Anyone having issues with dropper seat post on a Cube Stereo One44?

[MichaelDUK]

Anyone having issues with dropper seat post on a Cube Stereo One44 2025? Base keep sliding and won't stay up and seat keep dropping due to cable being pulled when turning. while riding. The LBS is trying to keep a frame replacement.

 

[mcmcmc]

I watched a YouTube video about dropper post installation as I was looking for some tips for my other bike. I can't find the exact video, but it was one of the 'Syd Fixes Bikes' ones. One of the things they warned about was that exact issue, but it sounded like it stems from a setup problem rather than a fundamental problem with the dropper post - so maybe a cable/sheath & a tiny bit of labour. I think the gist of it was if the cable sheath that comes out of the frame near the handlebars was cut too short, turning the bars would have the effect of triggering the cable so either the seat drops or pops up.

 

[Rando_12345]

Had some issues on my one77 with stock post. I moved it down a few cm for bikepark riding and it totally messed up the post, it kept rising slowly etc. I think the cable housing and the post mechanism are quite finicky. I reset it the position and gave the cable extra slack at the lever.

 

[Mikerb]

if that is a carbon frame you need some carbon paste gripper on the base of the post where the seat clamp goes. If the base is not secured that will of course cause problems with the cable operation. So sort the base fixing first then see what the cable operation is like.

 

[steve_sordy]

If the post is set up for correct use and then the post is pushed further in, the hose emerging from the bottom of the post is at high risk of kinking. When kinked, the inner wire does not move smoothly through the outer hose and the post doesn't work properly, if at all.

When moving the whole dropper, it is important to maintain tension on the hose by pulling on the other end, ie the end with the remote.

Early on in my dropper history, the LBS guy pulled the dropper out of the frame to give more room to apply his workstand clamp. No problem there, but when he shoved it back in, the hose kinked and the dropper didn't work. Unfortunately for me, his action damaged the dropper hose/wire and it needed resetting. If the LBS guy had pulled on the remote end when shoving the post back in all would have been well.

 

[Mikerb]

If the post is set up for correct use and then the post is pushed further in, the hose emerging from the bottom of the post is at high risk of kinking. When kinked, the inner wire does not move smoothly through the outer hose and the post doesn't work properly, if at all.

When moving the whole dropper, it is important to maintain tension on the hose by pulling on the other end, ie the end with the remote.

Early on in my dropper history, the LBS guy pulled the dropper out of the frame to give more room to apply his workstand clamp. No problem there, but when he shoved it back in, the hose kinked and the dropper didn't work. Unfortunately for me, his action damaged the dropper hose/wire and it needed resetting. If the LBS guy had pulled on the remote end when shoving the post back in all would have been well.

Very true @steve_sordy . It does depend to a degree on how well the cable is routed especially where it has to do a near 90 degree turn up in the bottom of the seat tube. I am currently dealing with a dropper issue on one of my bikes although I suspect my problem is the sealed cannister because it sounds "squishy". It still works but I have wait 2 or 3 seconds for it to lock down. Regardless I am changing both dropper and cable as the bike has done nearly 2000 miles.

 

[Eliadn]

Anyone having issues with dropper seat post on a Cube Stereo One44 2025? Base keep sliding and won't stay up and seat keep dropping due to cable being pulled when turning. while riding. The LBS is trying to keep a frame replacement.

Last month I did some work on my father's One44 dropper. It was slow to go up and also didn't really want to go down either. When I pulled it out, there was a big kink in the cable. I also think the housing was slammed against the actuator.
I replaced the cable, fixed the housing position a bit better and now it works like new. Also adjusted the crappy lever as well.
Be careful not to pull on the housing like a lunatic, it can slip out of the frame. Push+pull at the same time works like a charm.
The kink happened because my father replaced his seat which was a bit taller and he had to push the dropper inside, not knowing about the cable tension. And then he tried to "fix" it himself (he used screwdrivers to seat a tyre once )

 

[Mikerb]

I don't know what the situation is with with all cable droppers but on my CrankBros the inner cable stop fits into the actuator at the bottom of the dropper post, then is fed into a slot below that. The cable outer then merely slides up the round hole coming to a stop ridge in the hole. There is nothing other than correct adjustment of the cable outer keeping it in place. So as others have said here, if you pull the dropper upwards without at the same time pushing the cable towards the dropper, you risk releasing the cable outer from its held position.. If you lower the dropper without pulling on the cable you risk kinking the cable. Moral of the story which few people are told, and that seems including some lbs folk, you cannot set seat height just by releasing the seat tube clamp and pushing or pulling the dropper! ( I have seen that done when a bike is set up in lbs for a new bike buyer)

 

[ggx]

Sommetimes it´s only dirt inside collar.