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Wheres the break in?(10 posts)

Wheres the break in?koala
Feb 24, 2002 1:46 PM
I now have spent a little time on the road with my new chorus group. I upgaded from 8 speed campy. The shifting is smoother and other than overshifting on downshifts because the action is easier all I can say is that its great. Where is the stiffness that is supposed to occur when new?
"break-in" doesn't exist.......CT1
Feb 24, 2002 2:15 PM
I've built numerous Chorus and Record C10 bikes and this "break in" deal just doesn't exist.

*** IF (and I repeat IF) the cables are routed properly and don't have any kinks or burs on the cut ends, a Chorus or Record shift system will word perfecto (I.e. no break-in) right out of the box. It is critical that the cables are "finished" properly though.

JohnG
"break-in" doesn't exist...... or does it?Elefantino
Feb 24, 2002 2:59 PM
Having not ridden a Campagnolo-equipped bike since my '72 Raleigh was stolen in college, I can't speak to Chorus or Record.

But having built Shimano bikes, and having had them built for me, I make sure the cables are properly stretched before they are installed.

Perhaps there are some wrenches who cut corners and don't stretch the cables beforehand. Perhaps that's where the "break-in" idea comes from.

Just a thought. I don't know what else it could be.

FWIW,
Mike
"break-in" doesn't exist...... or does it?Bruce MacKenzie
Feb 24, 2002 3:42 PM
The break in really happens with the bushing systems, or some thing like that VS the ball bearing systems.
I don't think this is a cable "stretch" issueCT1
Feb 24, 2002 3:46 PM
Cable stretch should only effect the "fine tuning" of the gear selection. To be perfectly honest I notice I need to tweek my barrel thingies about once every couple of months..... ??? BTW, how do you recommend pre-streching a shift cable??? TIA.

I suspect the "break-in" deal has more to do with cable housing prep than anything else. If the cable housings have sharp bends or kinks or the ends have funky burs on them then the cable will not move though the housing easily. Also, a bur or grit on the BB cable guide will cause all kinds of grief.

FWIW: I goofed and ran short on the standard campy shift cable setup once and built a Record bike with "aftermaket" shift cables. ARGH..... that bike shifted VERY stiffly .... until I replaced the cables with Campy parts. ???

Just a thought
JG
cable stretches.. does it?cyclopathic
Feb 24, 2002 3:46 PM
Mike,

cables are sold pre-stretched nowdays so this is not an issue. What has been mistaken for stretch is the ferrules. Quite often they are not seated properly and they move up the cable at initial use.

CP
It's not with Chorus or RecordMcAndrus
Feb 24, 2002 6:22 PM
The Campy stiffness is with Veloce and Mirage. I have Veloce on my old Bianchi. Once the shifters wear in (a couple of months?) they shift just fine. In fact, they always shifted just fine but after they wear in they shift very nicely, with no stiffness. I hear the same effect takes place with Mirage.

I also have some Chorus shifters which we perfect day one and still shift flawlessly.
Thanks all! n.m.koala
Feb 25, 2002 4:32 AM
re: Wheres the break in?vitusdude
Feb 25, 2002 4:47 AM
The break-in period relates more to daytona (centaur, whatever) and veloce which use bushings in their ergo shifters, unlike chorus and record which use ball bearings.
re: Wheres the break in?templecat
Feb 25, 2002 10:52 AM
Depends on the setup, if it's dialed in and ya got no problems then fine. My Chorus 10 was skipping gears on ride 2 & no amount of adjusting the barrel/hi-low settings would make it run. Had to reset the cable... now it's smooooth.