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I've just bought a 2nd hand Reverb dropper post.
At full extension, locked, the saddle moves up and down - like a suspension seatpost. I've never even tried on before so I need to know; Is that normal or does it need some fixing?
Thanks...
its not normal. it needs a full service. its got air where it shouldn't have air. I hope you got it really cheap...
Not right should be solid when you sit down usually some rotation movement try a bleed and check pressure.
When you fitted it did you bleed it afterwards?
If it's not a stealth bleeding should not be required.
Post should not sag.
Mine had similar - there is a small white bit inside that breaks, causing this. A full service will sort it.
PS - Ive just bought a new one for £188 from BikeDiscount.de
It was cheap - £40
So I'll get it serviced - Thanks guys
Air has migrated past the IFP, really common, especially if you ever pick the bike up by the saddle with the post down, hang it on a rail with the seat down etc.
Service will sort it easily enough. Any decent LBS should be able to sort it.