Chesieresbike

I’ve read through all these comments and problems and I’ve come up with a solution that might work for some people who are having problems with their dropper post. Having used some uplift I discovered that the seat would not stay up or down. I tried doing a re-set, slackened off the cable, even took the cable out of the trigger unit but the seat would not lock in any position. I had to do the descent with the saddle fully up, which was quite disconcerting, unless I actually sat on it. When I got home and removed the seat post I realised that the post had been pushed too far down the seat tube (on a medium YT capra the Seat post cannot go all the way down), and had kinked the cable which had to go up the seat tube to exit out of the frame. Thus the friction was preventing the brake from engaging. This was all fairly obvious and not a fault of the tube but of installation. I had to replace both inner and outer cables and carefully followed the video instructions on the race face site. After this, the seat post works perfectly. Then after a few weeks another more subtle problem arrived: the seat was fine fully extended (although this is too tall for me to pedal comfortably), but would slip in any other position. Neither would it stay down but gradually come up. When I removed the post I could see the cable was slightly twisted and bent. I refitted the post, pushing it down to the point when the cable comes out of the frame, held the cable and then pulled the post up a bit to give a bit of tension on ththe cable and make sure there were no kinks or bends as it went into the frame and up to the post. On my bike this means the collar on the tube is a couple of centimetres above the top of the seat tube. After this, the seat post worked perfectly. It seems that any friction caused by the cable routing, causing any tension on the inner cable will mean that the brake cannot engage properly, causing all sort of problems. I have seen nothing from raceface about this, which may explain why posts have been returned having found nothing wrong. This is a problem of internal routing of cables, which may look neat, but one has no idea what is going on inside the frame. I hope this may help some folk resolve the problems they have been having.