I've dropped a seat post down the seat tube

Building up a new bike since i had mine stolen and testing numerous seat posts to see which fitted i dropped a seat post that was too small down the seat tube.

I've had the bike upside down given it a good shake and a hit but can't seem to free it.

anybody got any idea how i get it out?
its not going to do anything to my bottom bracket is it?

cheers
Andy

magnets

If the seatpost is aluminium and the frame is steel, magnets won't work.

aluminium...heh heh...

attach a spring toggle wall plug to the end of some dowel and pull it up once it opens on the other side of the seatpost

aluminium...heh heh...

Okay... aluminum...

scrunched up paper on the end of a stick (like a big cotton bud) , ram it into the seatpost and get it out. Sellotape the paper very well.

Remove BB and try to poke out? Pour loads of oil down and try and free it up?

Fucking bummer these random incidents.

reminds me of the number of times I lost spoke nipples in the rim doing my first wheel build this summer. I was always sure it'd gotten stuck in the rim and spend ages shaking it and trying to find where it was stuck then would stand on it half an hour later when weeping silently with a consolatory cup of tea.

Ah well. Those were the days.

as ever there is no one solution - you need a list of things to try.

get a v. long quill in there - or anything else which will slide in and you can open up to jam inside it once it's in. (open top post assumption )

you might try getting it upside down and whacking it with a rubber mallet on the bb - to shock it free. presumably it's not that tight if it's just fallen all that way. if not rubber mallet hit with hammer but place something softer (piece of wood) on anything you're hitting.

like the wall plug idea but will only work if the post's not all the way down.

if your BB is sealed and your post is closed at the top you could actually hose water (or compressed air - you can use the petrol station air line if you butcher a valve right. ) into a water bottle cage hole - forcing it out. or even vacuum it out from the top if you can a hose on the top sealed well enough

ultimately i'd guess removing BB and pushing it out with something can't fail.

if you can see any of it through the water bottle cage holes you can scrape it back towards top with something sharp

(if open top post ) if not too far the J bend in a spoke will nicely catch the bottom lip of it (i use one to measure depth of stuck posts i'm sawing ). if spoke not long enough, half screw nipple on spoke then screw another spoke into remaining thread giving a double long spoke
.if it won't catch enough, put spoke down to lip and ram something in to bung up post - pusihing spoke to side of post and seat tube

(i wouldn't have the patience but) put good glue on end of a stick and ram it into the post - leave to dry and it might pull out the post .

cant you get your missus to suck it out?

Inverse shim seems the only logical path

Inverse shim at the top of seat tube, yeah

cant you get your missus to suck it out?

Ooof!

I did a lol though.

How about a condom with glue on the outside. Dangle it in, inflate, wait for glue to dry, pull out little johhny.

Fill the seattube with Coca Cola.

Then add Mentos.

Fill the seattube with Coca Cola.

Then add Mentos.

hahahahahhah good idea

toilet brush on a mop stick.

I'm thinking about all the seatposts I've ever owned or seen and trying to visualise how this can happen and I'm failing. Is this a magic seatpost with no clamp or layback?

was just waiting for this thread to go off ;-) hold tight

I'm thinking about all the seatposts I've ever owned or seen and trying to visualise how this can happen and I'm failing. Is this a magic seatpost with no clamp or layback?

I was thinking the same ...

?

Try Gravity - new improved Gravity.

I know,
hacksaw the seat tube,
get it out,
then gaffer tape it back up, seems to work for bamboo bikes

I'm thinking about all the seatposts I've ever owned or seen and trying to visualise how this can happen and I'm failing. Is this a magic seatpost with no clamp or layback?

I reckon it's one of these old ones that have a seperate clamp:

Fill the seattube with Coca Cola.

Then add Mentos.
Mcgyver's here!

I reckon it's one of these old ones that have a seperate clamp:

Pretty obvious, no?

Ooof!

I did a lol though.

How about a condom with glue on the outside. Dangle it in, inflate, wait for glue to dry, pull out little johhny.

Who has ~50cm length condoms though?

Oh wait, I have some!

have you got it out yet?
theres someone needs it on the fly
https://www.lfgss.com/thread53844.html#post1737406