anixi

Greetings all,

I usually hang out in the C&V, but, this is a mech. issue: I have 8 speed Record brifters with a 7 speed Shimano (with spacer) on a Shimano R-500 wheel

Am I done? I'm assuming that this will work fine, no matter what rear derailleur I use.

Please advise.

Thanks!

pdlamb

I regard the ctc page (rearranged, now to be found at <https://beta.ctc.org.uk/cyclists-libr...gears/shimergo>, as the canonical site for Shimergo mix and match. Perhaps you can find some combination there that will work for you.

bobotech

Good link.

Much info to be consumed when going to a mix and match system. Campy brifters pull different amounts of cable per shift compared to Shimano so you can't just throw it together and hope that it will work flawlessly.

I think that even the rear derailleurs have different shift ratios from company to company so you can't just stick any ole rear derailler in there and call it good.

anixi

I've studied the ctc page carefully. I don't think that it matters what rear derailleur is used as long as it's a 20th century Campagnolo. Is that what you understand?

anixi

e.g. would this rear der. do?

Mouse here to zoom in

bobotech

I think you are correct but what I understand from reading is that you can't use say a Campy brifter with a Shimano derailleur and expect it to work since the cable pulls are different and the derailleurs expect different cable pulls.

thirdgenbird

you cant use any RD. you need an "early" indexed campagnolo RD. these will be ones made for 8spd and early 9spd. they can be identified by having a traditional b-screw. the pictured RD looks to be a later RD with a b-screw on the cage. can you provide a pictured of the other side?

anixi

Nope, don't have a pic of the other side. I sure hope this one works, just bought it off ebay!

thirdgenbird

if it is a late RD (almost sure it is) it will be close but not as good as the proper early campagnolo RD.

Kimmo 

You may be able to use a ShiftMate to make it all sweet. Check out their combos.

anixi

I've actually checked out shiftmate, mate. It's used to convert from v-brake to canti. I couldn't see any alternative conversion chart that applied to my situation. If anyone can find a shiftmate conversion chart for shimergo, let me know. Thanks in advance!!!

anixi

Would this one work? It does have the tension adjust at the mounting point, but, I'm unsure if this racing t is old enough:




And what about this Veloce long cage? It also has the tension adj. at the mtg. pt. :

anixi

And here's another racing triple, with the same tension adj. location:


[TABLE="class: gs-borderTop2"]
[TR]
[TD]
[/TD]
[/TR]
[/TABLE]

thirdgenbird

those are perfect for what you are trying to do. with one of those the shifting will be perfect. campagnolo 8spd and shimano 7spd have the same cog spacing.

Kimmo 

Those Campy derailleurs are some beefy kit, made to last. Good second hand buy.

Andrew R Stewart 

My contribution to this thread is that Shiftmates are for gear shifting adapting and not brake adapting. Travel Agents are for brake systems. Andy.

anixi

Sorry about that! I saw them and thought that they would be perfect for the situation. The issue is now that I don't have a Campy rear der. suitable for use with the shift mate. Since I didn't even have that, I've been working on something that wouldn't need a shift mate at all:
1. 7 speed shimano/sunrace cassette
2. Campy old pull length/20thcentury rear der.
3. Campy 8-speed Record brifters

I'll lose one of the positions on the 8-speed brifter, but, I don't really care that much anymore. I just want the thing to work!

idoru2005

That site is valuable. I am running Campy 10sp Veloce shifters with Shimano 105 mechs. I'm using the "Hubbub Shimano" method of connecting the cable to the rear derailleur. No Shiftmate needed at all. This combo works well. On the other hand, I've had nothing but trouble getting the front shifter to shift the 105 front derailleur smoothly with a triple crank. Its gotten so bad that I've ordered a Campy FD to replace the 105 FD.

anixi

I tried the hubbub method with my existing XTR sgs, long cage RD, it wouldn't work. I suspect that the pull on the shimano is just too little for the hubbub trick to work. Glad it worked for you!

Kimmo 

I haven't tried to fit 8 cogs on a hub at the 7spd/Campy 8spd 5mm spacing, but you might get away with it. I'd just add the 8spd two smallest cogs (replacing the smallest 7spd cog) and use the smaller gap to the little cog (which should work fine cause of the derailleur's limit screw), if it'll fit on a 8/9/10spd cassette body...

anixi

Well, Kimmo! Aren't you a bright young man! I will certainly try that trick, which will give me 8 instead of 7. Why can't I think of brilliant things like that?

Kimmo 

Perhaps you forgot to consider the difference between a 7 and 8/9/10 cassette body?

Or maybe I'm just a frikken genius

...Mind you, I've had a couple of Shimergos running 7/8, and it never occurred to me before now...

Other people's problems are easy to solve.

anixi

I'll just stick with "bright young man" for now. BTW, I just found a 13t to fit between the end 12t and the next one up 14t. Hopefully it'll work well.

anixi

The blasted thing didn't work: the limit screws couldn't restrict me to 7 speeds
The range is too wide and I couldn't use it. I'm trying to return at the moment. It didn't have the tension screw at the mounting point anyway. The pull seemed to be nearly right, but, a little off, just as you predicted. I did purchase this one, but, it's in Europe, will not be here until the 12th of never...



I think this one will work fine. It has the limit screw in the right place, it's apparently the old pull length edition of 9 speed Veloce, and it's long cage, for the triple crank. This is getting a little frustrating!

anixi

The seller wouldn't allow a return. His ad:
https://www.ebay.com/itm/360458894563...84.m1497.l2649

I wouldn't trust this person. He's not abiding by the agreement in his description. He backed out on a technicality, since the part was not used.

Don't buy from him. He will use whatever he can to screw you out of a return. Too late to give bad feedback, but, I can warn others of his business practices. I will start another thread on this unscrupulous seller.

NOTE: the seller agreed to accept the return at a reduced rate. It's just that his return agreement was a little lacking in details. I've resolved the issue. Don't avoid this seller, he will work with you