Saddle Bmx

how do I remove a stuck seatpost on a BMX bike?

Recently one of my neighbors moved out and his son, threw away his BMX bike. It looked like with a few little repairs, it could become a nice bike once again. So I brought it in, replaced one of the tires because it had a hole in it. One thing that stressed me out was the seatpost. I tried spraying WD-40, Ammonia and even took a propane torch and tried to expand the metal. But nothing worked, I even tried taking those portable jacks that are used for cars, and jacked it up, but only the saddle itself came off. Any ideas on how to take it out then? I want to take it out to put another seatpost/saddle I have. Thanks!

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Don't force it if you can help it... especially with heat. Heat weakens the metal. Get some "Liquid Wrench" penetrating oil. Put it on the post liberally, let it run down inside the seat post and soak. Come back during the day and give her a little more and let it soak overnight. Since the seat is off, take a locking wrench or large crescent wrench and attach it to the head of the seat post. Place a large bladed screwdriver between the ears of the seat bolt clamp (after completely removing the bolt) and force a little openig by twisting the blade. It only takes a little movement to force the opening jsut a bit to break it free. The objective is NOT to pound it up and down, but to twist the seat post to break it loose. You can even attach a long length of pipe to the seat post by putting the end of a length of pipe over the wrench handle. You will get tremendous additional leverage. Try and twist the seat post free. I have never had one not give in after a couple of soakings in Liquid Wrench and the crescent wrench pipe extension trick.... never.

Soccerref

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