stuck seatpost... please help

slartibartfast said:

I'm posting this for a freind of mine, heres what he wrote to me:

"Hey, any tricks on getting a fused aluminum seatpost out of a steel frame? I heard that coke
works? Also ammonia? I tried a hydraulic jack, but I almost bent a chainstay..."

sheldonbrown.comstuck seatposts.htmlOpen ↗

Tell him good luck.

I personally got two steel frames with stuck seatposts, not having wanted to start some real
possible destructive measures I just live with it and enjoy the weight saving benefit in not having
to have a seatpost bolt:-)

Kind regards

Bruno

Quoted message said:

I'm posting this for a freind of mine, heres what he wrote to me:

Posting for a friend eh? Yeah, right......... :-)

slartibartfast said:

I'm posting this for a freind of mine, heres what he wrote to me:

"Hey, any tricks on getting a fused aluminum seatpost out of a steel frame? I heard that coke
works? Also ammonia? I tried a hydraulic jack, but I almost bent a chainstay..."

Thanks for any help

Jason

Version 10.3 You must have access to a very large bench vise/vice/vyce. Take off saddle. Get some
WD40 or penetrating stuff of your choice into the area inside the seatpost tube. Either squirt
through the WB bosses or take off the BB. This is not to loosen right now, but to be there when it
cracks. Allow to run down into the inside end of the seatpost Leave half a day with the bike
alternately upside down and laying on side.. Take off the wheels. Invert bike and lock the seat post
in the vise jaws. Grab bike at either end of the frame and twist. This works in 90% of cases due to
the large leverage being used. Smile when you hear that initial click and feel it twist 1 degree.
GREASE SEATPOST before reinserting