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Old 05-07-05, 03:52 AM   #1
bigchris603
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8 spd to 9 spd new der.

I just read in the raod bike forum that you do not need a new deraller if converting from 8 speed to 9 speed.how true is this?
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Old 05-07-05, 06:27 AM   #2
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Originally Posted by bigchris603
I just read in the raod bike forum that you do not need a new deraller if converting from 8 speed to 9 speed.how true is this?
That's true. But let's also asssume you are talking shimano and the 8 speed RD is not Dura Ace.And also that the 8 speed unit is not wore out or sloppy.

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Old 05-07-05, 07:53 AM   #3
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Originally Posted by bigchris603
I just read in the raod bike forum that you do not need a new deraller if converting from 8 speed to 9 speed.how true is this?
Think about it a little. The rear derailleur guides the chain from the middle so it doesn't care.

The front derailleur guides the chain from the sides. 9-speed front derailleurs are a tiny bit narrower than 8-speed. I'm told the difference isn't a problem for double chainring conversions but I've found it necessary to use a 9-speed front derailleur when converting a triple.
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Old 05-07-05, 04:25 PM   #4
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I just read in the raod bike forum that you do not need a new deraller if converting from 8 speed to 9 speed.how true is this?
You thought I was lying to to Bryan?
Can I use my old rear mech with 9-speed?
Give me a break.
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Old 05-07-05, 04:37 PM   #5
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You thought I was lying to to Bryan?
Can I use my old rear mech with 9-speed?
Give me a break.
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Old 05-07-05, 08:40 PM   #6
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no, i was just trying to get info from more than one source. my thought was that a 9 speed chain may not run thru the pullys properly, being that it is a hair smaller.

I did not mean to offend anybody just wanted a second opinion.
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Old 05-07-05, 11:15 PM   #7
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no, i was just trying to get info from more than one source. my thought was that a 9 speed chain may not run thru the pullys properly, being that it is a hair smaller.
Take a good look at your pulleys.
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