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How do cross levers work?(3 posts)

How do cross levers work?buster
Feb 19, 2002 2:53 PM
Anyone have a clear idea how those brake levers that mount on top of the drop bars and interrupt the cable from STI brake lever.

I've seen it set up in a shop but can't figure the mechanics out. It doesn't grab cable, the cable just runs through it, so how does it pull cable?
re: How do cross levers work?Mike the Snake
Feb 19, 2002 5:20 PM
The end of the cable that sits in the STIs acts as an anchor, and the Paul's (that's what I have) push the cable housing away from the STIs, effectively shortening the amount of cable inside the housing. Voila, instant braking.
To get a better idea of this, grab the housing for your front brake, and pull it up from the stop on the brake. This is all those levers do. I didn't understand it either until everything was finally installed, then the little lightbulb inside my head emitted a faint glow..
Another way to put it...triangleforge
Feb 20, 2002 1:15 PM
The lightbulb went off in my head when someone told me to think of it this way -- while the levers don't pull the cable, they make the cable housing "longer" -- same idea as the example Mike gives...

Cheers!