User Tag List

Results 1 to 4 of 4

Thread: Seized Seatpost Removal Tricks #2

  1. #1
    Join Date
    Jul 2010
    Location
    Melbourne, Australia
    Posts
    34
    Post Thanks / Like
    Mentioned
    0 Post(s)
    Tagged
    0 Thread(s)

    Default Seized Seatpost Removal Tricks #2

    I wanted to post this in one of my favourite ever vsalon threads Seized Seatpost Removal Tricks but couldn't as it's in the Knowledge.

    In any case I came across this bikeradar article Watching this DIY seized seatpost remover work is ASMR for mechanics yesterday and thought that it would make a worthy addition to the great repository of knowledge in that thread. Maybe a mod could add it?

    Andrew Lang has made an ingenious seatpost removal tool that works a bit like a giant bearing puller, anchored at the bb that pulls a stuck post straight up with no twisting. Stirling Bike Doctor's instagram has a whole stack of videos of his ingenious tool at work along with a bunch of other cool stuff.

    I would be interested in the salon's views on the merits of pulling a stuck post out this way, anchored by the bb.
    Hugh Horsfall

  2. #2
    Join Date
    Feb 2013
    Location
    London, UK
    Posts
    4,761
    Post Thanks / Like
    Mentioned
    4 Post(s)
    Tagged
    0 Thread(s)

    Default Re: Seized Seatpost Removal Tricks #2

    There isn't one answer for a problem that can grow in multiple ways: corrosion between titanium and aluminium is a lot different from the resin of the carbon into a steel tube.

    IMO, the biggest problem is not to save the seatpost (you are most likely to bin it whatever happens: either has lots its nominal OD and will be damaged anyway) but to grab it to have good purchase.

    My idea was to have a series of expanding "collets" of suitable length (say 60-80mm) to be fitted inside the seapost after its head has been cut. Those collets will provide the necessary strength for a split-clamp that is a similar length as the "collet", so you can properly tighten it and spread the load on a great surface.
    I've seen too many carbon seatposts cracked or failed while removing, the heat that comes by the friction of the seized parts is a cause for the resin to soften and the carbon matrix fails. This problem is reduced by pulling instead of twisting, so a rig as above is a very goo idea, yet the problem is not fully removed.

    Our way to remove a seatpost that we can get to move a little, is to have 3 men working: with the seatpost locked in a big vice, two blokes will twist the frame working in tandem and the third one will pull. It's a hell of a workout but often we can get it. Needless to say, some frames are too delicate for this and we don't even try once.
    Andrea "Gattonero" Cattolico, head mechanic @Condor Cycles London


    "Caron, non ti crucciare:
    vuolsi così colà dove si puote
    ciò che si vuole, e più non dimandare"

  3. #3
    Join Date
    Jul 2011
    Location
    NoVA
    Posts
    1,194
    Post Thanks / Like
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)

    Default Re: Seized Seatpost Removal Tricks #2

    on the collet note: blind bearing puller/slide hammer if the seatpost is trashed anyways. Just have to cut the seatpost short enough that the puller fits in

    M
     

  4. #4
    Join Date
    Oct 2008
    Location
    Kingman, AZ
    Posts
    4,412
    Post Thanks / Like
    Mentioned
    4 Post(s)
    Tagged
    1 Thread(s)

    Default Re: Seized Seatpost Removal Tricks #2

    I used two long handle screwdrivers that fit in the saddle rail clamp. It sounds like I'm torturing an animal, but it works.
    Weight Doper

Similar Threads

  1. Boston area seized seatpost removal?
    By cantdog in forum General Discussion
    Replies: 2
    Last Post: 10-07-2018, 06:44 PM
  2. Stuck Grip - tips and tricks for removal appraciated
    By Britishbane in forum VSalon Pro-Bicycle Tech
    Replies: 15
    Last Post: 02-23-2016, 12:42 PM
  3. Seized Bottom Bracket Removal??
    By BShow in forum VSalon Pro-Bicycle Tech
    Replies: 19
    Last Post: 10-27-2011, 07:54 PM
  4. Seized Seatpost Removal Tricks
    By anthonymaietta in forum The Knowledge
    Replies: 56
    Last Post: 06-04-2011, 12:28 PM
  5. Dropout Adjuster removal tricks
    By Jonathan in forum The Path
    Replies: 10
    Last Post: 11-08-2010, 08:21 AM

Tags for this Thread

Bookmarks

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •