Velognome 

So here's the issue. Built up a '81 Raleigh Comp with 700c wheels and Campagnolo GS brakes with Dia Comp shoes. The reach was almost there, and somehow I got them adjusted and it worked. Wore out several sets of tires and this week the brake pads and tires got changed together. Same tire Pascela Panarer 32's , they fit like before....it's close but they fit, and as you can see, the shoe is about 1.5mm above the rim surface. It was close in the original build too but this time the pad rubs the tire on the right side as it makes contact with the rim. I need a fix!

https://farm6.staticflickr.com/5504/9...02010fdb_n.jpg

Trim the top edge of the pads?

File the slot in the caliper to get the 1.5mm

Replacing the calipers is not an option nor 27" rims

Any suggestions?

fender1

Judicious filing of the caliper arm and call it done.

droy45

Isn't that frame for 27in wheels and not the 700c. I believe the 27in are slightly larger in diameter and the calipers would be perfect. Just sayin' not sure.

due ruote 

+1

Velognome 

Filing, that's what I suspected, thanks for the confirmation.

pastorbobnlnh 

Keep looking for Cinderella? A drop bolt.

rhm

A wedge shaped spacer on the shoe and a corresponding washer on the nut will angle the whole thing down a little. Or just file it.

rootboy 

Are those short reach GS brakes? Kind of look it.

Velognome 

PB, Drop bolt = too much drop. RHM, Thought of changing the pitch of the pad but then I'd have to grind the face of the pad to mate with the rim surface so then I thought why bother, cut to the chase and just cut the pad back a bit and then.....we'll it's a beautiful circle of logic and reason but in the end I did neither. So I posted my mini dilemma here last night to see if I was on the right track......should have just filed the caliper and been done with it I suppose.

Velognome 

Yes, for this application, I'd say they are short reach...actually too short of a reach

3alarmer 

...turn it into a fixie.

Velognome 

But it already is ..... I like to run brakes, and this one is intended for rides with hills so front and rear brakes are very much appreciated particularly since I'm getting older.

Spent some time working on it this morning. The slots are not symmetrical!! They are they same length but the right side is about .5mm higher if I use the bottom of the caliper arm as a fixed point of reference. Obviously, Campagnolo uses a different point of reference because they could not have made the mistake...right?

M A V

My 1980 Shimano 600 arms hold the pads at different heights too, figured it just a design of the single pivot. After filing the arm I would go with larger washers to get a bit more strength out of the arm.

noglider 

Moving the rear wheel forward or back a bit might help.

You could also file down the top of the dropout slot a bit.

gaucho777 

If you only need a mm or so, you may get there by filing the threads on the brake pad bolts just where they contact the slot in the caliper arms. I've done this successfully where I only needed about 1mm, and preferred filing the replacement brake pad holders (Jagwire X replacement pads, $1 each at LBS) over the brake caliper arms.

Bandera

V_Gnome,

The Comp GS that year came OEM w/ Weinmann "605" sidepulls, a tad longer reach than your Campy set.
Judicious use of a sharp file on the caliper arms and proceed.

-Bandera

Velognome 

Ya, I realized the Weinmann's had the extra drop but I had the set up working fine until the last tire change. The fix is a little of a few recommendations. I took a little off the caliper arms to even things out, I'm going to make a few passes with the file and the Shoe bolt where it passes through the caliper and I'm going to knock the edge off the leading and trailing to edge of the pads....then everything should work perfectly

This is a tight tolerance ride since It's running 700x32's so it's only fitting the brakes are pushed to the edge too.

I'd like to thank everyone for there input!

degan

This man is sure using his noggin.

Velognome 

Kinda feels like I've just tuned into an infomercial

bwilli88 

A Shop teacher* once said "Always file and cut the disposable item first."
Since you noted the arms are uneven, light filing to even them up is good.





















*That was me and I learned from my teacher.

rootboy 

What I don't get is ... that may be the first set of Gran Sport brakes I've seen that has brake shoe holders with wheel guides. Which makes them either: Record, Super record, later Campy model or other brand. If they are either of the first two, I would file the caliper arms before I filed on the brake shoe studs.

degan

Ha, I should change that. It doesn't even apply anymore. The big red letters are staying though.

Velognome 

Calipers are most certainly Campy GS, shoes in the picture are Dia Comps, the guides are separate pieces. Why the guides? Just cuz I want to.

I think they are an early set, block letters CAMPAGNOLO on the left arm, G.S. on the right.

Bikedued

The big red letters are annoying, removing them would really help your status quite a bit.,,,,BD

seedsbelize 

I really miss ilikebikes' sig. He caved to the pressure. Probably lines up the tire label with the valve stem too.