Debate: chasing drips on a rough cable housing vs just replacing it every time

I used to always try to save a few bucks by chasing down every drip in a shift cable housing with Tri-Flow and hoping it'd smooth out. Now if the housing is over 6 months old or has any rust near the ferrules, I just replace the whole run for like $8. Idk, is it wasteful to toss housing that could still work, or is it smarter to avoid the headache of a gritty shift on a 30 mile ride? Has anyone else made the switch to replacing more often?

3 comments

3 Comments

lucasjackson1d ago

That whole thing about settled housing binding in a new spot hit home for me. Last summer I tried to straighten out a cable that was already set into a perfect curve and ended up with my front derailleur doing this weird double-shift thing on climbs for like three weeks before I gave up and just replaced it. Something about housing having a "memory" I guess, like an old pair of jeans you can't bend different.

stella_lane2d ago

Stop thinking about it in terms of money and start thinking about it in terms of time. Ngl, what nobody talks about is the hidden cost of having to re-route the housing perfectly after you fix a drip. You mess with a cable housing that's already settled into a curve, and suddenly your bike is shifting weird because the housing is binding in a new spot. Honestly, replacing the whole thing is cheaper and faster in the long run than fighting a cable that doesn't want to behave after you've bent it back straight. Plus, fresh housing seals better against grit at the ferrules, so you're not just fixing one problem, you're stopping three more from happening. Wasteful is chasing a drip for an hour when a new housing run takes ten minutes and gives you zero drama for the next six months.

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norab211d ago

I get what you're saying about settled housing having a memory, that's a real thing. But I've had the opposite luck - replacing a whole run just because of one drip felt like overkill to me. I had a bike where the rear derailleur housing was routed through the frame and swapping it was a 30 minute nightmare of fishing cable through internal tunnels. A quick snip of the old ferrule and a dab of oil fixed the drip in 5 minutes and the shifting was fine for another year. Sometimes chasing that drip is actually faster than pulling the whole system apart, you know? Not every kink in the housing means it's shot, especially if you just loosen the bolt and let it find its own curve again.