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Retrogrump finally upgrading(5 posts)

Retrogrump finally upgradingSteve Daggett
Jun 26, 2001 3:12 PM
I have decided to upgrade my Tommaso SLX to Ergo-10 shifting from downtube Chorus Synchro II. I know about spreading the rear triangle for the new hubs, and of course I'll need the shifters, front and rear derailleurs, and chain. Will I have to change out the large chainring? (I have Superbe Pro cranks and large chainring, and a new TA small chainring.) Will I also have to change my old Cinelli bars for the a double channel bar?

I know that in the long run this is probably not fiscally responsible (I should just get a new bike!) but this seems to be the only way to go at the time. I am getting tired having to sit down to shift on hills.

Thanks
Other upgrades neededCima Coppi
Jun 26, 2001 3:19 PM
You will need to replace the crank set altogether (BB too). The ultra-narrow chain will not be able to shift onto the lower chainring of your Suntour cranks because the spacing between the chainrings is too wide.

As far as the bars, you can use your existing bars, but the extra bulge under the tape may be uncomfortable. Try it first, then if you don't like it, you can replace the bars later.

Good luck!! The Tommaso is a great bike, and Ergo 10 will complement it well.
best to get new crank & BBC-40
Jun 26, 2001 3:28 PM
Although you may get by using the old cranks, campy narrowed the spacing between the chainrings by machining the mounting surface of the big ring, to bring it closer to the little ring.

I would get a Chorus or Record crank & bottom bracket to insure proper shifting. The Daytona crank is an odd-ball, that uses a cheap BB, with a 111mm spindle. It's not interchangeable with chorus & record, which use a 102mm spindle length.

Check out txcyclesport.com for low groupo prices. With the extra discount on the entire group, it may be little more than the price of (fewer) individual parts. Texas Cyclesport also offers an additional discount on groups with a wheelset. Overseas sources like sdeals.com and totalcycling.com may be a little cheaper.
double groove bars not needed....C-40
Jun 26, 2001 3:32 PM
I never use the groove along the back of the bars with campy ergo. Campy ergo levers have the option of routing both cables along the front of the bar. I find this routing to be more comfortable, particularly if thin foam rubber is placed along the shift cable, in the area where it will contact the palm.
Thanks everyone (nm)SteveDaggett
Jun 26, 2001 4:30 PM