in Tour & expedition

I have previously ridden Ventoux on my bike (see my post from a few years ago here) but had a 11-32 cassette at the time.

As I commute in London which has few hills I have been using a 12-23 this year and was planning to leave it on my bike for the Ventoux trip. My chainring has 50/39/30.

On my previous climb of Ventoux I mainly used the 39-28

Can anyone work out if I have anything comparable on my current bike? How would a 30-23 compare?
I don't want to have to change the sprocket in case it requires a longer chain but realistically I may have to.

I'm off to France a week on Monday so have time to order a chain & sprocket if need be.



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