It Worked! (Another Seized Seatpost Thread)
12-20-21, 04:08 PM
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It Worked! (Another Seized Seatpost Thread)
I knew the seatpost was stuck and I bought the bike anyway. After two weeks of PB Blaster, Liquid Wrench, wack’n with a hammer, ammonia, and promising myself to only hacksaw for two hours per day for as many days as it takes—I built this copy of a tool invented by a BF member (can’t find his thread).
Happy Holidays!
Happy Holidays!
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12-20-21, 05:19 PM
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Wow, patience, engineering, building, more patience. What does the bike look like?
How doe the tool work?
How doe the tool work?
12-20-21, 05:20 PM
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I take it the saddle fits in the rectangular space and you use the bike frame as a "wrench" while holding the tool stable (against wall, tool bench, etc)?
12-20-21, 05:30 PM
#4
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I have a giant adjustable wrench. I take the seat
off, hold the frame between my legs and twist. I've put a pipe on the adjustable wrench before. Still, It doesn't always work.
off, hold the frame between my legs and twist. I've put a pipe on the adjustable wrench before. Still, It doesn't always work.
12-20-21, 05:45 PM
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Put the saddle in the slot, stand on the tool, and twist the bike. There are two more cross pieces near the ends. The 2X4s are 8 feet long because.
On Topic & Eroica Compliant Ironman
On Topic & Eroica Compliant Ironman
Last edited by Classtime; 12-20-21 at 05:47 PM. Reason: Add pic
12-20-21, 06:04 PM
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Worked so hard that the seat cover got torn off.
I just recovered a saddle today.
how harmonic.
I just recovered a saddle today.
how harmonic.
12-20-21, 07:15 PM
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That was a sacrificial saddle that didn't take too much of a beating. The Hinault Turbo that came with the bike is OK.
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12-20-21, 07:58 PM
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Flutes and cut out sections are just BEGGING to stick a seat post when they aren't north of the seat lug clamp. The old "French Fit" 
You won Classtime, bravo!
You won Classtime, bravo!
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12-20-21, 08:12 PM
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Just a warning to others looking at trying this method, you can damage the frame twisting it. I bent a frame doing a similar method to this, replace lumber with a sturdy workbench and a big vise. Glad it worked here!
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12-21-21, 03:57 PM
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Yeah, I use a big yellow birch out in the woods near my house. There's always a chance of wrecking the frame in the process. But I've been careful enough--or, let's be honest, lucky enough--enough to avoid that outcome so far.
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12-21-21, 04:20 PM
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12-21-21, 06:51 PM
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Funnily enough, we have a logging job going on at our place now. A lot of ash and soft maple has gone out, and some yellow birch. But the particular tree I always use doesn't have a merchantable log in it, so it's off the hook--all it has to do is stay there, make shade, and wait for me to show up with a bike every few years. Nice work if you can get it.
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12-22-21, 10:27 PM
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That would be my invention...! I used 2x6
glad it worked for you. Key is in trying all sorts of penetrating oil, but AlO2 is largely undissolvable I guess. I also place the sacrificial saddle under two boards once cracked to hold the seat as I lift and twist up.
Second key is making sure the plane of the twist is perfectly perpendicular to the seat tube, or you can torque the seattube.
I am 3 for 3 so far with the tool.
glad it worked for you. Key is in trying all sorts of penetrating oil, but AlO2 is largely undissolvable I guess. I also place the sacrificial saddle under two boards once cracked to hold the seat as I lift and twist up.
Second key is making sure the plane of the twist is perfectly perpendicular to the seat tube, or you can torque the seattube.
I am 3 for 3 so far with the tool.
I knew the seatpost was stuck and I bought the bike anyway. After two weeks of PB Blaster, Liquid Wrench, wack’n with a hammer, ammonia, and promising myself to only hacksaw for two hours per day for as many days as it takes—I built this copy of a tool invented by a BF member (can’t find his thread).
Happy Holidays!
Happy Holidays!
__________________
1987 Crest Cannondale, 1987 Basso Gap, 1992 Rossin Performance EL, 1990ish Van Tuyl, 1985 Trek 670, 1982 AD SLE, 2003 Pinarello Surprise, 1990ish MBK Atlantique, 1987 Peugeot Competition, 1987 Nishiki Tri-A, 1981 Faggin, 1996 Cannondale M500, 1984 Mercian, 1982 AD SuperLeicht, 1985 Massi (model unknown), 1988 Daccordi Griffe , 1989 Fauxsin MTB, 1981 Ciocc Mockba, 1992 Bianchi Giro, 1977 Colnago Super
1987 Crest Cannondale, 1987 Basso Gap, 1992 Rossin Performance EL, 1990ish Van Tuyl, 1985 Trek 670, 1982 AD SLE, 2003 Pinarello Surprise, 1990ish MBK Atlantique, 1987 Peugeot Competition, 1987 Nishiki Tri-A, 1981 Faggin, 1996 Cannondale M500, 1984 Mercian, 1982 AD SuperLeicht, 1985 Massi (model unknown), 1988 Daccordi Griffe , 1989 Fauxsin MTB, 1981 Ciocc Mockba, 1992 Bianchi Giro, 1977 Colnago Super
12-23-21, 06:28 AM
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Actually
Actually I was going to purchase a used 85 Torpedo from someone but found a stuck seat post. I declined after pointing that out. The older gentleman bike collector and his son in law worked on it and months later the post was out. A bit of damage from a big wrench. They said they used the Coke in the seat tube. I did wind up purchasing the bike.
12-23-21, 07:35 AM
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Bliliant IMO jdawginsc
My workbench is a heavy mofo and the last time I clamped a seized SP in the vise, twisting the frame moved my bench. (Had to hacksaw that post.)
My workbench is a heavy mofo and the last time I clamped a seized SP in the vise, twisting the frame moved my bench. (Had to hacksaw that post.)
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12-23-21, 07:53 AM
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RJ the bike guy has a number of videos on how to remove a stick seat post, but this brings out my inner Tim Taylor:
Total loss of the seat post, but less dangerous than brute force twisting.
Glad it all worked out for you.
Total loss of the seat post, but less dangerous than brute force twisting.
Glad it all worked out for you.
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12-23-21, 08:54 AM
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RJ the bike guy has a number of videos on how to remove a stick seat post, but this brings out my inner Tim Taylor: https://youtu.be/P-YpmDx86d0
Total loss of the seat post, but less dangerous than brute force twisting.
Glad it all worked out for you.
Total loss of the seat post, but less dangerous than brute force twisting.
Glad it all worked out for you.
__________________
1987 Crest Cannondale, 1987 Basso Gap, 1992 Rossin Performance EL, 1990ish Van Tuyl, 1985 Trek 670, 1982 AD SLE, 2003 Pinarello Surprise, 1990ish MBK Atlantique, 1987 Peugeot Competition, 1987 Nishiki Tri-A, 1981 Faggin, 1996 Cannondale M500, 1984 Mercian, 1982 AD SuperLeicht, 1985 Massi (model unknown), 1988 Daccordi Griffe , 1989 Fauxsin MTB, 1981 Ciocc Mockba, 1992 Bianchi Giro, 1977 Colnago Super
1987 Crest Cannondale, 1987 Basso Gap, 1992 Rossin Performance EL, 1990ish Van Tuyl, 1985 Trek 670, 1982 AD SLE, 2003 Pinarello Surprise, 1990ish MBK Atlantique, 1987 Peugeot Competition, 1987 Nishiki Tri-A, 1981 Faggin, 1996 Cannondale M500, 1984 Mercian, 1982 AD SuperLeicht, 1985 Massi (model unknown), 1988 Daccordi Griffe , 1989 Fauxsin MTB, 1981 Ciocc Mockba, 1992 Bianchi Giro, 1977 Colnago Super
