Bicycle Mechanics - No threading in cable guides.

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View Full Version : No threading in cable guides.


yudhoyono
07-02-11, 05:36 PM
http://img807.imageshack.us/img807/1993/img2720zv.jpg

Hi, does anyone know how to thread a cable guide?


FBinNY
07-02-11, 06:54 PM
That's a strange looking cable guide, Is the central insert removable?

if so, and the guide isn't threaded, your best bet may be to leave it as is and use a stepped ferrule. If you need an adjuster, you can use one inline on the housing.

If you want to thread it, start by measuring the ID, and seeing what the thread nearest available adjusting barrel has, then go to a tap drill chart like this one (http://www.physics.ncsu.edu/pearl/Tap_Drill_Chart.html) to see what you need to drill it out to, then drill and tap it. The close clearance to the tube will make this job a royal pain, but it is possible. Now that you see the implications, you might decide to simply use the stepped ferrule.

In any case do not start the job, until you've laid out what you'll need, and how you'll do it.

ultraman6970
07-02-11, 07:43 PM
Doesn't need to be threaded, u have two options i believe unless somebody knows more.

1 put the cable adjusters/barrells inline (jagwire has them), a lot of bikes come like that lately. Si probably if you ask in your lbs probalby you will find them.

2 jag wire has a cable adjuster barrel that just go inside of that cable hole and it will turn in itself when tension is applied to the cable. It works pretty good, BMC bikes use them.

Good luck


BCRider
07-02-11, 09:13 PM
It's not threade because normally those sort of housing stops don't receive a threaded barrel adjuster.

You can easily drill it out and thread it but the trick will be how to hold the tap nice and steady as you start the threads and how to turn it without making it wobble. You're tools and skills will decide on how you manage that.

yudhoyono
07-02-11, 11:26 PM
I fixed it. The center thingy was suppose to come out, and a barrel adjuster took its place.