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Road Cycling “It is by riding a bicycle that you learn the contours of a country best, since you have to sweat up the hills and coast down them. Thus you remember them as they actually are, while in a motor car only a high hill impresses you, and you have no such accurate remembrance of country you have driven through as you gain by riding a bicycle.” -- Ernest Hemingway

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Old 03-31-14, 11:56 AM   #1
Nachoman
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new campy record brake has limited clearance


My friend just replaced his five year old campy record rear brake with new record. Now every leaf, patch of dirt and grain of sand gets caught between his tyre and brake. Check out the very limited clearance he now has. FYI, this is a conti GP 4000 25c tyre, so maybe that is contributing to the problem, but it’s the same tyre he was riding, prior to the switch, without issue. I told him to consider buying an older version of record to solve this problem. What do you think?
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Old 03-31-14, 12:02 PM   #2
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Maybe you could provide a less clear photo?

Is it the exact same wheel also? Doesn't that also make a difference in tire size once mounted?
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Old 03-31-14, 12:23 PM   #3
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Just put the bike on a stand and put it in the lowest gear and have a friend spin the he11 out of it. Then you can take some sandpaper and sand down the tire. Should be able to take off a couple of millimeter with no problems...

It is just extra rubber used to protect the tire during shipping anyway.

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Old 03-31-14, 12:39 PM   #4
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Does he have the spacer between it and the frame?
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Old 03-31-14, 03:02 PM   #5
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Does he have the spacer between it and the frame?
good question. extending the fore end of a front brake or the rear end of a back brake will provide more clearance.

but i think the OP is questioning whether or not Campy has made a wholesale change as regards clearance in recent editions of the record line.

BTW, why would your friend have to buy and older version? didn't he or she just remove an older and workable version? just asking.
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Old 04-01-14, 09:07 AM   #6
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Maybe you could provide a less clear photo?
Actually, I can. I took three or four with a crappy cell phone camera and this was the best photo, believe it or not.

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Is it the exact same wheel also?
Same wheel. Same tyre.

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Does he have the spacer between it and the frame?
Not sure. If it's not raining, I will likely ride with him on Friday or Saturday.

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BTW, why would your friend have to buy and older version? didn't he or she just remove an older and workable version? just asking.
His five or six year old record rear brake broke.
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Old 04-01-14, 10:12 AM   #7
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His five or six year old record rear brake broke.
The brake or just its return spring?

The springs are wear items which fatigue, fail periodically, and cost $5-$10 to replace (buying locally costs a bit more, and the double sided single pivot part is a couple dollars more expensive).

BR-RE008 is the spring for dual pivot Record (and many lower level/vintage combinations) brakes. Front and rear dual pivots are identical except for the center bolt and mounting nut lengths.

BR-RE208 (formerly BR-RE108) is the spring for rear "differential" single pivots

I find it easier to install the dual pivot return spring and then pop the steel ball in the center-pivoting brake arm's end over the cam. A cone wrench works well on the thin nut flats on the outside pivot.

On the rear differential brake I tighten two nuts against each other on its center bolt to keep it from turning when adjusting preload. The spring flips out of the way so you can get a wrench on the nut holding it to set preload and keep that nut parked when tightening the tall locking nut which also spaces the brake out from the frame's brake bridge.

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Old 04-01-14, 02:02 PM   #8
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What do you think?
That's a dual pivot brake and he probably had the more common single pivot "differential" rear brake which has more tire clearance.

In 2001 Campagnolo introduced that option to drop Record caliper set weight from 348 to 308 grams and do better bench-racing against Shimano's 318g/pair 7700 Dura Ace parts.

He may also have started with a pre-skeleton (2007) brake made from different forgings, although I have no clue about the dimensional differences between the old brakes which suit my tastes and skeleton style which does not.

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Old 04-01-14, 02:20 PM   #9
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Not exactly a by the book fix, but you can often get a couple more mm of clearance if you play with these screws and the angle of the caliper on the frame to keep the arms balanced.



Heads up, you'll probably have to move your pads as well.
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