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Folding Bikes Discuss the unique features and issues of folding bikes. Also a great place to learn what folding bike will work best for your needs.

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Old 02-10-11, 09:48 PM   #1
highroller
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Upgrade Dahon 7 speed to 9 speed?

I just got a new wheelset and am considering upgrading my Dahon Eco to a 9 speed rather than fit my 7 speed cassette. Besides a cassette and shifters what else do I need to get?
The Eco has a Tourney rear derailleur, would I need to change it?
Does the chain need to be changed to a thinner 9 speed one?
Do I need to change the crank/chainwheel?

thanks
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Old 02-11-11, 01:25 AM   #2
jur
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What wheelset? This could be important in determining if a 9sp would even fit.

To convert from 7sp to 9sp, you would need

* Different hub (7sp freehubs are no good for 8/9sp cassettes)
* 9sp chain (10sp also works well)
* 9sp shifter

The derailer will work. The Tourney is rock bottom entry-level, so getting a few levels higher will be well worth it. (If you were in Australia, I have a spare Alivio.)
Cranks and chainwheel will be fine.
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