How should I know the right amount of conduit on this part? If I let too much it will make the cable less smooth?
by lantern264
How should I know the right amount of conduit on this part? If I let too much it will make the cable less smooth?
by lantern264
10 Comments
You want enough to not have any sharp angles
Also make sure you have enough slack for your bars to spin and not rip anything out.
You basically want as little curve as possible. The sharper the curve is, the worse it is. A more gentle curve that is longer is better than a sharper curve that is shorter. Straight sections don’t matter that much.
In this case, the cable needs to make an almost 180 degrees bend so there only so much you can do. The way you did it is going to be fine, a little shorter than pic 2 would also be fine if it doesn’t make the bend sharper. i’d personally choose the middle between your two pics. But overall, there isn’t much you can optimize in this situation.
That is the first time i’ve heard it called conduit, But you want enough that it’s not a really tight angle, but you don’t want a big flapping thing that’s going to get catch something easily.
First is fine, second is fine mechanically either, but I’d be worried about that loop catching a branch or anything like that
I had ran that derailleur with a sharper bend fine too
https://preview.redd.it/zg53a13ubrge1.jpeg?width=1280&format=pjpg&auto=webp&s=37bf1b96eb98927421c07287adf46e5654c9f9cf
First one fine. The angle going into the derailleur is not that sharp. The second is “better” in that regard, but too much housing there could cause issues with getting snagged by something while riding.
Not being a jerk but for what it’s worth the actual names is cable housing. There is brake and shift housing, as well as hydraulic hose for hydraulic brakes.
We call it housing in the bike world.
That should be good
Also, your derailleur isn’t mounted correctly. [The mounting arm should be pointing back, not down](https://frugalaveragebicyclist.com/wp-content/uploads/2024/06/0e9a8-shimano-tourney-parts.jpg?w=1024&h=1024)
This is better done with the drivetrain assembled and the derailleur in a preloaded position. What I found is two things you can get away with a pretty large looping curve without it getting caught on too much in my experience. You can also get away with making a nice clean and somewhat tighter curve and loop also and still have the same feel in the shifter. I’d go with the second loop test ride it and if you don’t like it you can always undo the cable trim a little bit off and put it back together
You want enough cable so the end cap/ferrule comes out of the derailleur straight. The second picture looks better to me. Also the ferrule is missing in your picture I don’t know if you forgot it or you intentionally took the picture that way.