removing rusty seat post and stem from an old bike ? ?

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removing rusty seat post and stem from an old bike ? ?

Postby silverlight » Sat Apr 19, 2008 9:11 pm

Hi All
Does anyone have any ideas of how to remove a rusted seat post and stem from a frame, Im sure they have never been moved since the 50's as the frame was found in the shed. Ive tried to budge them but got no movement, i feel i will create damage with force and hence ruining a fine frame.
thanks to all

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Postby mikeg » Sat Apr 19, 2008 10:25 pm

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Postby Kid_Carbine » Sat Apr 19, 2008 10:27 pm

It took time to put it in there, it will take time to get it out.

Make sure that an old saddle is securely fastened to the seat pin.
Spray some WD40 or similar on the pin.
Repeat as aften as you like but give it time to soak into the micro gaps between frame & pin.

Come back in a couple of days.
Remove pinch bolt completely.
Drive suitable wedge in paralell to seat tube to open seat lug slightly between the pinch bolt lugs.
Use small cold chisel or largish screwdriver but be gentle & just ease the pressure from the seatpin.

Grasp seat firmly, apply rotational force. If seat pin moves just a little, then apply a little light oil & wiggle gently. The objective is to get the oil in, not so much as to get the pin out, .... yet.

This might take a couple of days but if the oil gets right down there it will be so much easier when you do give it your all.
When you think it's time, try to rotate the saddle round & round then wind it out.

Good luck
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Postby stryker84 » Sun Apr 20, 2008 1:39 am

Wish mine'd be as easy to remove as describe. Wedged well and truly. Rotating the saddle only rotated the clamp on the pin, which doesn't do anything to pull it out. Even sawing through didn't work. Looks like someone bashed it all the way in past the narrowing of the tube.

Might look at getting a 1" drill bit and drilling it out one day...

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Postby vic » Sun Apr 20, 2008 8:42 pm

Maybe my seat posts haven't been as firmly entrenched as yours, but this has worked for me. (So far)
Remove tube bolt from frame, and wedge open with wide blade screwdriver.
Apply silicon spray several times over course of day.
Make sure seat is bolted onto tube firmly.
Position end of a 12" long piece of 4"x2" under seat against seat post. (Measurements are of course not mandatory)
Press foot firmly downward on bottom of rear rim, or utilize brave volunteer to hold bike down.
Apply almighty upward bang(s) with knockometer (hammer).
Make sure your face is not in line of swinging range.
Sheldon site has the what next instructions if it doesn't budge.

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Postby rustychisel » Mon Apr 21, 2008 4:53 pm

Obviously, I suggest a rustychisel, but what the heck

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Postby sogood » Mon Apr 21, 2008 5:51 pm

If it's really been in there since the 50s... Wow! Good luck! :shock:
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Postby silverlight » Mon Apr 21, 2008 6:25 pm

its 2 bikes that i need to remove the seat post and stem from, (havent even began to think about the bottom bracket but one is from 1954 an english bike and the other is a healing probably around the same period, I will try on the weekend all your suggestions, A friend of mine also suggested welding a steel pipe on it like a T which will make it easier to move around....could work??
thanks to all and will keep youz updated

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Postby Happy Frank » Sat Apr 26, 2008 11:57 am

As a last resort weld a piece of steel to the seat post then clamp it in a vise, and turn the frame rather than trying to turn the post, gives you much more leverage. But still use penetrene, WD40 or whatever for a few days first.


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