robertbb wrote: Calnago wrote: ↑
Fri Apr 26, 2019 12:35 am
No, there is no loss of braking efficiency as a result of that. The stop is a stop, a hard stop. Super Record brakes are still the smoothest operating caliper available, bar none.
The difference is astounding. Like night and day. Have a good look at that ferrule piece on a set of C/R/SR brakes as you pull the lever and engage the rim. It moves! Which means it's losing power and the "system" overall isn't as stiff. Nowhere near as stiff, actually, as the threaded system.
If you're bored, give it a shot and see. They're cheap, and the logo says "Campagnolo" in the black-on-white logo that complements Record/Super Record nicely:
https://www.wiggle.co.uk/campagnolo-ske ... ual-pivot/
Night and day I tells ya!
Ha... Yes, I’m familiar with the non series calipers. They are the same design as the Chorus calipers. They actually have a bit more clearance than Record or SR which is why I used them on the Koppenberg to test out some bigger tires. But since I’ve settled on 25mm tires I’ve gone back to SR calipers. If you are experiencing night and day difference in performance, with your non series calipers offering up better performance than SR for example, then you’ve got an issue somewhere else in your system, assuming there’s nothing broken in the calipers themselves.
Here’s a Chorus caliper, same overall design as the non series caliper, just a bit higher quality materials if I’m not mistaken (and I could be on this one). But the design is the same...
I know exactly what you’re referring to with the difference between the housing stops, but once the cable is installed, that part of things is irrelevant to the function, except for the SR and Record being easier to adjust with half turn notches etc and no need to lock it down afterwards by tightening the threaded lock nut.
There’s a whole lot of things that could affect the function between the lever and the caliper however. Here’s a list to start with...
- is every end of every piece of brake housing cut square with no metal burrs left over from the cut, or messed up liner causing friction. The ends should ideally look like this...
Versus just a cleaned up version of this...
A small burr can really create a rough feel when pulling the lever.
- Is the end that enters the lever completely and fully seated. It’s easy for that to move around a bit during lever install and adjustment. If it’s not bottomed out within the lever, there’s a big potential source of mushiness.
- internal cable routing bends from bars through headtube etc etc. Every bend adds to the friction. And the tighter the bend, the more friction created.
- Are there any rough edges that the inner cable has to pass over, particularly as it enters and exits the top tube if internally routed through it. It is impossible to see those edges on the inside of the tube but not hard to feel them as the cable scrapes over them. Some small pieces of liner to get around those edges helps a lot.
- make sure the housing stop on Record and SR at the caliper is seated properly and the adjuster is seated in its notches.
- Brake pad alignment, toe-in, etc is critical. Differences in any of these things are most certainly going to give different experiences when braking. Also, fresh pads vs old pads etc., same thing.
- at the end of the day, there’s a whole lot of things that happen between the levers and the final action at the rim. And the difference in function between the various standard Campagnolo rim brake calipers are not so great that if on identical setups a “night and day” difference is felt, then I’d be looking for an alternate explanation for that difference than the caliper itself. But SR are definitely the nicest. A further test you might want to do is to install the different calipers on the two different bikes, as none of the tests you performed tested the different setups from lever to rim completely.
I’m running the new standard mount calipers currently on two bikes currently. Functionally no different than the previous skeletons. But aesthetically they are gorgeous with the more subtle graphics, etc. and all blacked out.