Saw an good video last night showing how you can use dental floss to help guide a new cable through frames with internal routing.
I have also used capillary tubing in the past but wondered if anyone else had any tips.
remove the outer leaving the inner in place
thread the new outer onto the old inner
remove old inner and fit new one
or remove inner leaving outer in place
thread in new inner
remove old outer leaving new inner in place
fit new outer.
job done
I guess dental floss is good because you can use a vacuum cleaner to suck it through. Make sure you keep a grip on the other end though.
The one I saw used fishing line and gaffer tape. stick the cable in one end, push it until you see it at the head tube/seat tube.
Thread the fishing line through the hole you want the cable to go to, find the end again at the HT/ST using a hook of some type (bent coat hanger bits). Tape the line and the cable together with a small amount of gaffer. Pull the cable back into the frame gently until it clears the hole you want it to go through, then pull it through the hole (again, gently) using the fishing wire.
or something like that.
Only use stainless cables with a welded end....it will not fray.
Avoid the old-school double-ended cables where you would have to cut one nipple off before threading.
Think it through, have a break and rethink again before starting work....or you may get it wrong.
Seems unavoidable that the new cable may be contaminated by either the old outer or the new outer that has had the old inner pushed through.
Not exactly a well-thought-out solution really, is it?
PaulD
Seems unavoidable that the new cable may be contaminated by either the old outer or the new outer that has had the old inner pushed through.
Not exactly a well-thought-out solution really, is it?
its a bike not heart surgery.
if you notice a difference in performance or longevity from doing that your cables probably didnt move anyway and needed cutting.
but if you want to make an easy job hard for the sake of it - feel free ....
This was the [url=
Another technique I've used is to tie a small nut onto thread, then pull it through with a magnet - doesn't work on steel frames obviously 🙂
Seldinger technique.....
Useful for putting big lines into people's necks too.....
DrP