Just bought a Yo Eddy steel frame only to discover it and the Thompson post are in love and inseparable ie seized together. Any bright ideas for separation? So far brute force and solvents havent done it
Fat City seatpost/frame seizure
- Thread starter buttychunkster
- Start date
I know one thing that used to work for us was putting the seatpost top clamp in a 'solid' vice and twisting the frame back and forth. You could get more leverage on the frame than on the post.
You may mar up the post a little though.
Sweet frame.
You may mar up the post a little though.
Sweet frame.
Hm. Clamping the post and levering on the frame isn't a bad idea. Of course, if I were to tweak or twist a Yo while doing that, I'd probably start crying.
One option would be some light penetrating oil (liquid wrench, WD-40, etc) soaked into the gap.
Another option would be to soak the whole thing in ammonia. Flip the frame over and fill the seatpost and seat tube through the BB (assuming there's a hole in the BB for draining the seat tube). The ammonia will dissolve any oxidation on the aluminum post.
Ammonia is cheap, so it isn't too crazy to suggest just filling the frame with it. WD-40 isn't so cheap, so a more strategic application might work better.
Good luck
One option would be some light penetrating oil (liquid wrench, WD-40, etc) soaked into the gap.
Another option would be to soak the whole thing in ammonia. Flip the frame over and fill the seatpost and seat tube through the BB (assuming there's a hole in the BB for draining the seat tube). The ammonia will dissolve any oxidation on the aluminum post.
Ammonia is cheap, so it isn't too crazy to suggest just filling the frame with it. WD-40 isn't so cheap, so a more strategic application might work better.
Good luck
Thermo dynamics are a very useful tool in this case. I assume the seat poast is still in one piece. Get your hands on a CO2 fire extinguisher or a buddy with a 20 oz paintball tank and a remote line. Warning this should be done in a well ventilated area. You will need a buddy and a good work stand. Flip the frame up side down in the stand next you need to prepare the CO2 source if you have an extinguisher remove the horn and leave the hose attached. What you want to do is get liquid CO2 in the seat tube through the hole in the BB. With the paintball tank it will be easer to get the liquid in the seat tube. In either case you will have to turn the bottles upside down to get the liquid to flow. Wear gloves when you reach this step but do not do it yet. You will also need a heat source torch or heat gun the latter is preferred you want to heat up the seat poast and seat tube to a temperature the is ho to the touch but not burning the paint. When you get it to that temperature now is the tome for the gloves get that liquid CO2 in the seat tube now give it a good flood with the CO2 you may hear a snap that will be the thermo dynamics working. Two dissimilar metals heat and cool at different temperatures.! Get a wrench ready for the seat post and have your buddy steady the frame give it a heave ho. You should be good to go if not it may need to be reamed out for the galvanic corrosion is too strong. If the latter happens a local machine shop should be able to do the job. If you do go with the machine shop make sure to tell then the final diameter. (IIRC 26.4) safty edit don't forget to wear some safty glasses while preforming these tasks.