Shimergo experience

GordonB

Retro Guru
Since I built my fluted tubing Olmo using primarily a Shimano 105 groupset with dt shifters I've been vaguely dissatisfied that I didn't use Campag as the marque deserved. However, the decision was a compromise as I like indexed shifting but Campag never made a good indexed dt system. Unfortunately, Campag did a jump from dt shifters to 8 speed Ergos without developing Ergos suitable for a 126mm oln cassette system. Ok, I could get the rear forks cold set but the frame is too rare to risk that, so I've been looking for a lateral solution.

Someone here suggested that I try to mate a 7 speed Shimano cassette with a set of 8 speed Ergos as they both utilise a 5mm sprocket spacing. Hmmmmm.......that has possibilities, so I managed to get a NOS set of 8 speed Veloce Ergos and this morning I took the old 105 brake levers off to substitute the shiny new system. I then found that the Veloce front mech I had in my parts bin is the wrong clamp size and the Mirage rear mech I had lying around has a very sticky action. Oh b****r, what now. In frustration I just connected the cables up to the 105 front and rear, simply to tidy it up with the full intention of putting the bike back in the shed until I can get a good pair of mechs.

HOWEVER, I thought I'd make sure the Ergos actually did go click when they were supposed to as they've been in the box for 20 years or so. Well slap me with a kipper and call me Simon if they didn't just go clickety click at the right moments AND actually indexed perfectly!

I'd expected the Campag levers and mechs to work with a Shimano 7 speed cassette, but all the information I have found states that you can't use a S7 rear mech with C8 levers as the pull ratios are different. Just to make sure, I've taken the bike out for a 10 mile ride and it shifts as slick as any of my other machines.

Now it's not staying that way, I want a proper Campag setup, but this has possibilities for anyone who wants to try a mix and match.

I've got a lovely pair of wheels with Campag Record hubs and Wolber Profil 18 rims in the shed and they will take a Shimano spaced 7 speed screw on block. All I need now is a pair of good 8 speed Campag mechs, anyone got anything that would do the job? Veloce would be nice!

Gordon
 
I have a pre-2K Chorus 9-speed mech which will work fine with 8-speed, if that's any use to you?
 
dbmtb":3o32z3qj said:
I have a pre-2K Chorus 9-speed mech which will work fine with 8-speed, if that's any use to you?

Could be! Could you send a pic and let me know how much?

Cheers
Gordon
 
Very interesting, I too have a Shimano 7sp set up and wouldn't mind trying this.

Should it just index perfectly 'straight out of the box' so to speak?

What I don't understand is how the cassette pitch can be the same (5.00mm) and yet C8 and S7 shifters have different cable pull, is this something to do with the rear mech?
 
You are exactly right. The mech moves a little less per mm of cable with a Campag setup.

You can often get these forbidden combinations to work with clean cables and Shimano mechs - to correct it exactly use the Hubbub modification on the Shimano cable clamp.
 
Ive used campag 8 ergos with a shimano mech and six speed shimano block/cassette and that did work faultlessly over a number of years.
 
Going back that far, most stuff moved 5mm. Shimano 8 speed went 4.8. it all moves the same in practice.
Can't help on a mech but I happily use old Campag with 8 speed shifters. IE mid 70s Record. Looks nicer than later stuff.
If you are running a freewheel you could go 8 speed anyway.They are 5mm. if you can find one. i have 2 running, one at 126 mm and 1 at 130. The later was created to fit a frame that had been stretch to 130 and it was easier to rebuild the hub than jump on the frame. 8 speed will go 126mm witha strong wheel.
 
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