OneUp 180 Dropper - Won’t stay up

[Johnny Utah]

Started out on my ride today and noticed I felt a little lower on the bike. I thought maybe the seatpost slipped in the frame, so I stopped and raised it a bit. When I Started again the dropper would sink an inch or so. As I kept riding it would just drop. Came up no issues but will not stay up.

Is this a cartridge issue or something I can fix at home?

Is it worth buying a new cartridge or just buy a post?

 

[moose35]

Came up no issues but will not stay up.

@MadisonDan

 

[shrpshtr325]

Started out on my ride today and noticed I felt a little lower on the bike. I thought maybe the seatpost slipped in the frame, so I stopped and raised it a bit. When I Started again the dropper would sink an inch or so. As I kept riding it would just drop. Came up no issues but will not stay up.

Is this a cartridge issue or something I can fix at home?

Is it worth buying a new cartridge or just buy a post?

View attachment 176949

First Check your air pressure. 250psi min. I think 300 is max.

When the cartridge failed in mine this was an early symptom eventually it wouldn't stay in place (would go up when standing and down when sitting) Warranty is 2 years they are very good about it ime.

 

[Ryan.P]

Is it worth buying a new cartridge or just buy a post?

One up v2 cartridge is like 25 bucks, takes about 5 minutes to change . Also looks like bushing should be replaced .

 

[Johnny Utah]

One up v2 cartridge is like 25 bucks, takes about 5 minutes to change . Also looks like bushing should be replaced .

Thank you, I will just order the parts if I am going pull it apart. The rebuild looks very easy.

 

[Santapez]

NSMB has an article on rebuilding the cartridge itself.

If it were me I would buy the new cartridge and attempt fixing them old one as a spare.

 

[mtbiker87]

Mine started acting up and pumped it up to 300psi. Works like it did when I got the bike again.

 

[scott62]

Have you tried the little blue pill? I have been told by a friend it helps keep things up.👍

 

[JimN]

I carried one of these around for years:

Amazon product

It won't fix your problem, but it'll make it so that you can keep the seatpost up and finish your ride when the post won't stay up on its own.

 

[rick81721]

Dropper posts = destined to fail. Sooner rather than later!

 

[thisterrence]

If you haven't replaced cable/housing in a while, that could be a factor. The friction can essentially semi-activate the dropper.

 

[Santapez]

Dropper posts = destined to fail. Sooner rather than later!

You don't use a dropper post on your mountain bike?

 

[rick81721]

You don't use a dropper post on your mountain bike?

Not enough. But a dropper is the only bike component that has failed more times than any other. I had two on my horsethief, got stuck in the middle of the sourlands with the post not staying up and had to get out and ride home on a clown bike. Ditched it and never replaced it.

 

[Johnny Utah]

Have you tried the little blue pill? I have been told by a friend it helps keep things up.👍

Are you offering to help?

 

[Johnny Utah]

The cartridge failed. All fixed now doe.