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Ergo 10-spd conversion - DOH!
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GYXU > Cycling > Ergo 10-spd conversion - DOH! 12 March 2005 18:18:13

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Ergo 10-spd conversion - DOH!

Richard 5 March 2005 16:07:07
 Greetings. I have two pair of 9-spd Ergo levers - 1999 Athena and 1998
Chorus (which look like the current design, not the first generation
Ergo's).

I'd picked up a 10-speed index disk for half price some time ago. Once
I'd acquired the Chorus shifters, used, I decided to rebuild them (new
g-springs and carrier) and convert them to 10-spd. I ordered the finger
lever ratchet along with the springs...

I couldn't get the index disk to fit. It seems the keyhole into which
the bushing must fit was much smaller than the key on the bushing. I
looked at the parts diagrams for the 1998 Chorus and the 1999 Athena.
The bushing had the same part number. (Note - no problem with fitting
the finger ratchet on the bushing, which was unfortunate. I had to pull
the finger lever assembly back out again to put the 9-spd back on.)

SO, is the bushing the same part number but a different shape after a
certain date? Is the "convertablility" by changing out just those 2
ratchets on 2000 or newer levers? Finally, if I bought a "new" bushing
(for my next re-build), would I then have sufficient parts to complete
the conversion?
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Qui Si Parla Campagnolo 5 March 2005 18:10:10 permanent link ]
 richard wrote:> Greetings. I have two pair of 9-spd Ergo levers - 1999 Athena and 1998 > Chorus (which look like the current design, not the first generation > Ergo's).>
I'd picked up a 10-speed index disk for half price some time ago. Once > I'd acquired the Chorus shifters, used, I decided to rebuild them (new > g-springs and carrier) and convert them to 10-spd. I ordered the finger > lever ratchet along with the springs...>
I couldn't get the index disk to fit. It seems the keyhole into which > the bushing must fit was much smaller than the key on the bushing. I > looked at the parts diagrams for the 1998 Chorus and the 1999 Athena. > The bushing had the same part number. (Note - no problem with fitting > the finger ratchet on the bushing, which was unfortunate. I had to pull > the finger lever assembly back out again to put the 9-spd back on.)>
SO, is the bushing the same part number but a different shape after a > certain date? Is the "convertablility" by changing out just those 2 > ratchets on 2000 or newer levers? Finally, if I bought a "new" bushing > (for my next re-build), would I then have sufficient parts to complete > the conversion?

1998 is a unique year for ERGO 9s in that the next year they converted
the innards slightly for ERGO brain. So you discovered that 19908 levers
cannot be converted to 10s. 1999 andf later has the same innards,
specifically the thru bolt, to allow conversion to 10s.
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GYXU > Cycling > Ergo 10-spd conversion - DOH! 12 March 2005 18:18:13

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