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Shimano brake cable installation(6 posts)

Shimano brake cable installationJerry Allen
Jan 3, 2002 7:56 AM
Hey gang, I have a newbie mechanic question. I have not done much bike wrenching but I am having fun putting together a new Waterford frame. I have reached the final step which is the installation of the cables.
The Shimano service instructions for installing the brake cables shows what they call a "cable guide" which did not come with all of my Ultegra components. As best as I can describe it from the picture, it looks like a long piece of flexible plastic sheathing that the cable and outer casing fit inside. It appears to be "v" shaped and runs from the shifter/lever the length of the handlebar to where the handlebar tape would end.
However, the section of the instructions for the brake calipers that covers the brake cable installation makes no reference to this plastic "outer guide." The brake caliper instructions would have you tape the casing directly to the handlebars in several places to the point the handlebar tape would end. I have gone to my Zinn book and he too would have me use black electrical tape to tape the casing directly to the handlebars.
Can I live in peace if I install the brake cables without this "outer guide" or should I drop my Allen wrenches and head to town in search of this plastic gizmo?
IMO, you don't need it.cory
Jan 3, 2002 8:09 AM
I've installed brakes with it and without it, and I can't tell any difference. In theory I imagine it either protects the housing (probably unnecessary; it's plenty stout on its own) or smooths the lump where the tape goes over the cable (I never feel it anyway).
Then why does Shimano include it, except when it doesn't? Got me.
Jan 3, 2002 1:02 PM
re: Shimano brake cable installationtexbaz
Jan 3, 2002 6:23 PM
Could this plastic shealth possibly, if installed correctly make it possible to re-cable,and housing in a min amount of time? foregoing the need to rewrap the bars?
Whoa, you might be right! Never thought of it.cory
Jan 4, 2002 8:32 AM
Boy, do I feel like a dumb@ss NOW. If the housing will slip in and out under that stuff, I'm going to quit throwing it away.
Wanna bet?nee Spoke Wrench
Jan 4, 2002 1:26 PM
My prediction is that trying to force a new cable housing under the bar tape, through that slotted plastic thing and around the handlebar curve just isn't going to work.