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Three cool scores, three stuck seatposts...

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Three cool scores, three stuck seatposts...

Old 10-05-21, 08:27 PM
  #26  
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Originally Posted by 52telecaster View Post
That they are. I just picked up two t.a. cranks set up 26-44-49. Gonna use em both as half step and granny.
Nice!
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Old 10-06-21, 09:59 AM
  #27  
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In the world of stuck seat posts, everything works "SOMETIMES". Do enough of them, and you will end up cutting one out. Its just how it goes.

Endless threads on how to get stuck posts out, probably over 1000 of them.
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Old 10-06-21, 10:10 AM
  #28  
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Wow, this is when it pays to be a tinkerer -- lots of good parts on each frame. Great score!
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Old 10-06-21, 11:09 AM
  #29  
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NICE IM. Friction shifting and non-aero brake levers make it a 85.
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Old 10-06-21, 11:28 AM
  #30  
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Originally Posted by wrk101 View Post
In the world of stuck seat posts, everything works "SOMETIMES". Do enough of them, and you will end up cutting one out. Its just how it goes.

Endless threads on how to get stuck posts out, probably over 1000 of them.
I'm absolutely certain one of these is going to need serious stuff done. Maybe 2. I am considering drilling to a big enough diameter that I could use my kind of dull seat tube reamer as a big time fall back position. Thing is the trek is fine now and ready to build so I am waaaaay ahead.
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Old 10-06-21, 03:33 PM
  #31  
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Good job on the Trek!
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Old 10-06-21, 03:51 PM
  #32  
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Originally Posted by 52telecaster View Post
50/50? And which kind of atf?
...yes, mix it 50/50, and you need to mix it in an acetone resistant plastic bottle, not just any ole plastic bottle. Also it has a tendency to separate out when not in use, so you need to shake it regularly. I think I'm using Dextron right now, but anything will work that is labeled ATF. It works better than any of the commercial products. People don't believe this, until they try it.

If you keep a small, used Trifow bottle with an application straw in the nozzle handy, old bicycle things come apart much easier. So you don't damage as many little component bolts and machine screws, which makes your life easier. Mostly.
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Old 10-06-21, 04:48 PM
  #33  
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Originally Posted by gugie View Post
Good job on the Trek!
All I did was get out the seat tube and stem. But thank you. The stuff u do is unreal.
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Old 11-06-21, 08:29 AM
  #34  
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Patience is the best practice for the challenging corrosions ...

My latest battle was a
pprox one month battle to remove a seized seat post that was stuck in metal frame seat tube.

AL Nitto seatpost.

Start using PB Blaster spending one week applying to post from bottom bracket and from top of seat tube.

Flipping frame and using rubber mallet to hit / twist seat tube from top.

Next using KRoil spending one week applying to post from bottom bracket and from top of seat tube.

Flipping frame and using rubber mallet to hit / twist seat tube from top.

Next using CRC Freeze-off spending one week applying to post from bottom bracket and from top of seat tube.

Flipping frame and using rubber mallet to hit / twist seat tube from top.

Next cut off top of seat post and drilled holes on both side to insert long screw to be used with longer metal poles.

Used this to gain max torque for twisting seat tube.

After many attempts to twist off over one day and adding more penetrating lubricant between attempts, the post finally twisted free.

Victory !


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Old 11-06-21, 10:04 AM
  #35  
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Still got two to go....
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Old 11-06-21, 10:24 AM
  #36  
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The Ironman is at least a 62. And if it's the original seatpost, that baby is LONG, like 230mm (okay, that isn't really long, but I'm used to 190 posts on C&V). Pity some short person got a huge frame and slammed the seatpost on it! Probably thought "the bike fits me really well, and I'm 5'8"!"
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Old 11-06-21, 10:26 AM
  #37  
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This is going to start being a problem again with dropper seat posts. People tend to get the longest extension they can and slam it in the frame. That means it never gets moved and there’s nothing to grab on. Aluminum in aluminum, too.
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Old 11-06-21, 10:39 AM
  #38  
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Originally Posted by genejockey View Post
The Ironman is at least a 62. And if it's the original seatpost, that baby is LONG, like 230mm (okay, that isn't really long, but I'm used to 190 posts on C&V). Pity some short person got a huge frame and slammed the seatpost on it! Probably thought "the bike fits me really well, and I'm 5'8"!"
French fit should only be done with little laprade seatposts!

I had pb blaster in the centurion for weeks upside down and none made it through the seat tube. Radical measures will need to be taken.
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Old 11-06-21, 10:41 AM
  #39  
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Originally Posted by Darth Lefty View Post
This is going to start being a problem again with dropper seat posts. People tend to get the longest extension they can and slam it in the frame. That means it never gets moved and there’s nothing to grab on. Aluminum in aluminum, too.
Seatposts are so long nowadays, whenever I buy a new kalloy for a project I cut it down to a reasonable size just because.
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Old 11-06-21, 12:12 PM
  #40  
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I usually walk away from stuck seatpost buys but couldn’t resist. PB Blaster, wrenching and turning it in a vise didn’t work. Not enough seat post exposed so it only the stripped the post from the mounting bracket. Now bracket spins independently of the still stuck post. Next step is a hacksaw to cut the bracket off and pour caustic soda down the tube. Good times.

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Old 11-06-21, 12:35 PM
  #41  
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As a last resort yes, it is possible to drill out a stuck seatpost. See this thread, The down side is the cost of the drill and extension.
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Old 11-06-21, 01:22 PM
  #42  
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On a recent 85 Torpado, I passed on a stuck seat post. I got a call back from the seller that his son in law got it out. Crank removed and coka cola poured in. Big wrench on post and twisting then. Post a bit scarred up, but usable. As others said, different methods work sometimes. I was surprised actually.
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Old 11-06-21, 01:22 PM
  #43  
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Got my first one out with a hacksaw. Haven't tried the second yet, which also has a frozen stem.
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Old 11-06-21, 03:11 PM
  #44  
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Maybe a lag bolt and impact gun if you end up cutting it off?
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Old 11-07-21, 07:28 AM
  #45  
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Originally Posted by Narhay View Post
After soaking in penetrant take the clamp hardware off the seatposts until it looks like a little hockey stick. Find a sewer grate or a very well mounted vise and put the seatpost head into one of the slots. Twist using the frame as leverage.
And if you need additional leverage, stand away from the head tube and feed an eight-foot 2x4 between the head tube and the seat tube. Leaning on that will multiply your force so tread carefully. You might need a volunteer to brace the frame at vertical during your efforts.
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Old 11-07-21, 08:27 PM
  #46  
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Seatpost blaster



Drop the cocktail of looseners then hope the seat tube doesn’t shear...
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Old 12-04-21, 08:32 AM
  #47  
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After trying pretty much everything except caustic soda I decided to start removing stock. I figure if I can't get it all out that less caustic soda would be needed eventually.

I carefully drilled the center of the seat post and then





started with a 3/4" stepper bit. I eventually needed an extension but now have a 3/4" hole completely through the seat post. I have a 25mm stepper on order. The cool thing about these bits is they follow the previous hole. If I can get a 25mm hole without damaging the seat tube my adjustable reamer will fit.
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Old 03-03-22, 06:22 PM
  #48  
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27.2 seat post in place

3 inches of seatpost removed.
my son says he will shorten a stock modern seatpost to give him a French fit with 3/4" showing. At least this bike will get used
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Old 03-04-22, 08:34 AM
  #49  
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Originally Posted by Mad Honk View Post
mix of acetone and atf
Yup, good old fashioned mix.

Yet perhaps the cheapest penetrant is standalone diesel fuel. It really is an oil, not a gas, does not evaporate. Buying it in jerry cans allows me to fill up entire tubes and stays with it.

And when I drain it, I catch it all and store it for future use again.

PB blaster is just too expensive to use in quantity.
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Old 03-25-22, 01:09 PM
  #50  
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Here is the running iron man. My son prefers a bit of a French fit. So glad two of the three got running. The Peugeot is next winters project.
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