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Campagnolo Racing T crankset compatibility question

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Campagnolo Racing T crankset compatibility question

Old 12-28-18, 02:02 AM
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Campagnolo Racing T crankset compatibility question

My bike is currently setup with a Chorus 8 speed group set. 52/42 Crank, Chorus front derailleur, 14-28 Miche cassette, Chorus 8 speed rear derailleur, 8 speed Chorus Ergo levers. I just recently came across a Racing T 52/42/30 Crank and I was wondering what changes I would have to make to use that crank with my setup. I have a extra 115.5 Bottom Bracket that I bought my mistake when doing this build originally which I believe will work fine with the triple. My main question is whether or not the front derailleur has enough range to shift the triple crank or if I will need to get a triple front derailleur, and more importantly will my Chorus rear derailleur work? Any help would be greatly appreciated!
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Old 12-28-18, 02:30 AM
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You need both a new front and rear derailleur. The rear short cage rear will not have enough chain wrap capacity for the triple. The front shifting will be awful without a derailleur designed to handle a triple.

Do not buy a recent generation Campy rear derailleur and expect it to work with your shifters. In 2001, Campy changed the actuation ratio on their rear derailleurs from 1.43 to 1.50; you need one of their long-cage indexing derailleurs made from 1992 to 2000. 8 or early 9 speed units. And a 8 or 9 speed generation triple front derailleur.

Don't sweat it; at any one time there are a dozens of each for sale on EBay.

Finally, whatever you do, don't let anyone, particularly a shop, try to convince you that you need to 'upgrade' to a new system, either due to the unavailability of parts (false), or to achieve better shifting performance. I've been running Campagnolo Ergopower since Day 1, and your 8-speed Chorus shifters can achieve (if properly set up) shifting performance as good as any Campagnolo system made to date. And better than any Shimano derailleur-based system. I've tried them all.

By 1994, Campagnolo had totally got their act together. I have a Record Titanium setup from that era that shifts as quickly, accurately, and reliability as any system I've ever used. Well, except perhaps for 8-speed Alfine.

Last edited by Dave Mayer; 12-28-18 at 02:33 AM.
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Old 12-28-18, 08:23 AM
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I agree you will need a new triple compatible front derailleur. However, you current rear derailleur will work if you are careful to avoid the smallest one or two cogs when in the granny chainring as that will cause the chain to go slack. It usually isn't a serious problem but should be avoided.
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Old 12-28-18, 10:16 AM
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I disagree about the front derailleur. I use a Campy Racing T on a few bikes, along with a Nuovo Record front derailleur. It shifts fine. I have tried triple-specific derailleurs but dislike them, and always put the NR back on. I currently have NR fronts on most of my bikes, both double and triple cranks (including many with Spécialités TA cyclotouriste cranks, plus a Modern Sugino triple.)

I can’t explain why my experience is so much more positive than others report, but like I said the front derailleur poses no issues for me.
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Old 12-28-18, 10:18 AM
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Originally Posted by Dave Mayer View Post
You need both a new front and rear derailleur. The rear short cage rear will not have enough chain wrap capacity for the triple. The front shifting will be awful without a derailleur designed to handle a triple.

Do not buy a recent generation Campy rear derailleur and expect it to work with your shifters. In 2001, Campy changed the actuation ratio on their rear derailleurs from 1.43 to 1.50; you need one of their long-cage indexing derailleurs made from 1992 to 2000. 8 or early 9 speed units. And a 8 or 9 speed generation triple front derailleur.

Don't sweat it; at any one time there are a dozens of each for sale on EBay.

Finally, whatever you do, don't let anyone, particularly a shop, try to convince you that you need to 'upgrade' to a new system, either due to the unavailability of parts (false), or to achieve better shifting performance. I've been running Campagnolo Ergopower since Day 1, and your 8-speed Chorus shifters can achieve (if properly set up) shifting performance as good as any Campagnolo system made to date. And better than any Shimano derailleur-based system. I've tried them all.

By 1994, Campagnolo had totally got their act together. I have a Record Titanium setup from that era that shifts as quickly, accurately, and reliability as any system I've ever used. Well, except perhaps for 8-speed Alfine.
Thanks, this is what I kind of figured... And no worries about a shop selling me anything, this is my third all Campy bike ( + 1973 Paramount Nuovo Record, 2014 LeMond Washoe 11spd Chorus)... I know what I like and that is Ergo, my knees just don't like 52/42 as much anymore.
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Old 12-28-18, 05:13 PM
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I have 3 of those cranksets 115 BB is for oversize seat tube frames 111 is for 1.125" seat tube frames

You might just Rally alter the old <C> NR , with a long wrap up cage , that Soma/Merry sales has on offer ..

I have a original Rally and a Triomphe on my C&V road bike, with Campag's old bar end shifters ..

Bought new , then I got old so we're both C&V ...







Last edited by fietsbob; 12-28-18 at 05:18 PM.
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Old 12-29-18, 12:03 PM
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To be clear: if you are running Ergopower shifters (indexed brifters), then you need a rear Campagnolo derailleur that matches. As I indicated earlier, you specifically want a long-cage Campagnolo derailleur from the years 1992-2000.

Ancient pre-indexing derailleurs such as Nuovo Record, Triomphe, Rally etc are in no way compatible with your shifters. I have a 20-pound bin of these derailleurs, including several iterations of the long-cage Rally. However, they are useless for indexed systems.
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Old 12-29-18, 03:16 PM
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OP may be into indexing , I'm Not.. ( my indexed shifters are for IGH, a Sram 9 and a SA 3...)

he said there was an older bike , that was pre indexing.. Suppose its not getting the triple..
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Old 12-29-18, 07:06 PM
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Only aspect that I'll add is to test fit the new crank on the old BB before pulling that BB. At worst you'll find that you do need a different axle length. At best you might find it's a good length (although I doubt this). Or you might get a better idea which new axle length works best.

I have test fitted a new crank (triple in place of double) many times and will partially remove the RH side to artificially "lengthen" the axle. When the crank has about the right clearance I measure the gap between the shell face and the RH cup's flange then do the math. Andy
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Old 12-29-18, 08:30 PM
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[QUOTE=Andrew R Stewart;20723678]\

....I have test fitted a new crank (triple in place of double) many times and will partially remove the RH side to artificially "lengthen" the axle. When the crank has about the right clearance I measure the gap between the shell face and the RH cup's flange then do the math. Andy[/QU

Great tip!

regards, Brian
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Old 12-30-18, 11:28 AM
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One thing I found.. in those, in that era, the right crank arms were designed to use the same BB ,

so double lays on one chain line, the triple a bit different for the centering the middle chainring ...


Sub Record line..





...
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Old 01-01-19, 01:16 AM
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Originally Posted by fietsbob View Post
I have 3 of those cranksets 115 BB is for oversize seat tube frames 111 is for 1.125" seat tube frames

You might just Rally alter the old <C> NR , with a long wrap up cage , that Soma/Merry sales has on offer ..

I have a original Rally and a Triomphe on my C&V road bike, with Campag's old bar end shifters ..

Bought new , then I got old so we're both C&V ...






I will try the 115 and the see if it is close enough, but I can always get a 111 relatively cheap. From what I have researched it looks like my Chorus Ergos and 8 - Speed Miche Cassette should work just fine with the, typically, 9-Speed Racing T front and rear derailleur so that is one less thing to buy. I have a an old 10-Speed Chorus Crank (missing the hidden bolt) that has a 39 inner ring that I think I will replace the 42 in the triple with giving me 52/39/30, which will be great.

As for the old NR on my Paramount, the bike originally had a Soma long cage conversion when I bought it and the grub screw on that RD broke (not sure if it had anything to do with the conversion kit or just age) so it was replaced with a standard NR and a 14-24 freewheel. This winter I found a beautiful 1st Gen Rally (with the reinforced neck) that I am going to pair with a NOS Suntour Perfect 14-34 that I have had sitting around. With that combo I think I will get some more usable gear inches. Picture of the Rally submitted for your approval. : )
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Old 01-01-19, 09:59 AM
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OK, bought one new in 1975... same one.. .... Its on my RB1.. You used a DSLR?
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Old 01-01-19, 10:16 AM
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No iPhone.
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