Record-12 brake clearance update

[djdj]

Counterpoint -- that bike wasn't built with 28 tires in mind and you will probably get all of the comfort and grip you need with 25 Veloflex and not have to worry about clearance.

[clarendon]

Thanks all. Very helpful and duly noted

[Mark McM]

Originally Posted by clarendon

Also - what does the screw on the other side do..

It adjusts the tension on the return spring (turn it in to increase tension, out to reduce tension). It won't affect geometry or centering.

[R3awak3n]

Originally Posted by djdj

Counterpoint -- that bike wasn't built with 28 tires in mind and you will probably get all of the comfort and grip you need with 25 Veloflex and not have to worry about clearance.

its true, with veloflex tires I would be more worried that they just disintegrate while looking at them than the different in comfort between a 28 and 25.


That said I still rather ride a 28 than 25 so I understand the OP BUT I would not spend significant amount of money trying to get there. Say buy a new brakeset.... however, you could get a set of EE brakes which would probably work.

[djdj]

I've had more problems with Vittoria and Continental than Veloflex, but to each his own as they say.

[oldpotatoe]

[QUOTE=clarendon;2800675]

Originally Posted by AngryScientist

no. in the photo below you see a tiny set screw to the extreme right of the photo (just below the pivot point). that's the one to play with. it's surprising how much it changes the brake geometry. give it a try.


Got it. That definitely helps. I can get 3mm of clearance that way between tyre and calliper. Any views on whether that's enough (or go back to 25s)?

Also - what does the screw on the other side do..

Adjusts spring tension. Oooops, thanks Mark.

[one60]

not sure if it was mentioned but adding a few washers between the brake and bridge would push the caliper out and upwards. Might be another way to obtain additional clearance?

[RonW87]

When people were riding aero Cervelos, 3 mm clearance was an aero feature!

[ntb1001]

I’m frustrated...need some advice.

I have a vintage steel frame I’m building with Campy Record 12.
I’m finding no clearance at all with the callipers...especially the front.
The tires are Vittoria Corsa Control 25c.
They run against the brake calliper.
I also put a different from wheel in the fork with 23c tires, and same problem.

Do these callipers have less clearance than previous versions such as 11speed ???

I’m going crazy with this!!






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[KarlC]

You just have to make the right adjustments, read this thread ......

https://forums.thepaceline.net/showt...ight=clearance

.

[Mark McM]

What does it look like with the cable attached and adjusted? Dual pivot brakes typically have the least clearance when the arms are fully open, and increase clearance as the arms close.

[AngryScientist]

KarlC is correct. That little tiny set screw changes the geometry of the brake a LOT and will fix you right up.

Also, thanks to Karl for setting me straight too

[Keith A]

Just curious, is this adjustment only on the 12-speed and not the 11-speed?

[ntb1001]

Tried adjusting..I’m not really seeing any difference although after attaching cable, I get some more clearance


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[RoosterCogset]

in today's world, that's kinda scary if a modern 12s caliper rim brake can't accommodate 25s.