Seat bother...

[OldManGraham]

Only me !!

On my ride today I began having trouble with my behind, seat kept getting lower and lower, the bolt simply will not tighten, nothing to hold onto to tighten it, cant understand why its suddenly decided to free itself, am I missing something here?

Thanks in advance..

 

[DCLane]

Try some carbon seatpost paste, which will work on any seatpost.

Also the bolt looks a bit old. Replacement needed?

Alternatively, have you been on the during lockdown?

 

[OldManGraham]

Try some carbon seatpost paste, which will work on any seatpost.

Also the bolt looks a bit old. Replacement needed?

Alternatively, have you been on the during lockdown?

Indeed there has been lots of food consumed, the bike is nearly 40 years old, I may have to try the seatpost paste if I cant fix it, thanks. 👍

 

[mjr]

I doubt the paste will help if the bolt isn't holding tight any more, BICBW.

What's the bike? Someone here may know how it fixed and even any common failures of that type of fixing.

It could even be that the bolt has snapped inside the housing but in a way that doesn't let it simply fall out. Have you tried undoing it?

 

[OldManGraham]

I doubt the paste will help if the bolt isn't holding tight any more, BICBW.

What's the bike? Someone here may know how it fixed and even any common failures of that type of fixing.

It could even be that the bolt has snapped inside the housing but in a way that doesn't let it simply fall out. Have you tried undoing it?

Raleigh Winner, yes it isn't coming out anytime soon, seems such a simple problem, but then again could be completely knackered.

 

[midlife]

Is it an old steel seat post?

 

[figbat]

The nearest end of the bolt should have a key on it that locates in a slot on the frame, thus keeping it from rotating as you tighten the nut. Possible that the key and/or frame are damaged? Or that the bolt is in the wrong way around?

 

[Cycleops]

Can you do up the bolt? Is it just turning and turning? Try a new bolt as suggested above.
If the bolt is not faulty it could be the frame itself maybe has a crack which means it will never get fully tight.
Also looks like there a bit of corrosion inside the seat tube do clean that out.

 

[OldManGraham]

It tightens then loosens, like its cross threaded which it simply isnt, I will inspect the seat tube further thanks.

 

[Deleted member 1258]

It tightens then loosens, like its cross threaded which it simply isnt, I will inspect the seat tube further thanks.

Sounds like the thread is knackered, maybe time for a replacement bolt.

 

[OldManGraham]

Thanks Dave, hope its just that 👍

 

[OldManGraham]

Is it an old steel seat post?

It is mate

 

[OldManGraham]

The nearest end of the bolt should have a key on it that locates in a slot on the frame, thus keeping it from rotating as you tighten the nut. Possible that the key and/or frame are damaged? Or that the bolt is in the wrong way around?
View attachment 541449

What can I use if anything on this key, I usually plump for a hammer but I feel that wont work... thanks.

 

[Ming the Merciless]

Take bolt out the frame and see if you can see why it won’t tighten up.

 

[rogerzilla]

The seat lugs on frames often get chewed up by overtightening or when a seatbolt with an anti-rotation lug on one side turns out to be harder than the lug. It is a common repair needed before a respray but uneconomic on a Winner unless it is of great sentimental value. There are other solutions, including a different bolt and nut or even cutting off the "ears", tidying up and using an external seat collar.