Well you probably read my post in your Bianchi thread but I'm 3 for 3 success with Syncro 2, although technically one of them is 8 speed Record, so I don't think that is actually Syncro.
'85 Merckx Pro with 6 speed C Record RD
'89 Bianchi Giro with 7 speed Athena RD
'89 Merckx Century with 8 speed Chorus RD
I'm going to start building up a Basso Gap soon and plan to put 7 speed on it.
I would suggest using a modern 8 speed chain - I usually use KMC Z72 or SRAM. If you go 7 speed pick a ramped freewheel like a Dura Ace or Sachs Aris unless you decide to match up like in that link I posted.
Julio's third picture down is what I called the Record. Not sure if they used Syncro terminology for that, but it shifts as nice as any later Ergo stuff. I'm not sure if the second version (wide barrel with knurled know) can be used friction, I haven't seen any way to do that unless you take out the insert.
The mechanism is discussed in the referenced article,at least I think it's that one, I've read so many they sort of blur together. You simply grab the clip/handle on the end of the barrel pull out and turn a quarter turn, you now have friction operation.
One point that I forget but recall now is the mechanism itself of the two generations, II uses the little d spring doo dads that ergos use also. For that reason I think I'm going with II.
I have both early (6-7 spd) and late (8-spd) Syncro 2 shifters.
The difference in barrel diameter is subtle, I just measured. It's 1.8 mm.
Campy never used "Syncro 2" in the Record catalog, they refer to them all as "Syncro". But I have seen a box with "Syncro 2" on it. And in the 1988 Athena catalog they use "Syncro 2" So, as I said earlier Campy were quite confused in their nomenclature.
Both mine, the older and newer use "G" springs.
The text in the 1991 catalog that goes with the Record group picture refers to them as "Syncro" shift levers. For some reason the 1992 &1993 catalog just calls them "shifting levers". I bought mine NIB and the box and instructions just say "Syncro" even though they are clearly 1991.
I have never tried to see if my 1991's will go into friction mode, but the 1993 version is "index only" Perhaps we should be calling these "Syncro 3"
I'm still learning. It seems like there was the original Syncro in 1997 then at least 4 iterations of "Syncro 2"
1. The original Syncro with the little friction lever.
2. Then Syncro 2 1988-1990 had index rings for 6 and 7 speeds and g springs. (I have this one)
3. 1991 introduced 8 speeds and the larger diameter spool and body. (I have this one in use). And presumably this coincided with the redesign of the geometry of the RD. So if you have either a 7 or 8-speed cluster this would be my preferred setup over the earlier generation for the much improved shifting. (I had tried the earlier setup and was never completely happy).
4. 1993 added the cable adjuster and was index only.
So I installed the levers today. Took me at least an hour to get the insert in by hand. I wonder about if the insert and springs are orientated correctly but it does seem it's all relative. As long as the slot in the insert and the other steel bush, I guess, are lined up then the lever is in the correct place.
I do have a question. Keep in mind I don't have a freewheel,nor rear derailleur on. When the lever is all the way up, in the position it would be in to be on the smallest sprocket in the back, it seems there's more lever motion to the first click than the motion it takes to get the rest of the successive clicks. Does this sound normal?
I wouldn't worry about it. If you look at the insert you'll see that the spaces between the notches aren't all quite equal. I've noticed there is always some "wiggle" in the shifter as well, less so once the cable is on and under tension.
A forum community dedicated to Road Bike owners and enthusiasts. Come join the discussion about bike parts, components, deals, performance, modifications, classifieds, troubleshooting, maintenance, and more!