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TVT 92 with Croce d'Aune

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TVT 92 with Croce d'Aune

Old 09-04-14, 07:23 AM
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TVT 92 with Croce d'Aune

This is the model of bike Greg Lemon rode in 1989 & 1990 (his paint job was not nearly as appealing).

Oh how I don't want to flip this! First time ever with Delta brakes for me on the morning post-cleanup ride.

Lightweight, not too flexy, components are a dream.

Enjoy.










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Old 09-04-14, 07:25 AM
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Old 09-04-14, 08:59 AM
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Very nice! Someone even upgrader the RD to C-Record.
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Old 09-04-14, 09:18 AM
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Beautiful bike!

I picked up at Guerciotti on C-List a couple weeks ago that had a mix of Shimano and Campy, the crank being Croce d'Aune. It's pretty banged up and the 7mm crank bolts are also boogered up. I've since learned that using regular crank bolts would lead to acquiring a reverse-thread extractor.

Ugh... I think it may be a candidate for a sanding/polishing exercise, to be hung on the wall.
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Old 09-04-14, 09:52 AM
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Simply stunning.

Love those Deltas? How do you adjust them? What pads?
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Old 09-04-14, 10:33 AM
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DOn't flip it! She's a beaut.
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Old 09-04-14, 01:32 PM
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I didn't have to adjust them - I just cleaned off the dust and grime, added bar tape, air and oil, and went for a spin. The Swiss take care of their stuff.
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Old 09-04-14, 02:09 PM
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Eventually you will need to adjust the cable anchor on the Delta brakes....... so you might start looking for that not-so-common 3.5mm allen wrench....
Noticed the C-record RD too, the Croce d' Une RD has a very prominent rod/bellcrank sort of arrangement right under the RD arms....

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Old 09-04-14, 02:22 PM
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Originally Posted by Chombi
Noticed the C-record RD too, the Croce d' Une RD has a very prominent rod/bellcrank sort of arrangement right under the RD arms....
I love the look of the Croce d'Aune RD. Don't know if that rod did anything for performance though.
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Old 09-04-14, 05:00 PM
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Originally Posted by Kactus
I love the look of the Croce d'Aune RD. Don't know if that rod did anything for performance though.
Don't know how the rod thing works too, but I think it makes the CdA RD look much more interesting than the C Record RD. JMO.
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Old 09-04-14, 05:07 PM
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probably hard to see, but the butt end of CdA RD.
Not sure what will show when reduced to 100K.

If you expand the pic you can see the little rod. Not sure its contribution.

Here's the front view.
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Old 09-04-14, 08:44 PM
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Campy's rear derailers from this era were for the most part insane patent-dodging inventions in my view, which makes it a potentially-rewarding challenge getting one of these drivetrains working to a high standard for one's particular usage.

C-Record was old-school "conventional", which is not the worst thing you could say about a rear derailer, with extra points for getting one to index acceptably (modern, narrower chain really helps, especially when a freewheel without the proprietary spacing is used).

Croce de Aune used a sort of reverse-acting, cable-operated B-tension self-adjuster to maintain chain gap, at the expense of wild changes in chain tension, which somewhat limits gearing range. Insanity at it's pinnacle!

Chorus was much like Croce and Athena (in between), but used conventional calipers and the adjustable-slant A-B rear derailer, which indexed with it's own particular levers and choice of A or B indexing rings.

Athena used a partially slanted, offset parallelogram that hinted toward modernity, but concealed its B-tension "gear chip" in the top knuckle, requiring derailer removal to make adjustments!
These things work pretty well though, even while indexed (the Athena shifter/derailer was duplicated in the lowest-cost Xenon gruppo of the day). Gearing is still somewhat limited by the fixed B-pivot feature of all of this era's Campag rear derailers.

I recently got my Xenon gruppo working slick even with a Sunrace 13-25t freewheel (using a 9-speed chain), making this gruppo a lot better than I think most of us will remember, and a pretty good deal in spite of the plastic trim covers and brake levers.

I wonder what kind of drugs those guys were on. Well, it was the '80's, so....

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Old 09-05-14, 06:48 AM
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Originally Posted by Wildwood
Simply stunning.

Love those Deltas? How do you adjust them? What pads?
You remove the cover plate and the wheel and adjust them between the scissor arms. In the center you can see the allen bolt cable anchor inside the 'nut'



Originally Posted by dddd
Campy's rear derailers from this era were for the most part insane patent-dodging inventions in my view, which makes it a potentially-rewarding challenge getting one of these drivetrains working to a high standard for one's particular usage.


Chorus was much like Croce and Athena (in between), but used conventional calipers and the adjustable-slant A-B rear derailer, which indexed with it's own particular levers and choice of A or B indexing rings.
Actually if you understand the Chorus RD it was pretty innovative with the twist or adjustable parallelogram. The A setting while still an old school regular or straight parallelogram worked as well as another CampI RD. The B setting to be used for a wider ratio FW turned it into a slat parallelogram and it was shift, even with the proper synchro insert much better than other CampI synchro setups. I wish I had understood this better back then myself.

IMHO Chorus Monoplaner brakes were anything but conventional.






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Last edited by Bianchigirll; 09-05-14 at 06:52 AM.
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