Stuck seat post removal service
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Re: Re:
The impression i got was that both frame and post were saved.
Ive had one semi stuck post (carbon in alloy frame) that took a huge amount of effort to remove by twjsting and pulling. The post was marked with zig zag scrated, photos of posts on that web site do not show such marks or parallel scapes that you would get so am puzzled how it is done.
I am thinking some sort of hydraulic method to push the post out?
A jig that clamps round the seat tube to prevent it splitting , a plug that seals the seat post then fluid pumped in via some adapter that screws into the bb?
Even then i am not sure that would work as the post and tube 'weld' themselves into one.
foz":2lingtgw said:
The impression i got was that both frame and post were saved.
Ive had one semi stuck post (carbon in alloy frame) that took a huge amount of effort to remove by twjsting and pulling. The post was marked with zig zag scrated, photos of posts on that web site do not show such marks or parallel scapes that you would get so am puzzled how it is done.
I am thinking some sort of hydraulic method to push the post out?
A jig that clamps round the seat tube to prevent it splitting , a plug that seals the seat post then fluid pumped in via some adapter that screws into the bb?
Even then i am not sure that would work as the post and tube 'weld' themselves into one.
M-Power
Old School Grand Master
Re:
I made my own design tool to do this and it was very effective. Imo most properly jammed alloy posts and maybe carbon ones would be destroyed when they are cut out. I think the price is VERY reasonable considering the effort that can go into it, as its a careful precision job with constant checking to protect the frame, which has to be done by hand. Lots of faffing with an endoscope too to check things over. Sure a special powered attachment could be made but at what cost ?
Also reckon you'd either need some specialist insurance or a contingency fund for those rare occasions when the frame cracks etc etc Cutting the post out should not do this but the trauma of previous attempts by the owner or his LBS could weaken the tubing making it more susceptible to damage.
I made my own design tool to do this and it was very effective. Imo most properly jammed alloy posts and maybe carbon ones would be destroyed when they are cut out. I think the price is VERY reasonable considering the effort that can go into it, as its a careful precision job with constant checking to protect the frame, which has to be done by hand. Lots of faffing with an endoscope too to check things over. Sure a special powered attachment could be made but at what cost ?
Also reckon you'd either need some specialist insurance or a contingency fund for those rare occasions when the frame cracks etc etc Cutting the post out should not do this but the trauma of previous attempts by the owner or his LBS could weaken the tubing making it more susceptible to damage.
Re:
Seeing a couple of posts more or less snapped level with the top tube makes me thing they are not pulled out, plus how would you get a tight grip without matking the post.
Thinking some more about this, my mk 2 version is not hydraulic, as that would have issue with seals but a series of short interlocking inserts, like a single lego brick that are inersterd via the bb. At the base is some kind of screw mechanism that is turned by a spanner and pushes the inserts.... but then is the bond holding the bb to the seat tube going to strong enogh? A hot water jacket around the tube and some liquid co2 poured into the seatpost may hekp trlrase iy.... but not all posts are open ended at the top.
Most baffling.
Ps alvin stardust RIP
Seeing a couple of posts more or less snapped level with the top tube makes me thing they are not pulled out, plus how would you get a tight grip without matking the post.
Thinking some more about this, my mk 2 version is not hydraulic, as that would have issue with seals but a series of short interlocking inserts, like a single lego brick that are inersterd via the bb. At the base is some kind of screw mechanism that is turned by a spanner and pushes the inserts.... but then is the bond holding the bb to the seat tube going to strong enogh? A hot water jacket around the tube and some liquid co2 poured into the seatpost may hekp trlrase iy.... but not all posts are open ended at the top.
Most baffling.
Ps alvin stardust RIP
highlandsflyer
Retro Wizard
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Re:
Having tried all the techniques suggested on all those wacky cycling websites, including monkey juice and poison frog ink, I had nearly given up on getting my diamond encrusted graphene seatpin free from my custom Halfords Apollo frame. “What am I to do?”, I muttered to myself as I flicked through the back of last summer’s Innovations Magazine. There, in the smallest of classified adverts, was my solution! “Stuck Posts Sorted Fast!”, was all it read, with a link to a website. No sooner had I opened the website on my internet machine there was a knock on the door. I opened it to find a man-like figure dressed bizarrely in an oily boilersuit, incongruously sporting a generic superhero mask and cape. The sort you get from Aldi. He had a flatbed truck with what looked like a hundred knackered bike frames on it, most of which had at least a seatpost in. “I am only half a mile up the road”, he cheerfully informed me as he threw my beloved bicycle onto the pile, and his pimply young sidekick tied it down. I was rather concerned, by my fear was allayed as I thought back to all those impressive testimonials I had yet to read on his website. “Should ‘ave ‘er sorted in a couple of hours. Pop by at three to collect mate!”, he shouted back as he gunned the Iveco up the hill, leaving a mass of toxic exhaust fumes hanging in the air. After my usual carrot and coriander soup with oatcakes I set off to find his yard, the sun was shining and I wanted to get out on my bike! I arrived a tad early at the imposing yard, its huge steel gates adorned with a number of painted over company names. Imagine my surprise when I pushed open one of the gates, as I was confronted with the sight of my precious bike slung by rusty chains between a fork lift and a tree! A spotty young lad was giving the forklift beans whilst the man I entrusted my greatest possession to, (a man I now know to be the shark behind “Bottom Brackets Beaten”, “Klein Seat Tube Amendment”, “Manitou Resilience Enhancment”, and a number of other schemes featured on Crimewatch), wailed on my graphene seatpost with a jackhammer whilst emitting the worse series of curse words I have heard since leaving the marine corps! Still, he only charged me fifty quid, and in this day and age that has to be a bargain!
Having tried all the techniques suggested on all those wacky cycling websites, including monkey juice and poison frog ink, I had nearly given up on getting my diamond encrusted graphene seatpin free from my custom Halfords Apollo frame. “What am I to do?”, I muttered to myself as I flicked through the back of last summer’s Innovations Magazine. There, in the smallest of classified adverts, was my solution! “Stuck Posts Sorted Fast!”, was all it read, with a link to a website. No sooner had I opened the website on my internet machine there was a knock on the door. I opened it to find a man-like figure dressed bizarrely in an oily boilersuit, incongruously sporting a generic superhero mask and cape. The sort you get from Aldi. He had a flatbed truck with what looked like a hundred knackered bike frames on it, most of which had at least a seatpost in. “I am only half a mile up the road”, he cheerfully informed me as he threw my beloved bicycle onto the pile, and his pimply young sidekick tied it down. I was rather concerned, by my fear was allayed as I thought back to all those impressive testimonials I had yet to read on his website. “Should ‘ave ‘er sorted in a couple of hours. Pop by at three to collect mate!”, he shouted back as he gunned the Iveco up the hill, leaving a mass of toxic exhaust fumes hanging in the air. After my usual carrot and coriander soup with oatcakes I set off to find his yard, the sun was shining and I wanted to get out on my bike! I arrived a tad early at the imposing yard, its huge steel gates adorned with a number of painted over company names. Imagine my surprise when I pushed open one of the gates, as I was confronted with the sight of my precious bike slung by rusty chains between a fork lift and a tree! A spotty young lad was giving the forklift beans whilst the man I entrusted my greatest possession to, (a man I now know to be the shark behind “Bottom Brackets Beaten”, “Klein Seat Tube Amendment”, “Manitou Resilience Enhancment”, and a number of other schemes featured on Crimewatch), wailed on my graphene seatpost with a jackhammer whilst emitting the worse series of curse words I have heard since leaving the marine corps! Still, he only charged me fifty quid, and in this day and age that has to be a bargain!
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