RockHoundRider Posted April 24, 2005 Report Share Posted April 24, 2005 right guys, i have a big problem, i have sold my pashley 26mhz, and i want to strip it down to frame and forks and clean it up for the the bloke ive sold it too. however... my seat post (aluminium) will not budge out of my pashley (steel). there is no seat on the seat post, but i think that would make little difference. my problem is i want to get the post out, but it will just not budge, and i mean i have even got them big pipe/anything destroying grips to try and twist it loose, neither i or my dad can get it to budge at all. i have put large amounts of WD40 on it to seep down, and has been there for several hours... now, can any one give me any suggestions to try, i know alu compresses easier in cold, but i dunno how i could do that... Any bright ideas would be good please... And if i cant get it out...Back up plans would be nice... Quote Link to comment Share on other sites More sharing options...
Spikenipple Posted April 24, 2005 Report Share Posted April 24, 2005 Heat it up instead of making it cold, hopefully the seat tube will expand more than the seat post. Quote Link to comment Share on other sites More sharing options...
Ali C Posted April 24, 2005 Report Share Posted April 24, 2005 but alloy expands faster than steel. If you dont want the post, try squashing it in a vice, or just squash it flat so a vice holds it then twist the frame. you need to shock it loose idealy Quote Link to comment Share on other sites More sharing options...
dave85 Posted April 24, 2005 Report Share Posted April 24, 2005 Ideas Quote Link to comment Share on other sites More sharing options...
David Posted April 24, 2005 Report Share Posted April 24, 2005 Put a seat on it and try and twist it loose? Quote Link to comment Share on other sites More sharing options...
Smo™ Posted April 24, 2005 Report Share Posted April 24, 2005 (edited) Personally (bit of a crazy idea) but if i was totally stumped I'd probably try bashing in the seat post with a hammer and chisel from 90 degree angles to try and compress it. For example: O = seat post - or | = direction of chisel . = a <space> ...| - O - ...| Meh, just brainstorming (not all that well mind you). Edit: Had to sue fullstops instead of spaces for some reason... Edited April 24, 2005 by Smo Quote Link to comment Share on other sites More sharing options...
Ali C Posted April 24, 2005 Report Share Posted April 24, 2005 "Aluminum seatposts frequently become stuck by corrosion also, and penetrating oil is almost useless against aluminum oxide. Fortunately, aluminum oxide can be dissolved like magic by using ammonia" Is ammonia piss? if so, you know what to do (Y) Quote Link to comment Share on other sites More sharing options...
RockHoundRider Posted April 24, 2005 Author Report Share Posted April 24, 2005 lol, well some interesting ideas...i dont think the sticking seat idea will work if i cant budge it with them grips...keep em coming guys... Quote Link to comment Share on other sites More sharing options...
David Posted April 24, 2005 Report Share Posted April 24, 2005 lol, well some interesting ideas...i dont think the sticking seat idea will work if i cant budge it with them grips...keep em coming guys... ← Im thinking leverage though. Put seat on and big pole over the end or something? Quote Link to comment Share on other sites More sharing options...
RockHoundRider Posted April 24, 2005 Author Report Share Posted April 24, 2005 WITH THESE GRIPS IVE GOT ABOUT 1.5FT OF LEVERAGE...SEE I THOUGHT IT WOULD BUDGE WITH ALL THAT, AND ITS NOT LIKE IM A PUSSY OR ANY THING (sorry about caps, just realised cant be arsed to type again) Quote Link to comment Share on other sites More sharing options...
Pauly Posted April 24, 2005 Report Share Posted April 24, 2005 "Aluminum seatposts frequently become stuck by corrosion also, and penetrating oil is almost useless against aluminum oxide. Fortunately, aluminum oxide can be dissolved like magic by using ammonia" Is ammonia piss? if so, you know what to do :) ← (Y) legend Quote Link to comment Share on other sites More sharing options...
Dr. Nick Riviera Posted April 24, 2005 Report Share Posted April 24, 2005 vice (Y) or failing that get everyone in your family to drink lots and find a suitably large bucket :)" but if you dont have a vice you mat be a bit stuck :P hows about getting 2 sets of pipewrenches/mole grips / whatever youre using and get 2 people levering them round , may work . all i can currently suggest , sorry Quote Link to comment Share on other sites More sharing options...
guineasmithpig Posted April 24, 2005 Report Share Posted April 24, 2005 ladies, ladies if there is sufficient seatpost sticking out of the frame, and room for the post go down a touch, simply bang the post down, into the frame, hence loosening the corrosive bonding. as ali c sed, u wanna shock it loose. once done, it should twist outta the frame ok. best way is with the frame upside down, and the post in a vice. plenty o leverage then. last resort would be gettin the post drilled outta the frame, and the seat tube reamed out. though i doubt ur everyday engineering shop would have tooling of that magnitude! or even better, a massive 'Easy-Out' tap (Y) anyways best o luck! smithy Quote Link to comment Share on other sites More sharing options...
Andy Vox Posted April 24, 2005 Report Share Posted April 24, 2005 It says: "The contents of a CO2 tire inflation cartridge applied inside the seatpost can shrink it down just enough to do the trick" Sounds like a plan, just buy one of those Co2 auto pump things. Loose it off inside and hey presto! Quote Link to comment Share on other sites More sharing options...
fairy elephants Posted April 24, 2005 Report Share Posted April 24, 2005 Clamp the seat post in a vice or similar, and use the frame for leverage (Y) Quote Link to comment Share on other sites More sharing options...
RyanRs Posted April 24, 2005 Report Share Posted April 24, 2005 I have the same problem with my alloy seatpost stuck in my steel DMR frame... i no how its happend, i was jumping in a river and although i remberd to take my dust caps off to prevent them from welding themselves on, i never thought about the seat post! i cant say i have tryed everything possible to get it out, but i did get a big adjustable spanner to it, with a 3ft bar on the end, and it wouldnt budge,instead it bent and twisted the adjustable spanner! :)( and i have tryed hitting it with a hammer, and used wd40. i think im going to leave the frame in my bedroom for a little while as i have a powerfull and extreamly bassy Small club sound system in there (i dj dark drum&bass and like it loud! lol) and every time i use the sound system, it unscrews my dumbell weights from my benchpress bar within 5 minutes (even when its done up reeeeeealy tight!!) So, Seatpost extraction by Drum&Bass ! ? ill let you all know if it works! Ry (Y) Quote Link to comment Share on other sites More sharing options...
Lawnmowerman Posted April 24, 2005 Report Share Posted April 24, 2005 smack it further into the frame to brake the weld then lube it up like a lesbian and twist it out Quote Link to comment Share on other sites More sharing options...
ben Posted April 24, 2005 Report Share Posted April 24, 2005 could you not drill a hole so you could put a bar though then get a fat kid to sit on the frame and pick him up with the bar is that makes sence ?? Quote Link to comment Share on other sites More sharing options...
sm_ben Posted April 24, 2005 Report Share Posted April 24, 2005 If I remember rightly Sodium Hydroxide gets Aluminium Oxide off thats why it's used in anodising. So try some of that (dont get it on your skin) if you cant source it find a product that contains it (many household cleaners have a certain %age of it) this should gte rid of corrosion. Try and aerosol of some kind like deoderant of something, you know if someone sprays it on your skin for ages it's freezing? (come on everyones tried it!) Try spraying this all over the inside of the seatpost which may just shrink it enough to budge it with a persuasion tool Quote Link to comment Share on other sites More sharing options...
Shaun H Posted April 24, 2005 Report Share Posted April 24, 2005 If I remember rightly Sodium Hydroxide gets Aluminium Oxide off thats why it's used in anodising. So try some of that (dont get it on your skin) if you cant source it find a product that contains it (many household cleaners have a certain %age of it) this should gte rid of corrosion. ← Sounds just about right, we did it in chemistry the other day (Y)" After that see if you can get a tube to fit in the saddle clamp, that should help. Quote Link to comment Share on other sites More sharing options...
RyanRs Posted April 24, 2005 Report Share Posted April 24, 2005 If I remember rightly Sodium Hydroxide gets Aluminium Oxide off thats why it's used in anodising. So try some of that (dont get it on your skin) if you cant source it find a product that contains it (many household cleaners have a certain %age of it) this should gte rid of corrosion. Try and aerosol of some kind like deoderant of something, you know if someone sprays it on your skin for ages it's freezing? (come on everyones tried it!) Try spraying this all over the inside of the seatpost which may just shrink it enough to budge it with a persuasion tool ← battry acid is also one of the most effective paint strippers, and speeds up oxidation in steel. not good! Quote Link to comment Share on other sites More sharing options...
Corish Posted April 24, 2005 Report Share Posted April 24, 2005 could you not drill a hole so you could put a bar though then get a fat kid to sit on the frame and pick him up with the bar is that makes sence ?? ← That one made me laugh (Y) Quote Link to comment Share on other sites More sharing options...
DaiTrials Posted April 24, 2005 Report Share Posted April 24, 2005 The best answers already been posted, im gonna 2nd that. or 3rd it even .... Hit it down, not up !! You'll break the seal and it'll be loose. Seat posts are thicker towards the bottom so by hitting it down, you stand a far greater chance of loosening it, once its loose it'll twist out so easily with a bit more greease, or wd 40 to make sure Quote Link to comment Share on other sites More sharing options...
Nick Garland Posted April 25, 2005 Report Share Posted April 25, 2005 Ben outa interest did you actually put paint on the seatpost like Bennifer suggested? If so I think I see your problem. Ill come down and help tonight if you want if its wet. Quote Link to comment Share on other sites More sharing options...
Tomm Posted April 25, 2005 Report Share Posted April 25, 2005 Find some way of attaching a scaffolding pole (or something equally long) to the post, and twist it. There's no way it can't come out with that. Quote Link to comment Share on other sites More sharing options...
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